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mapproject.c
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mapproject.c
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/*--------------------------------------------------------------------
*
* Copyright (c) 1991-2024 by the GMT Team (https://www.generic-mapping-tools.org/team.html)
* See LICENSE.TXT file for copying and redistribution conditions.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3 or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* Contact info: www.generic-mapping-tools.org
*--------------------------------------------------------------------*/
/*
* Brief synopsis: mapproject reads a pair of coordinates [+ optional data fields] from
* standard input or file(s) and transforms the coordinates according to the
* map projection selected. See the man page for projections currently supported.
*
* The default is to expect longitude, latitude, [and optional datavalues],
* and return x, y, [ and optional data values], but if the -I option is used,
* the reverse is true. Specifying -C means that the origin of projected coordinates
* should be set to origin of projection [Default origin is lower left corner of "map"].
* If your data is lat lon instead of lon lat [Default], use -: to toggle x/y -> y/x.
* Note that only unprojected values are affected by the -: switch. True x,y values are
* always printed out as x,y. Option -G allows calculation of distances along track or
* to a fixed point, while -L calculates shortest distances to a line.
* Finally, datum conversions can also be done, alone or in series with a
* map projection.
*
*
* Author: Paul Wessel
* Date: 1-JAN-2010
* Version: 6 API
*
* Note on KEYS: LD(= means -L takes an optional input Dataset as argument which may be followed by optional modifiers.
*/
#include "gmt_dev.h"
#include "longopt/mapproject_inc.h"
#define THIS_MODULE_CLASSIC_NAME "mapproject"
#define THIS_MODULE_MODERN_NAME "mapproject"
#define THIS_MODULE_LIB "core"
#define THIS_MODULE_PURPOSE "Forward and inverse map transformations, datum conversions and geodesy"
#define THIS_MODULE_KEYS "<D{,LD(=,>D},W-("
#define THIS_MODULE_NEEDS ""
#define THIS_MODULE_OPTIONS "-:>JRVbdefghijopqs" GMT_OPT("HMm")
enum GMT_mp_Gcodes { /* Support for -G parsing */
GMT_MP_VAR_POINT = 1, /* Compute distances from points given along a track */
GMT_MP_FIXED_POINT = 2, /* Compute distances from data to fixed point given by -Gx0/y0[...] */
GMT_MP_PAIR_DIST = 4, /* Compute distances from data to paired point given in data columns 3&4 */
GMT_MP_CUMUL_DIST = 8, /* Compute cumulative distances along track given by input data */
GMT_MP_INCR_DIST = 16 /* Compute incremental distances along track given by input data */
};
enum GMT_mp_Lcodes { /* Support for -L parsing */
GMT_MP_GIVE_CORD = 2, /* Return the coordinates of the nearest point on the line */
GMT_MP_GIVE_FRAC = 3 /* Return the fractional line/point number of the nearest point on the line */
};
enum GMT_mp_Wcodes { /* Support for -W parsing */
GMT_MP_M_WH = 0, /* Return width and height */
GMT_MP_M_WIDTH = 1, /* Return width */
GMT_MP_M_HEIGHT = 2, /* Return height */
GMT_MP_M_POINT = 3, /* Return user coordinates of point given in plot coordinates */
GMT_MP_M_REGION = 4, /* Return rectangular w/e/s/n for oblique -R -J setting */
GMT_MP_M_RSTRING = 5, /* As 4, but return string -Rw/e/s/n */
GMT_MP_M_OREGION = 6, /* Converts -R<xmin/xmax/ymin/ymax>+u<unit> to <llx/lly/urx/ury> returned as llx urx lly ury */
GMT_MP_M_OSTRING = 7, /* As 6, but return string -Rw/e/s/n */
GMT_MP_M_EREGION = 8, /* Converts -R<xmin/xmax/ymin/ymax>+u<unit> to <llx/lly/urx/ury> returned as llx urx lly ury */
GMT_MP_M_ESTRING = 9, /* As 6, but return string -Rw/e/s/n */
GMT_MP_M_MREGION = 10, /* As 6, but return string -Rxmin/xmax/ymn/ymax */
GMT_MP_M_MSTRING = 11, /* As 6 but as string */
GMT_MP_M_BREGION = 12, /* Return xmin/xmax/ymn/ymax in long/lat of boundingbox */
GMT_MP_M_BSTRING = 13 /* As 12 but as string */
};
enum GMT_mp_Zcodes { /* Support for -Z parsing */
GMT_MP_Z_DELT = 1, /* Return delta t */
GMT_MP_Z_CUMT = 2, /* Return elapsed t */
GMT_MP_Z_ABST = 4, /* Return absolute t given epoch */
GMT_MP_Z_SPEED = 8 /* Must get speed from input column */
};
enum GMT_mp_cols { /* Index into the extra and ecol_type arrays */
MP_COL_AZ = 0, /* Azimuth between to points */
MP_COL_DS, /* Distance between to points */
MP_COL_CS, /* Cumulative distance since start of segment */
MP_COL_XN, /* Longitude (or x) of nearest point in -L check */
MP_COL_YN, /* Latitude (or y) of nearest point in -L check */
MP_COL_DT, /* Incremental time between two points */
MP_COL_CT, /* Cumulative time since start of segment */
MP_COL_AT, /* Absolute time at present record */
MP_COL_N /* How many extra items there are to choose from */
};
#define GMT_MP_NNODES 100 /* Default number of points on one polygon side in -We|r+n */
struct MAPPROJECT_CTRL { /* All control options for this program (except common args) */
/* active is true if the option has been activated */
bool used[8]; /* Used to keep track of which items are used by -A,G,L,Z */
struct SAMPLE1D_Out { /* -> */
bool active;
char *file;
} Out;
struct MAPPROJECT_A { /* -Ab|B|f|Fb|B|o|O<lon0>/<lat0> */
bool active;
bool azims;
bool orient; /* true if we want orientations, not azimuths */
bool reverse; /* true if we want back-azimuths instead of regular azimuths */
bool geodesic; /* true if we want geodesic azimuths [Default is great circle azimuths] */
unsigned int mode;
double lon, lat; /* Fixed point of reference */
} A;
struct MAPPROJECT_C { /* -C[<false_easting>/<false_northing>][+m] */
bool active;
bool shift;
bool m_origin; /* True if we want projected Mercator y-values relative to standard latitude [Equator] */
double easting, northing; /* Shifts */
} C;
struct MAPPROJECT_D { /* -D<c|i|p> */
bool active;
char unit;
} D;
struct MAPPROJECT_E { /* -E[<datum>] */
bool active;
struct GMT_DATUM datum; /* Contains a, f, xyz[3] */
} E;
struct MAPPROJECT_F { /* -F[k|m|n|i|c|p] */
bool active;
char unit;
} F;
struct MAPPROJECT_G { /* -G<lon0>/<lat0>[+a][+i][+u[+|-]d|e|f|k|m|M|n|s|c|C][+v] */
bool active;
unsigned int mode; /* 1 = distance to fixed point, 2 = cumulative distances, 3 = incremental distances, 4 = 2nd point in cols 3/4 */
unsigned int sph; /* 0 = Flat Earth, 1 = spherical [Default], 2 = ellipsoidal */
double lon, lat; /* Fixed point of reference */
char unit;
} G;
