Fixes Open-EO#165: clarify kernel orientation

CHANGELOG.md

@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `clip`: Fixed examples.
 - `resample_*`: Clarified behaviour.
 - `mean`: Clarify behavior for arrays with `null`-values only.
+- `apply_kernel`: Clarify orientation of the 2D kernel array [#165](https://github.com/Open-EO/openeo-processes/issues/165)
 
 ## 1.0.0-rc.1 - 2020-01-31
 

apply_kernel.json

@@ -1,6 +1,6 @@
 {
     "id": "apply_kernel",
-    "summary": "Apply a kernel to compute pixel-wise values",
+    "summary": "Apply a spatial convolution with a kernel",
     "description": "Applies a 2D convolution (i.e. a focal operation with a weighted kernel) on the horizontal spatial dimensions (axes `x` and `y`) of the data cube.\n\nEach value in the kernel is multiplied with the corresponding pixel value and all products are summed up afterwards. The sum is then multiplied with the factor.",
     "categories": [
         "cubes",
@@ -17,7 +17,7 @@
         },
         {
             "name": "kernel",
-            "description": "A two-dimensional weighted kernel. Each dimension of the kernel must have an uneven number of elements, otherwise the process throws a