struct MAPPROJECT_I { /* -I */
bool active;
} I;
struct MAPPROJECT_L { /* -L<line.xy>[/<d|e|f|k|m|M|n|s|c|C>] */
bool active;
unsigned int mode; /* 0 = dist to nearest point, 1 = also get the point, 2 = instead get seg#, pt# */
unsigned int sph; /* 0 = Flat Earth, 1 = spherical [Default], 2 = ellipsoidal */
char *file; /* Name of file with lines */
char unit;
} L;
struct MAPPROJECT_N { /* -N */
bool active;
unsigned int mode;
} N;
struct MAPPROJECT_Q { /* -Q[e|d] */
bool active;
unsigned int mode; /* 1 = print =Qe, 2 print -Qd, 3 print both */
} Q;
struct MAPPROJECT_S { /* -S */
bool active;
} S;
struct MAPPROJECT_T { /* -T[h]<from>[/<to>] */
bool active;
bool heights; /* True if we have heights */
struct GMT_DATUM from; /* Contains a, f, xyz[3] */
struct GMT_DATUM to; /* Contains a, f, xyz[3] */
} T;
struct MAPPROJECT_W { /* -W[e|E|g<lon/lat>|h|j<code>|n<rx/ry>|o|O|r|R|w|x<x/y>[+n<nx/ny>] */
bool active;
bool poly;
unsigned int mode; /* See GMT_mp_Wcodes above */
unsigned int nx, ny;
struct GMT_REFPOINT *refpoint;
} W;
struct MAPPROJECT_Z { /* -Z[<speed>][+c][+f][+i][+t<epoch>] */
bool active;
bool formatted; /* Format duration per ISO 8601 specification */
unsigned int mode; /* 1 = incremental time, 2 absolute time since epoch, 3 = both */
double speed; /* Fixed speed in distance units per TIME_UNIT [m/s] */
double epoch; /* Start absolute time for increments */
} Z;
};
static void *New_Ctrl (struct GMT_CTRL *GMT) { /* Allocate and initialize a new control structure */
struct MAPPROJECT_CTRL *C;
C = gmt_M_memory (GMT, NULL, 1, struct MAPPROJECT_CTRL);
/* Initialize values whose defaults are not 0/false/NULL */
C->F.unit = 'e'; /* Default projected unit is meter */
C->G.unit = GMT_MAP_DIST_UNIT; /* Default unit is meter */
C->G.sph = GMT_GREATCIRCLE; /* Default is great-circle distances */
C->L.mode = GMT_MP_GIVE_CORD; /* Default returns coordinates of nearest point */
C->L.unit = GMT_MAP_DIST_UNIT; /* Default unit is meter */
C->L.sph = GMT_GREATCIRCLE; /* Default is great-circle distances */
C->N.mode = GMT_LATSWAP_G2O; /* Default is geodetic<->geocentric, if -N is used */
return (C);
}
static void Free_Ctrl (struct GMT_CTRL *GMT, struct MAPPROJECT_CTRL *C) { /* Deallocate control structure */
if (!C) return;
gmt_M_str_free (C->Out.file);
gmt_M_str_free (C->L.file);
gmt_M_free (GMT, C);
}
static int usage (struct GMTAPI_CTRL *API, int level) {
const char *name = gmt_show_name_and_purpose (API, THIS_MODULE_LIB, THIS_MODULE_CLASSIC_NAME, THIS_MODULE_PURPOSE);
if (level == GMT_MODULE_PURPOSE) return (GMT_NOERROR);
GMT_Usage (API, 0, "usage: %s <table> [-Ab|B|f|F|o|O[<lon0>/<lat0>][+v]] [-C[<dx></dy>][+m]] [-D%s] "
"[-E[<datum>]] [-F[<%s|%s>]] [-G[<lon0>/<lat0>][+a][+i][+u<unit>][+v]] [-I] [%s] [-L<table>[+p][+u<unit>]] "
"[-N[a|c|g|m]] [-Q[d|e]] [%s] [-S] [-T[h]<from>[/<to>]] [%s] [-W[b|B|e|E|g|h|j|m|M|n|o|O|r|R|w|x]][+n[<nx>[/<ny>]]] [-Z[<speed>][+a][+i][+f][+t<epoch>]] "
"[%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s] [%s]\n",
name, GMT_DIM_UNITS_DISPLAY, GMT_LEN_UNITS2_DISPLAY, GMT_DIM_UNITS_DISPLAY, GMT_J_OPT, GMT_Rgeo_OPT, GMT_V_OPT,
GMT_b_OPT, GMT_d_OPT, GMT_e_OPT, GMT_f_OPT, GMT_g_OPT, GMT_h_OPT, GMT_i_OPT, GMT_j_OPT, GMT_o_OPT, GMT_p_OPT,
GMT_q_OPT, GMT_s_OPT, GMT_colon_OPT, GMT_PAR_OPT);
if (level == GMT_SYNOPSIS) return (GMT_MODULE_SYNOPSIS);
GMT_Usage (API, -2, "Note: On output, selected items will be pasted at the end of the input record. "
"For optional items the order is alphabetical: -A before -G before -L before -Z, if any of these options are used.");
GMT_Message (API, GMT_TIME_NONE, "\n REQUIRED ARGUMENTS:\n");
GMT_Option (API, "<");
GMT_Message (API, GMT_TIME_NONE, "\n OPTIONAL ARGUMENTS:\n");
GMT_Usage (API, 1, "\n-Ab|B|f|F|o|O[<lon0>/<lat0>][+v]");
GMT_Usage (API, -2, "Calculate azimuths from previous point in the input data with -Af. If <lon0>/<lat0> "
"is provided, then all azimuths are computed with respect to that point. Select directive:");
GMT_Usage (API, 3, "b: Calculate back-azimuths from data to previous or the specified point on the sphere.");
GMT_Usage (API, 3, "B: Calculate back-azimuths from data to previous or the specified point on the ellipsoid.");
GMT_Usage (API, 3, "f: Calculate azimuths from data to previous or the specified point on the sphere.");
GMT_Usage (API, 3, "F: Calculate back-azimuths from data to previous or the specified point on the ellipsoid.");
GMT_Usage (API, 3, "o: Calculate orientations (-90/90) instead of azimuths (0/360) on the sphere.");
GMT_Usage (API, 3, "O: Calculate orientations (-90/90) instead of azimuths (0/360) on the ellipsoid.");
GMT_Usage (API, -2, "Append +v to obtain variable <lon0> <lat0> points from input columns 3-4 instead. "
"If -R -J are given then we compute Cartesian angles after projecting the coordinates.");
GMT_Usage (API, 1, "\n-C[<dx></dy>][+m]");
GMT_Usage (API, -2, "Get projected coordinates relative to projection center [Default is relative to lower left corner]. "
"Optionally append <dx></dy> to add (or subtract if -I) (i.e., false easting and northing) [0/0]. "
"Units are plot units unless -F is set, in which case the unit is meters. "
"Mercator only: Append +m to set origin for projected y-values to the standard parallel [Equator].");
GMT_Usage (API, 1, "\n-D%s", GMT_DIM_UNITS_DISPLAY);
GMT_Usage (API, -2, "Temporarily reset PROJ_LENGTH_UNIT to be c (cm), i (inch), or p (point). "
"Cannot be used if -F is set.");
GMT_Usage (API, 1, "\n-E[<datum>]");
GMT_Usage (API, -2, "Convert (lon, lat, h) to Earth Centered Earth Fixed (ECEF) coordinates [-I for inverse]. "
"Specify <datum> using datum ID (see -Qd or man page) or as <ellipsoid>:<dx,dy,dz>, "
"where <ellipsoid> may be ellipsoid ID (see -Qe or man page) or <semimajor>[,<inv_flattening>]. "
"If <datum> equals - or is not given then we assume WGS-84.");
GMT_Usage (API, 1, "\n-F[%s|%s]", GMT_LEN_UNITS2_DISPLAY, GMT_DIM_UNITS_DISPLAY);
GMT_Usage (API, -2, "Force projected values to be in actual distances [Default uses the given plot scale]. "
"Specify unit by appending e (meter), f (foot) k (km), M (mile), n (nautical mile), u (survey foot), "
"i (inch), c (cm), or p (points) [e].");
GMT_Usage (API, 1, "\n-G[<lon0>/<lat0>][+a][+i][+u<unit>][+v]");
GMT_Usage (API, -2, "Calculate distances to <lon0>/<lat0> OR cumulative or incremental distances along track if fixed point not given. "
"Spherical calculation method is determined by -j [Default is great-circle calculations]. Modifiers controls the result:");
GMT_Usage (API, 3, "+a Get accumulated distances along track [Default mode if <lon0>/<lat0> is not given].");
GMT_Usage (API, 3, "+i Get incremental distance [Default mode if <lon0>/<lat0> given]. "
"Note: Both +a and +i may be specified.");
GMT_Usage (API, 3, "+u Append unit as arc (d)egree, m(e)ter, (f)oot, (k)m, arc (m)inute, (M)ile, "
"(n)autical mile, s(u)rvey foot, arc (s)econd, or (c)artesian [e]. "
"Unit C means Cartesian distances in %s after projecting the input coordinates to plot coordinates (requires -R, -J). "
"Use --PROJ_LENGTH_UNIT=<unit> to change the projected units to one of %s.", API->GMT->session.unit_name[API->GMT->current.setting.proj_length_unit], GMT_DIM_UNITS_DISPLAY);
GMT_Usage (API, 3, "+v Get distance increments via variable <lon0> <lat0> points read from input columns 3-4.");
GMT_Usage (API, 1, "\n-I Inverse mode, i.e., get lon/lat from x/y input. [Default is lon/lat -> x/y].");
GMT_Option (API, "J");
GMT_Usage (API, 1, "\n-L<table>[+p][+u<unit>]");
GMT_Usage (API, -2, "Calculate minimum distances to specified line(s) in the file <table>. "
"Note: Spherical calculations; cannot be combined with -je. Optional modifiers:");
GMT_Usage (API, 3, "+p Output line segment id and fractional point number of closest point on the line "
"[Default outputs min_dist, lon, lat of the closest point on the line].");
GMT_Usage (API, 3, "+u Set <unit> as arc (d)egree, m(e)ter, (f)oot, (k)m, arc (m)inute, (M)ile, (n)autical mile, "
"s(u)rvey foot, arc (s)econd, or (c)artesian [e]. "
"Unit C means Cartesian distances after first projecting the input coordinates (requires -R, -J).");
GMT_Usage (API, 1, "\n-N[a|c|g|m]");
GMT_Usage (API, -2, "Convert from geodetic to auxiliary latitudes; use -I for inverse conversion. Optionally, append a conversion code:");
GMT_Usage (API, 3, "a: Authalic.");
GMT_Usage (API, 3, "c: Conformal.");
GMT_Usage (API, 3, "g: Geocentric [Default].");
GMT_Usage (API, 3, "m: Meridional.");
GMT_Usage (API, 1, "\n-Q[d|e]");
GMT_Usage (API, -2, "List all projection parameters and stop. Optionally, select a subset:");
GMT_Usage (API, 3, "d: Show datum parameters only.");
GMT_Usage (API, 3, "e: Show ellipsoid parameters only.");
GMT_Option (API, "R");
GMT_Usage (API, 1, "\n-S Suppress points outside region.");
GMT_Usage (API, 1, "\n-T[h]<from>[/<to>]");
GMT_Usage (API, -2, "Perform coordinate transformation from datum <from> to datum <to>. "
"Prepend h if input data are lon, lat, height [Default sets height = 0]. "
"Specify datums using datum ID (see -Qd or documentation) or as <ellipsoid>:<dx>,<dy>,<dz>, "
"where <ellipsoid> may be ellipsoid ID (see -Qe or documentation) or <semimajor>[,<inv_flattening>]. "
"If <from> equals - we use WGS-84. If /<to> is not given we assume WGS-84. "
"Note: -T can be used as pre- or post- (-I) processing for -J -R.");
GMT_Option (API, "V");
GMT_Usage (API, 1, "\n-W[b|B|e|E|g|h|j|m|M|n|o|O|r|R|w|x][+n[<nx>[/<ny>]]]");
GMT_Usage (API, -2, "Print map width and/or height or a reference point. No input files are read. Select optional directive:");
GMT_Usage (API, 3, "b: Print bounding box lon/lat for an oblique -R -J selection.");
GMT_Usage (API, 3, "B: Same as b but prints -Rw/e/s/n string as trailing text instead.");
GMT_Usage (API, 3, "e: Print oblique <llx>/<lly>/<urx>/<ury>+r coordinates for rectangular region encompassing the -R -J area.");
GMT_Usage (API, 3, "E: Same as e but prints -Rw/s/e/n+r string as trailing text instead.");
GMT_Usage (API, 3, "g: Print map coordinates of reference point <gx/gy>.");
GMT_Usage (API, 3, "h: Print map height (See -D for plot units).");
GMT_Usage (API, 3, "j: Print map coordinates of justification point given as 2-char justification code (BL, MC, etc.).");
GMT_Usage (API, 3, "m: Print <xmin>/<xmax>/<ymin>/<ymax> projected coordinates for rectangular region encompassing the -R -J area.");
GMT_Usage (API, 3, "M: Same as m but prints -R<xmin>/<xmax>/<ymin>/<ymax> string as trailing text instead.");
GMT_Usage (API, 3, "n: Print map coordinates of reference point with normalized coordinates <rx/ry> in 0-1 range.");
GMT_Usage (API, 3, "o: Print oblique <llx>/<lly>/<urx>/<ury>+r coordinates and -R string for an oblique input region given via <xmin/xmax/ymin/ymax>+u<unit>.");
GMT_Usage (API, 3, "O: Same as o but prints -Rw/e/s/n string as trailing text instead.");
GMT_Usage (API, 3, "r: Print rectangular region for an oblique -R -J selection.");
GMT_Usage (API, 3, "R: Same as r but prints -Rw/e/s/n string as trailing text instead.");
GMT_Usage (API, 3, "w: Print map width (See -D for plot units).");
GMT_Usage (API, 3, "x: Print map coordinates of reference point given in plot coordinates <px/py>.");
GMT_Usage (API, -2, "Note: For -We|r you can use +n[<nx>[/<ny>]] to output the enclosing polygon instead "
"by giving the number of nodes along the two sides [100]. Default (-W with no args) prints map width and map height.");
GMT_Usage (API, 1, "\n-Z[<speed>][+a][+i][+f][+t<epoch>]");
GMT_Usage (API, -2, "Compute travel times along track using specified speed. "
"Note: Requires -G for setting distance calculations. "
"Append <speed> in distance units per TIME_UNIT [m/s]. If <speed> is not "
"given then we read it from input column 3 (5 if -G...+v is set). Optional modifiers:");
GMT_Usage (API, 3, "+a Get accumulated (elapsed) time along track [Default].");
GMT_Usage (API, 3, "+i Get time increments along track.");
GMT_Usage (API, 3, "+f Format the elapsed time using the ISO 8601 convention. "
"The FORMAT_CLOCK_OUT setting is used to determine the ss.xxx format.");
GMT_Usage (API, 3, "+t Set epoch to get absolute time along track.");
GMT_Option (API, "bi2,bo,d,e,f,g,h,i,j,o,p,q,s,:,.");
return (GMT_MODULE_USAGE);
}
GMT_LOCAL char mapproject_set_unit_and_mode (struct GMTAPI_CTRL *API, char *arg, unsigned int *mode) {
unsigned int k = 0;
*mode = GMT_GREATCIRCLE; /* Default is great circle distances */
if (strchr ("-+", arg[0])) {
if (gmt_M_compat_check (API->GMT, 6))
GMT_Report (API, GMT_MSG_COMPAT, "Leading -|+ with unit to set flat Earth or ellipsoidal mode is deprecated; use -j<mode> instead\n");
else {
GMT_Report (API, GMT_MSG_ERROR, "Signed unit is not allowed - ignored\n");
return arg[1];
}
}
/* Fall through here if in compatibility mode */
switch (arg[0]) {
case '-': *mode = GMT_FLATEARTH; k = 1; break;
case '+': *mode = GMT_GEODESIC; k = 1; break;
case '*': *mode = GMT_GEODESIC; k = 1; break;
}
return (arg[k]);
}
GMT_LOCAL unsigned int mapproject_old_L_parser (struct GMTAPI_CTRL *API, char *arg, struct MAPPROJECT_CTRL *Ctrl) {
/* [-L<table>[/[+|-]<unit>]][+] Note that [+|-] is now deprecated in GMT 6 (use -j instead) */
int k, slash;
gmt_M_unused(API);
if (!gmt_M_compat_check (API->GMT, 5)) { /* Sorry */
GMT_Report (API, GMT_MSG_ERROR, "Option -L: Expects -L<table>[+u<unit>][+p]\n");
return 1;
}
Ctrl->L.file = strdup (arg);
k = (int)strlen (Ctrl->L.file) - 1; /* Index of last character */
if (Ctrl->L.file[k] == '+') { /* Flag to get point number instead of coordinates at nearest point on line */
Ctrl->L.mode = GMT_MP_GIVE_FRAC;
Ctrl->L.file[k] = '\0'; /* Chop off the trailing plus sign */
k--; /* Now points to unit */
}
for (slash = k; slash && Ctrl->L.file[slash] != '/'; slash--); /* Find location of optional slash */
if (slash && ((k - slash) < 3)) { /* User appended /[+|-]<unit>[+]. (k-slash) should be either 1 or 2 unless we are confused by files with subdirs */
Ctrl->L.unit = Ctrl->L.file[k];
k--; /* Now points to either / or the optional -/+ mode setting */
Ctrl->L.sph = GMT_GREATCIRCLE; /* Great circle distances */
if (k > 0 && (Ctrl->L.file[k] == '-' || Ctrl->L.file[k] == '+')) {
if (gmt_M_compat_check (API->GMT, 6)) {
GMT_Report (API, GMT_MSG_COMPAT, "Leading -|+ with unit to set flat Earth or ellipsoidal mode is deprecated; use -j<mode> instead\n");
Ctrl->L.sph = (Ctrl->L.file[k] == '-') ? GMT_FLATEARTH : GMT_GEODESIC; /* Gave [-|+]unit */
}
else {
GMT_Report (API, GMT_MSG_ERROR, "Signed unit is not allowed\n");
return 1;
}
}
Ctrl->L.file[slash] = '\0';
}
return 0;
}
GMT_LOCAL bool mapproject_is_old_G_syntax (struct GMT_CTRL *GMT, char *arg) {
/* Return true if we find: -G[<lon0/lat0>/][[+|-]unit][+|-]
* Return false if we find: -G[<lon0/lat0>][+i][+a][+u<unit>][+v] */
size_t len = strlen (arg);
unsigned int n_slashes;
if (len == 0) return false; /* Might as well parse as modern syntax */
/* If any of the modern modifiers +a|i|u|v given then it is the new way */
if (gmt_found_modifier (GMT, arg, "aiuv")) return false;
/* If no point given and we just get -G<unit> then it is the old way */
if (strchr (GMT_LEN_UNITS, arg[0])) return true;
/* Check if we have a leading + before a valid unit: This is the old way of saying ellipsoidal distances in that unit */
if (gmt_found_modifier (GMT, arg, GMT_LEN_UNITS)) return true;
/* Check if we have a leading - before a valid unit: This is the old way of saying flat earth distances in that unit */
if (strstr (arg, "-d") || strstr (arg, "-m") || strstr (arg, "-s") || strstr (arg, "-e") || strstr (arg, "-f") || strstr (arg, "-k") || \
strstr (arg, "-M") || strstr (arg, "-n") || strstr (arg, "-u")) return true;
if (arg[0] == '/') return true; /* Don't this this was ever correct but the old usage said so */
if (strchr ("-+", arg[len-1])) return true; /* If last char is - or + it means the old way of saying incremental vs accumulated distances */
n_slashes = gmt_count_char (GMT, arg, '/'); /* Count slashes */
if (n_slashes == 3) return true; /* Leading point plus more stuff is the old way */
return false;
}
GMT_LOCAL unsigned int mapproject_old_G_parser (struct GMT_CTRL *GMT, char *arg, struct MAPPROJECT_CTRL *Ctrl) {
/* The [-|=] way to select spherical distance calculation mode is now deprecated in GMT 6 */
int n;
unsigned int n_slash, k, n_errors = 0;
char txt_a[GMT_LEN256] = {""}, txt_b[GMT_LEN256] = {""};
char d, sign;
size_t last;
for (n_slash = k = 0; arg[k]; k++) if (arg[k] == '/') n_slash++;
last = strlen (arg) - 1;
Ctrl->G.mode = GMT_MP_VAR_POINT; /* May get overwritten below */
if (n_slash == 2 || n_slash == 1) { /* Got -G<lon0/lat0>[/[+|-]unit] */
Ctrl->G.mode = GMT_MP_FIXED_POINT;
n = sscanf (arg, "%[^/]/%[^/]/%c%c", txt_a, txt_b, &sign, &d);
if (n_slash == 2) { /* Got -G<lon0/lat0>/[+|-]unit */
if (strchr ("-+", sign)) {
if (gmt_M_compat_check (GMT, 6)) {
GMT_Report (GMT->parent, GMT_MSG_COMPAT, "Leading -|+ with unit to set flat Earth or ellipsoidal mode is deprecated; use -j<mode> instead\n");
Ctrl->G.sph = (sign == '-') ? GMT_FLATEARTH : ((sign == '+') ? GMT_GEODESIC : GMT_GREATCIRCLE); /* If sign is not +|- then it was not given */
Ctrl->G.unit = d; /* With sign the unit is the 4th item read by sscanf */
}
else {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Signed unit is not allowed\n");
n_errors++;
}
}
else { /* No leading sign */
Ctrl->G.sph = GMT_GREATCIRCLE;
Ctrl->G.unit = sign; /* If no sign the unit is the 3rd item read by sscanf */
}
n_errors += gmt_M_check_condition (GMT, !strchr (GMT_LEN_UNITS "cC", (int)Ctrl->G.unit),
"Deprecated syntax expected -G<lon0>/<lat0>[/[-|+]%s|c|C]\n", GMT_LEN_UNITS_DISPLAY);
}
if (Ctrl->G.unit == 'c') gmt_set_cartesian (GMT, GMT_IN); /* Cartesian */
n_errors += gmt_M_check_condition (GMT, n < 2, "Expected deprecated syntax -G<lon0>/<lat0>[/[-|+]%s|c|C]\n",
GMT_LEN_UNITS_DISPLAY);
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_X),
gmt_scanf_arg (GMT, txt_a, gmt_M_type (GMT, GMT_IN, GMT_X), false,
&Ctrl->G.lon), txt_a);
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_Y),
gmt_scanf_arg (GMT, txt_b, gmt_M_type (GMT, GMT_IN, GMT_Y), false,
&Ctrl->G.lat), txt_b);
Ctrl->G.mode |= ((arg[last] == '-') ? GMT_MP_INCR_DIST : GMT_MP_CUMUL_DIST);
}
else if (arg[last] == '+') { /* Got -G[[+|-]units]+ */
Ctrl->G.mode = GMT_MP_PAIR_DIST | GMT_MP_INCR_DIST;
Ctrl->G.unit = mapproject_set_unit_and_mode (GMT->parent, arg, &Ctrl->G.sph); /* Unit specification */
}
else if (arg[last] == '-') { /* Got -G[[+|-]units]- */
Ctrl->G.mode |= GMT_MP_INCR_DIST;
Ctrl->G.unit = mapproject_set_unit_and_mode (GMT->parent, arg, &Ctrl->G.sph); /* Unit specification */
}
else { /* Got -G[[+|-]units] only */
Ctrl->G.mode |= GMT_MP_CUMUL_DIST;
Ctrl->G.unit = mapproject_set_unit_and_mode (GMT->parent, arg, &Ctrl->G.sph); /* Unit specification */
}
if (Ctrl->G.unit == 'c') Ctrl->G.unit = 'X'; /* Internally, this is Cartesian data and distances */
if (Ctrl->G.mode == GMT_MP_VAR_POINT) Ctrl->G.mode |= GMT_MP_CUMUL_DIST; /* Default */
return (n_errors);
}
static int parse (struct GMT_CTRL *GMT, struct MAPPROJECT_CTRL *Ctrl, struct GMT_OPTION *options) {
/* This parses the options provided to mapproject and sets parameters in CTRL.
* Any GMT common options will override values set previously by other commands.
* It also replaces any file names specified as input or output with the data ID
* returned when registering these sources/destinations with the API.
*/
unsigned int n_slash, k, n_errors = 0, pos;
int n;
bool geodetic_calc = false, will_need_RJ = false, isoldL = false, no_JR_needed;
char txt_a[GMT_LEN256] = {""}, txt_b[GMT_LEN256] = {""}, from[GMT_LEN256] = {""}, to[GMT_LEN256] = {""};
char c, *p = NULL, *q = NULL;
struct GMT_OPTION *opt = NULL;
struct GMTAPI_CTRL *API = GMT->parent;
for (opt = options; opt; opt = opt->next) {
switch (opt->option) {
case '<': /* Skip input files */
if (GMT_Get_FilePath (API, GMT_IS_DATASET, GMT_IN, GMT_FILE_REMOTE, &(opt->arg))) n_errors++;
break;
case '>': /* Got named output file */
n_errors += gmt_M_repeated_module_option (API, Ctrl->Out.active);
n_errors += gmt_get_required_file (GMT, opt->arg, opt->option, 0, GMT_IS_DATASET, GMT_OUT, GMT_FILE_LOCAL, &(Ctrl->Out.file));
break;
/* Processes program-specific parameters */
case 'A':
n_errors += gmt_M_repeated_module_option (API, Ctrl->A.active);
if ((p = strstr(opt->arg, "+v"))) { /* Expect two pairs of coordinates per line for azim calculations */
Ctrl->A.mode = GMT_MP_PAIR_DIST;
p[0] = '\0'; /* Chop off the +v string */
}
n = sscanf (opt->arg, "%c%[^/]/%s", &c, txt_a, txt_b);
if (n < 1) {
GMT_Report (API, GMT_MSG_ERROR, "Option -A: Expected -Ab|B|f|F|o|O[<lon0>/<lat0>][+v]\n");
n_errors++;
}
else {
switch (c) {
case 'B':
Ctrl->A.geodesic = true;
/* Intentionally fall through - to 'b' */
case 'b':
Ctrl->A.reverse = true;
break;
case 'F':
Ctrl->A.geodesic = true;
/* Intentionally fall through - to 'f' */
case 'f':
break;
case 'O':
Ctrl->A.geodesic = true;
/* Intentionally fall through - to 'o' */
case 'o':
Ctrl->A.orient = true;
break;
default:
GMT_Report (API, GMT_MSG_ERROR, "Option -A: Expected -Ab|B|f|F|o|O[<lon0>/<lat0>][+v]\n");
n_errors++;
break;
}
if (n == 3) {
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_X),
gmt_scanf_arg (GMT, txt_a, gmt_M_type (GMT, GMT_IN, GMT_X), false,
&Ctrl->A.lon), txt_a);
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_Y),
gmt_scanf_arg (GMT, txt_b, gmt_M_type (GMT, GMT_IN, GMT_Y), false,
&Ctrl->A.lat), txt_b);
}
else
Ctrl->A.azims = true;
Ctrl->used[MP_COL_AZ] = true; /* This will include this in the output */
}
if (p) p[0] = '+'; /* Restore the +v string */
break;
case 'C':
n_errors += gmt_M_repeated_module_option (API, Ctrl->C.active);
if (opt->arg[0] && (p = strstr (opt->arg, "+m"))) { /* Gave +m for reset relative offsets to Mercator origin */
Ctrl->C.m_origin = true;
p[0] = '\0'; /* Temporarily chop off modifier */
}
if (opt->arg[0]) { /* Also gave shifts */
n_errors += gmt_M_check_condition (GMT, sscanf (opt->arg, "%lf/%lf", &Ctrl->C.easting, &Ctrl->C.northing) != 2,
"Option -C: Expected -C[<false_easting>/<false_northing>]\n");
if (!(gmt_M_is_zero (Ctrl->C.easting) && gmt_M_is_zero (Ctrl->C.northing))) /* Only shift if both is nonzero */
Ctrl->C.shift = true;
}
will_need_RJ = true; /* Since -C is used with projections only */
if (p) p[0] = '+'; /* Restore modifier */
break;
case 'D':
n_errors += gmt_M_repeated_module_option (API, Ctrl->D.active);
n_errors += gmt_get_required_char (GMT, opt->arg, opt->option, 0, &Ctrl->D.unit);
break;
case 'E':
n_errors += gmt_M_repeated_module_option (API, Ctrl->E.active);
if (gmt_set_datum (GMT, opt->arg, &Ctrl->E.datum) == -1) n_errors++;
break;
case 'F':
n_errors += gmt_M_repeated_module_option (API, Ctrl->F.active);
if (opt->arg[0]) Ctrl->F.unit = opt->arg[0];
will_need_RJ = true; /* Since -F is used with projections only */
break;
case 'G': /* Syntax. Old: -G[<lon0/lat0>][/[+|-]unit][+|-] New: -G[<lon0/lat0>][+i][+a][+u<unit>][+v] */
n_errors += gmt_M_repeated_module_option (API, Ctrl->G.active);
if (mapproject_is_old_G_syntax (GMT, opt->arg))
n_errors += mapproject_old_G_parser (GMT, opt->arg, Ctrl); /* -G[<lon0/lat0>][/[+|-]unit][+|-] */
else { /* -G[<lon0/lat0>][+i][+a][+u<unit>][+v] */
/* Note [+|-] is now deprecated in GMT 6; use -je|f instead */
/* Watch out for +u+<unit> where the + in front of unit indicates ellipsoidal calculations. This unfortunate syntax
* is easily seen as another modifier, e.g., +e, which will fail. We temporarily replace that + sign by the * sign
* to avoid parsing problems. */
n_slash = gmt_count_char (GMT, opt->arg, '/');
if ((q = strstr (opt->arg, "+u")) && q[2] == '+') q[2] = '*'; /* Hide the deprecated leading +for ellipsoidal to avoid bad modifier parsing */
if (gmt_validate_modifiers (GMT, opt->arg, 'G', "aiuv", GMT_MSG_ERROR)) n_errors++;
if ((p = gmt_first_modifier (GMT, opt->arg, "aiuv")) == NULL && n_slash == 0) { /* If just -G given then we get here; default to cumulate distances in meters */
Ctrl->G.mode |= GMT_MP_VAR_POINT;
Ctrl->G.mode |= GMT_MP_CUMUL_DIST;
Ctrl->used[MP_COL_DS] = true; /* Output incremental distances */
break;
}
pos = 0; txt_a[0] = 0;
while (gmt_getmodopt (GMT, 'G', p, "aiuv", &pos, txt_a, &n_errors) && n_errors == 0) {
switch (txt_a[0]) {
case 'a': Ctrl->G.mode |= GMT_MP_CUMUL_DIST; break; /* Cumulative distance */
case 'i': Ctrl->G.mode |= GMT_MP_INCR_DIST; break; /* Incremental distance */
case 'v': Ctrl->G.mode |= GMT_MP_PAIR_DIST; break; /* Variable coordinates */
case 'u': Ctrl->G.unit = txt_a[1]; /* Unit specification */
break;
default: break; /* These are caught in gmt_getmodopt so break is just for Coverity */
}
}
if (q) q[2] = '+';
if (p) p[0] = '\0'; /* Chop off all modifiers */
/* Here, opt->arg is -G[<lon0/lat0>] */
if (opt->arg[0] == '\0' && Ctrl->G.mode == 0) /* Just gave -G, should mean -G+ue+a */
Ctrl->G.mode |= GMT_MP_CUMUL_DIST;
else if (n_slash == 1) { /* Got -G<lon0/lat0> so we were given a fixed point */
Ctrl->G.mode |= GMT_MP_FIXED_POINT;
n = sscanf (opt->arg, "%[^/]/%s", txt_a, txt_b);
if (Ctrl->G.unit == 'c') gmt_set_cartesian (GMT, GMT_IN); /* Cartesian input */
n_errors += gmt_M_check_condition (GMT, n < 2, "Option -G: Expected -G<lon0>/<lat0>[+u%s|c|C]\n",
GMT_LEN_UNITS_DISPLAY);
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_X),
gmt_scanf_arg (GMT, txt_a, gmt_M_type (GMT, GMT_IN, GMT_X), false,
&Ctrl->G.lon), txt_a);
n_errors += gmt_verify_expectations (GMT, gmt_M_type (GMT, GMT_IN, GMT_Y),
gmt_scanf_arg (GMT, txt_b, gmt_M_type (GMT, GMT_IN, GMT_Y), false,
&Ctrl->G.lat), txt_b);
if ((Ctrl->G.mode & GMT_MP_CUMUL_DIST) == 0) Ctrl->G.mode |= GMT_MP_INCR_DIST;
}
else if ((Ctrl->G.mode & GMT_MP_PAIR_DIST) == 0) { /* Got -G[+u<unit>] so variable point from input */
Ctrl->G.mode |= GMT_MP_VAR_POINT;
if ((Ctrl->G.mode & GMT_MP_INCR_DIST) == 0) Ctrl->G.mode |= GMT_MP_CUMUL_DIST;
}
else if ((Ctrl->G.mode & GMT_MP_PAIR_DIST) && (Ctrl->G.mode & GMT_MP_CUMUL_DIST) == 0)
Ctrl->G.mode |= GMT_MP_INCR_DIST;
else {
if ((Ctrl->G.mode & GMT_MP_INCR_DIST) == 0) Ctrl->G.mode |= GMT_MP_CUMUL_DIST;
}
}
if (Ctrl->G.unit == 'c') Ctrl->G.unit = 'X'; /* Internally, this is Cartesian data and distances */
if (Ctrl->G.mode & GMT_MP_INCR_DIST) Ctrl->used[MP_COL_DS] = true; /* Output incremental distances */
if (Ctrl->G.mode & GMT_MP_CUMUL_DIST) Ctrl->used[MP_COL_CS] = true; /* Output cumulative distances */
if (Ctrl->G.unit == 'C') will_need_RJ = true; /* Since unit C is projected distances */
break;
case 'I':
n_errors += gmt_M_repeated_module_option (API, Ctrl->I.active);
n_errors += gmt_get_no_argument (GMT, opt->arg, opt->option, 0);
will_need_RJ = true; /* Since -I means inverse projection */
break;
case 'L': /* -L<table>[+u[+|-]<unit>][+p] (Note: spherical only) */
n_errors += gmt_M_repeated_module_option (API, Ctrl->L.active);
if (!(gmt_found_modifier (GMT, opt->arg, "pu"))) {
isoldL = opt->arg[strlen(opt->arg)-1] == '+';
if (!isoldL) {
char *pch;
if ((pch = strrchr(opt->arg, '/')) != NULL) {
isoldL = (*(++pch) == '+' || *pch == '-');
if (!isoldL)
isoldL = (strchr (GMT_LEN_UNITS "cC", *pch) != NULL);
}
}
}
if (isoldL)
n_errors += mapproject_old_L_parser (API, opt->arg, Ctrl);
else {
char *m = NULL;
if (gmt_validate_modifiers (GMT, opt->arg, 'L', "up", GMT_MSG_ERROR)) n_errors++;
if ((m = gmt_first_modifier (GMT, opt->arg, "up"))) {
if (gmt_get_modifier (m, 'u', txt_a))
Ctrl->L.unit = mapproject_set_unit_and_mode (API, txt_a, &Ctrl->L.sph);
if (gmt_get_modifier (m, 'p', txt_a))
Ctrl->L.mode = GMT_MP_GIVE_FRAC;
m[0] = '\0'; /* Chop off modifiers */
}
Ctrl->L.file = gmt_get_filename (API, opt->arg, NULL);
if (m) m[0] = '+'; /* Restore modifiers */
}
/* Check settings */
n_errors += gmt_M_check_condition (GMT, !strchr (GMT_LEN_UNITS "cC", (int)Ctrl->L.unit),
"Option -L: Expected -L<file>[+u%s|c|C][+p]\n", GMT_LEN_UNITS_DISPLAY);
if (strchr (GMT_LEN_UNITS, (int)Ctrl->L.unit) && gmt_M_is_cartesian (GMT, GMT_IN))
gmt_parse_common_options (GMT, "f", 'f', "g"); /* Implicitly set -fg since user wants spherical distances */
if (Ctrl->L.unit == 'c') Ctrl->L.unit = 'X'; /* Internally, this is Cartesian data and distances */
if (GMT_Get_FilePath (API, GMT_IS_DATASET, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->L.file))) n_errors++;
Ctrl->used[MP_COL_DS] = Ctrl->used[MP_COL_XN] = Ctrl->used[MP_COL_YN] = true; /* Output dist, xnear, ynear */
if (Ctrl->L.unit == 'C') will_need_RJ = true; /* Since unit C is projected distances */
break;
case 'N':
n_errors += gmt_M_repeated_module_option (API, Ctrl->N.active);
switch (opt->arg[0]) {
case 'a': Ctrl->N.mode = GMT_LATSWAP_G2A; break;
case 'c': Ctrl->N.mode = GMT_LATSWAP_G2C; break;
case 'g': Ctrl->N.mode = GMT_LATSWAP_G2O; break;
case 'm': Ctrl->N.mode = GMT_LATSWAP_G2M; break;
case '\0': Ctrl->N.mode = GMT_LATSWAP_G2O; break;
default:
GMT_Report (API, GMT_MSG_ERROR, "Option -N: Expected -N[a|c|g|m]\n");
n_errors++;
}
break;
case 'Q':
n_errors += gmt_M_repeated_module_option (API, Ctrl->Q.active);
if (opt->arg[0] == 'e') Ctrl->Q.mode |= 1;
if (opt->arg[0] == 'd') Ctrl->Q.mode |= 2;
if (opt->arg[0] == '\0') Ctrl->Q.mode = 3;
break;
case 'S':
n_errors += gmt_M_repeated_module_option (API, Ctrl->S.active);
n_errors += gmt_get_no_argument (GMT, opt->arg, opt->option, 0);
break;
case 'T':
n_errors += gmt_M_repeated_module_option (API, Ctrl->T.active);
k = 0;
if (opt->arg[k] == 'h') { /* We will process lon, lat, height data */
k = 1;
Ctrl->T.heights = true; /* If false we set height = 0 */
}
if (strchr (&opt->arg[k], '/')) { /* Gave from/to */
sscanf (&opt->arg[k], "%[^/]/%s", from, to);
}
else { /* to not given, set to - which means WGS-84 */
strcpy (to, "-");
strncpy (from, &opt->arg[k], GMT_LEN256);
}
n_errors += gmt_M_check_condition (GMT, gmt_set_datum (GMT, to, &Ctrl->T.to) == -1 ||
gmt_set_datum (GMT, from, &Ctrl->T.from) == -1,
"Option -T: Usage -T[h]<from>[/<to>]\n");
break;
case 'W':
n_errors += gmt_M_repeated_module_option (API, Ctrl->W.active);
switch (opt->arg[0]) {
case '\0': Ctrl->W.mode = GMT_MP_M_WH; break;
case 'w': Ctrl->W.mode = GMT_MP_M_WIDTH; break;
case 'h': Ctrl->W.mode = GMT_MP_M_HEIGHT; break;
case 'j': case 'n': case 'g': case 'x':
if ((Ctrl->W.refpoint = gmt_get_refpoint (GMT, opt->arg, 'W')) == NULL) {
n_errors++;
}
Ctrl->W.mode = GMT_MP_M_POINT;
break;
case 'b': Ctrl->W.mode = GMT_MP_M_BREGION; break;
case 'B': Ctrl->W.mode = GMT_MP_M_BSTRING; break;
case 'e': Ctrl->W.mode = GMT_MP_M_EREGION; break;
case 'E': Ctrl->W.mode = GMT_MP_M_ESTRING; break;
case 'o': Ctrl->W.mode = GMT_MP_M_OREGION; break;
case 'O': Ctrl->W.mode = GMT_MP_M_OSTRING; break;
case 'r': Ctrl->W.mode = GMT_MP_M_REGION; break;
case 'R': Ctrl->W.mode = GMT_MP_M_RSTRING; break;
case 'm': Ctrl->W.mode = GMT_MP_M_MREGION; break;
case 'M': Ctrl->W.mode = GMT_MP_M_MSTRING; break;
default:
GMT_Report (API, GMT_MSG_ERROR, "Option -W: Expected -W[e|E|g|h|j|m|M|n|o|O|r|R|w|x]\n");
n_errors++;
break;
}
if ((p = strstr (opt->arg, "+n"))) { /* Building polygon */
if (p[2] == '\0') /* No args, set default nodes */
Ctrl->W.nx = Ctrl->W.ny = GMT_MP_NNODES;
else { /* Scan and assign */
n = sscanf (&p[2], "%u/%u", &Ctrl->W.nx, &Ctrl->W.ny);
if (n == 1) Ctrl->W.ny = Ctrl->W.nx;
}
if (!(Ctrl->W.mode == GMT_MP_M_EREGION || Ctrl->W.mode == GMT_MP_M_REGION)) {
GMT_Report (API, GMT_MSG_ERROR, "Option -W: Modifier +n is only allowed with directives e or r\n");
n_errors++;
}
Ctrl->W.poly = true;
}
will_need_RJ = true; /* Since knowing the dimensions means region and projection */
break;
case 'Z':
n_errors += gmt_M_repeated_module_option (API, Ctrl->Z.active);
if ((p = gmt_first_modifier (GMT, opt->arg, "aift"))) {
unsigned int pos = 0;
txt_a[0] = 0;
while (gmt_getmodopt (GMT, 'Z', p, "aift", &pos, txt_a, &n_errors) && n_errors == 0) {
switch (txt_a[0]) {
case 'a': Ctrl->Z.mode |= GMT_MP_Z_CUMT; break; /* Cumulative time */
case 'i': Ctrl->Z.mode |= GMT_MP_Z_DELT; break;/* Incremental time */
case 'f': Ctrl->Z.formatted = true; break;
case 't': Ctrl->Z.mode |= GMT_MP_Z_ABST;
if (txt_a[1] && gmt_verify_expectations (GMT, GMT_IS_ABSTIME, gmt_scanf (GMT, &txt_a[1], GMT_IS_ABSTIME, &Ctrl->Z.epoch), &txt_a[1])) {
GMT_Report (API, GMT_MSG_ERROR, "Option -Z+t|T : Epoch time (%s) in wrong format\n", &txt_a[1]);
n_errors++;
}
break;
default:
n_errors++;
break;
}
}
p[0] = '\0'; /* Chop off all modifiers so range can be determined */
}
if (opt->arg[0])
Ctrl->Z.speed = atof (opt->arg);
else
Ctrl->Z.mode |= GMT_MP_Z_SPEED;
if (p) p[0] = '+'; /* Restore arg */
if (Ctrl->Z.mode == 0) Ctrl->Z.mode = GMT_MP_Z_DELT; /* Default is time increments */
if (Ctrl->Z.mode & GMT_MP_Z_DELT) Ctrl->used[MP_COL_DT] = true; /* Output incremental time */
if (Ctrl->Z.mode & GMT_MP_Z_CUMT) Ctrl->used[MP_COL_CT] = true; /* Output elapsed time */
if (Ctrl->Z.mode & GMT_MP_Z_ABST) Ctrl->used[MP_COL_AT] = true; /* Output absolute time */
break;
default: /* Report bad options */
n_errors += gmt_default_option_error (GMT, opt);
break;
}
}
if (n_errors) return GMT_PARSE_ERROR; /* Might as well return here since otherwise we may get some false warnings from below as well */
geodetic_calc = (Ctrl->G.mode || Ctrl->A.active || Ctrl->L.active);
no_JR_needed = (Ctrl->A.active || Ctrl->E.active || Ctrl->G.active || Ctrl->L.active || Ctrl->N.active || Ctrl->Z.active);
if (GMT->common.J.width_given) will_need_RJ = true; /* Need -R -J to convert width to scale */
/* The following lousy hack allows NOT having to specify -R */
if (GMT->current.proj.is_proj4) {
if (!GMT->common.R.active[RSET]) { /* Means MAYBE a 1:1 scale was used */
GMT->common.R.wesn[XLO] = 0; GMT->common.R.wesn[XHI] = 1;
GMT->common.R.wesn[YLO] = 0; GMT->common.R.wesn[YHI] = 1;
GMT->common.R.active[RSET] = true;
}
/* See if scale == 1:1 and if yes set -C -F */
if (GMT->current.proj.pars[14] == 1)
Ctrl->C.active = Ctrl->F.active = true;
}
if (will_need_RJ) {
/* Treat mapproject differently than other non-PS producing modules to allow a -R from previous plot to be used.
* Perhaps this needs to be more nuanced beyond PS vs no-PS if other modules end up needed the same treatment */
GMT->current.ps.active = true; /* Briefly pretend we are a PS-producing module */
gmt_set_missing_options (GMT, "RJ");
GMT->current.ps.active = false; /* Come to our senses */
}
n_errors += gmt_M_check_condition (GMT, Ctrl->L.active && GMT->common.j.mode == GMT_GEODESIC, "Option -L: Requires spherical calculations so -je cannot be used\n");
n_errors += gmt_M_check_condition (GMT, Ctrl->Z.active && !Ctrl->used[MP_COL_DS], "Option -Z requires -G+i\n");
n_errors += gmt_M_check_condition (GMT, Ctrl->T.active && no_JR_needed, "Option -T: Cannot work with -A, -E, -G, -L, -W or -Z\n");
n_errors += gmt_M_check_condition (GMT, (geodetic_calc || Ctrl->Z.active) && Ctrl->I.active, "Options -A, -G, -L and -Z cannot work with -I\n");
/* Can only do -p for forward projection */
n_errors += gmt_M_check_condition (GMT, GMT->common.p.active && Ctrl->I.active, "Option -p cannot work with -I\n");
/* Must have -J */
n_errors += gmt_M_check_condition (GMT, !GMT->common.J.active && (Ctrl->G.mode || Ctrl->L.active) && Ctrl->G.unit == 'C',
"Must specify -J option with selected form of -G or -L when unit is C\n");
n_errors += gmt_M_check_condition (GMT, GMT->common.J.active && Ctrl->L.active && Ctrl->L.unit != 'C',
"Cannot specify -J option with selected form of -L\n");
if (!GMT->common.R.active[RSET] && GMT->current.proj.projection_GMT == GMT_UTM && Ctrl->C.active) { /* Set default UTM region from zone info */
if (GMT->current.proj.utm_hemisphere == 0) /* Default to N hemisphere if nothing is known */
GMT->current.proj.utm_hemisphere = 1;
if (gmt_UTMzone_to_wesn (GMT, GMT->current.proj.utm_zonex, GMT->current.proj.utm_zoney,
GMT->current.proj.utm_hemisphere, GMT->common.R.wesn)) {
GMT_Report (API, GMT_MSG_ERROR, "Bad UTM zone\n");
n_errors++;
}
else
GMT_Report (API, GMT_MSG_INFORMATION, "UTM zone used to generate region %g/%g/%g/%g\n",
GMT->common.R.wesn[XLO], GMT->common.R.wesn[XHI], GMT->common.R.wesn[YLO], GMT->common.R.wesn[YHI]);
GMT->common.R.active[RSET] = true;
}
n_errors += gmt_M_check_condition (GMT, Ctrl->L.active && gmt_access (GMT, Ctrl->L.file, R_OK),
"Option -L: Cannot read file %s!\n", Ctrl->L.file);
n_errors += gmt_M_check_condition (GMT, will_need_RJ && !GMT->common.R.active[RSET] && !(geodetic_calc || Ctrl->T.active || Ctrl->E.active ||
Ctrl->N.active || Ctrl->Q.active || GMT->common.J.active), "Must specify -R option\n");
n_errors += gmt_check_binary_io (GMT, 2);
n_errors += gmt_M_check_condition (GMT, (Ctrl->D.active + Ctrl->F.active) == 2, "Can specify only one of -D and -F\n");
n_errors += gmt_M_check_condition (GMT, ((Ctrl->T.active && GMT->current.proj.datum.h_given) || Ctrl->E.active) &&
GMT->common.b.active[GMT_IN] && gmt_get_cols (GMT, GMT_IN) < 3,
"For -E or -T, binary input data (-bi) must have at least 3 columns\n");
n_errors += gmt_M_check_condition (GMT, Ctrl->C.m_origin && GMT->current.proj.projection_GMT != GMT_MERCATOR, "Option -C: Can only give +m for Mercator projection\n");
n_errors += gmt_M_check_condition (GMT, Ctrl->C.m_origin && Ctrl->C.northing != 0.0, "Option -C: Cannot mix +m and the \"northing\" setting\n");
if (!(n_errors || GMT->common.R.active[RSET])) {
GMT->common.R.wesn[XLO] = 0.0; GMT->common.R.wesn[XHI] = 360.0;
GMT->common.R.wesn[YLO] = -90.0; GMT->common.R.wesn[YHI] = 90.0;
}
return (n_errors ? GMT_PARSE_ERROR : GMT_NOERROR);
}
#define bailout(code) {gmt_M_free_options (mode); return (code);}
#define Return(code) {Free_Ctrl (GMT, Ctrl); gmt_end_module (GMT, GMT_cpy); bailout (code);}
EXTERN_MSC int GMT_mapproject (void *V_API, int mode, void *args) {
int ks, n_fields, two, way, error = 0, fmt[2], save[2] = {0,0}, unit = 0, proj_type = 0, lat_mode = 0;
bool line_start = true, do_geo_conv = false, double_whammy = false, first = true;
bool geodetic_calc = false, datum_conv_only = false, along_track = false, projected = false;
unsigned int i = 0, col, speed_col = 2, first_z_col = 0, i_col_x, i_col_y, o_col_x, o_col_y;
unsigned int ecol_type[MP_COL_N] = {GMT_IS_FLOAT, GMT_IS_FLOAT, GMT_IS_FLOAT, GMT_IS_FLOAT,
GMT_IS_FLOAT, GMT_IS_FLOAT, GMT_IS_FLOAT, GMT_IS_ABSTIME};
uint64_t row, n_read_in_seg, seg, n_read = 0, n = 0, k, n_output = 0;
double x_in = 0.0, y_in = 0.0, d = 0.0, fwd_scale, inv_scale, xtmp, ytmp, *out = NULL;
double xmin, xmax, ymin, ymax, inch_to_unit, unit_to_inch, u_scale, y_out_min, m_standard_y_value = 0.0;
double x_in_min, x_in_max, y_in_min, y_in_max, x_out_min, x_out_max, y_out_max, *pcoord = NULL;
double xnear = 0.0, ynear = 0.0, lon_prev = 0, lat_prev = 0, **data = NULL, *in = NULL;
double speed = 0, last_speed = -1.0, extra[MP_COL_N]; /* Max possible extra output columns from -A -G -L -Z */
char format[GMT_BUFSIZ] = {""}, unit_name[GMT_LEN64] = {""}, scale_unit_name[GMT_LEN64] = {""};
char W[GMT_LEN64] = {""}, E[GMT_LEN64] = {""}, S[GMT_LEN64] = {""}, N[GMT_LEN64] = {""};
bool (*map_fwd) (struct GMT_CTRL *, double, double, double *, double *); /* Pointers to the selected forward mapping function */
void (*map_inv) (struct GMT_CTRL *, double *, double *, double, double); /* Pointers to the selected inverse mapping function */
struct GMT_DATATABLE *xyline = NULL;
struct GMT_DATASET *Lin = NULL;
struct GMT_RECORD *In = NULL, *Out = NULL;
struct MAPPROJECT_CTRL *Ctrl = NULL;
struct GMT_CTRL *GMT = NULL, *GMT_cpy = NULL;
struct GMT_OPTION *options = NULL;
struct GMTAPI_CTRL *API = gmt_get_api_ptr (V_API); /* Cast from void to GMTAPI_CTRL pointer */
/*----------------------- Standard module initialization and parsing ----------------------*/
if (API == NULL) return (GMT_NOT_A_SESSION);
if (mode == GMT_MODULE_PURPOSE) return (usage (API, GMT_MODULE_PURPOSE)); /* Return the purpose of program */
options = GMT_Create_Options (API, mode, args); if (API->error) return (API->error); /* Set or get option list */
if ((error = gmt_report_usage (API, options, 0, usage)) != GMT_NOERROR) bailout (error); /* Give usage if requested */
/* Parse the command-line arguments */
if ((GMT = gmt_init_module (API, THIS_MODULE_LIB, THIS_MODULE_CLASSIC_NAME, THIS_MODULE_KEYS, THIS_MODULE_NEEDS, module_kw, &options, &GMT_cpy)) == NULL) bailout (API->error); /* Save current state */
if (GMT_Parse_Common (API, THIS_MODULE_OPTIONS, options)) Return (API->error);
Ctrl = New_Ctrl (GMT); /* Allocate and initialize a new control structure */
if ((error = parse (GMT, Ctrl, options)) != 0) Return (error);
if (!GMT->common.J.active && gmt_M_is_cartesian (GMT, GMT_IN)) { /* -J not given and input not specified as lon/lat; check if we should add -fg */
if ((Ctrl->G.active && Ctrl->G.unit != 'X') || (Ctrl->L.active && Ctrl->L.unit != 'X'))
gmt_parse_common_options (GMT, "f", 'f', "g"); /* Not Cartesian unit so set -fg */
}
/*---------------------------- This is the mapproject main code ----------------------------*/
if (Ctrl->Q.mode & 1) { /* List ellipsoid parameters */
GMT_Message (API, GMT_TIME_NONE, "GMT supports %d ellipsoids, given below (-> indicates default setting)\n", GMT_N_ELLIPSOIDS);
GMT_Message (API, GMT_TIME_NONE, " ID Date a 1/f\n");
GMT_Message (API, GMT_TIME_NONE, "-----------------------------------------------------------\n");
for (i = 0; i < GMT_N_ELLIPSOIDS; i++) {
(i == GMT->current.setting.proj_ellipsoid) ? GMT_Message (API, GMT_TIME_NONE, "->") : GMT_Message (API, GMT_TIME_NONE, " ");
GMT_Message (API, GMT_TIME_NONE, "%-23s %4ld %13.3f %14.9f\n",
GMT->current.setting.ref_ellipsoid[i].name, GMT->current.setting.ref_ellipsoid[i].date,
GMT->current.setting.ref_ellipsoid[i].eq_radius, 1.0/GMT->current.setting.ref_ellipsoid[i].flattening);
}
GMT_Message (API, GMT_TIME_NONE, "-----------------------------------------------------------\n");
}
if (Ctrl->Q.mode & 2) { /* List datum parameters */
GMT_Message (API, GMT_TIME_NONE, "GMT supports %d datums, given below (-> indicates default setting)\n", GMT_N_DATUMS);
GMT_Message (API, GMT_TIME_NONE, " ID Name Ellipsoid x y z Region\n");
GMT_Message (API, GMT_TIME_NONE, "-----------------------------------------------------------------------------------------\n");
for (i = 0; i < GMT_N_DATUMS; i++) {
(!strcmp (GMT->current.setting.proj_datum[i].name, "WGS 1984")) ? GMT_Message (API, GMT_TIME_NONE, "->") :
GMT_Message (API, GMT_TIME_NONE, " ");
GMT_Message (API, GMT_TIME_NONE, "%3ld %-34s %-23s %5.0f %5.0f %5.0f %s\n",
i, GMT->current.setting.proj_datum[i].name, GMT->current.setting.proj_datum[i].ellipsoid,
GMT->current.setting.proj_datum[i].xyz[0], GMT->current.setting.proj_datum[i].xyz[1],
GMT->current.setting.proj_datum[i].xyz[2], GMT->current.setting.proj_datum[i].region);
}
GMT_Message (API, GMT_TIME_NONE, "-----------------------------------------------------------------------------------------\n");
}
if (Ctrl->Q.mode) Return (GMT_NOERROR);
GMT_Report (API, GMT_MSG_INFORMATION, "Processing input table data\n");
if (Ctrl->D.active) {
if ((error = gmt_M_err_fail (GMT, gmt_set_measure_unit (GMT, Ctrl->D.unit), "-D")))
Return (error);
}
if (Ctrl->T.active) gmt_datum_init (GMT, &Ctrl->T.from, &Ctrl->T.to, Ctrl->T.heights);
if (Ctrl->A.active) {
way = gmt_M_is_geographic (GMT, GMT_IN) ? 2 + Ctrl->A.geodesic : 0;
if ((proj_type = gmt_init_distaz (GMT, (way) ? 'k' : 'X', way, GMT_MAP_DIST)) == GMT_NOT_A_VALID_TYPE)
Return (GMT_NOT_A_VALID_TYPE);
}
if (Ctrl->G.active) {
way = gmt_M_is_geographic (GMT, GMT_IN) ? Ctrl->G.sph : 0;
if ((proj_type = gmt_init_distaz (GMT, Ctrl->G.unit, way, GMT_MAP_DIST)) == GMT_NOT_A_VALID_TYPE)
Return (GMT_NOT_A_VALID_TYPE);
}
if (Ctrl->L.active) {
way = gmt_M_is_geographic (GMT, GMT_IN) ? Ctrl->L.sph: 0;
if ((proj_type = gmt_init_distaz (GMT, Ctrl->L.unit, way, GMT_MAP_DIST)) == GMT_NOT_A_VALID_TYPE)
Return (GMT_NOT_A_VALID_TYPE);
}
if (Ctrl->E.active) gmt_ECEF_init (GMT, &Ctrl->E.datum);
if (Ctrl->F.active) {
int is;
if ((is = gmt_check_scalingopt (GMT, 'F', Ctrl->F.unit, scale_unit_name)) == -1) {
Return (GMT_PARSE_ERROR);
}
else
unit = (unsigned int)is;
}
geodetic_calc = (Ctrl->G.mode || Ctrl->A.active || Ctrl->L.active || Ctrl->Z.active);
gmt_M_memset (extra, MP_COL_N, double);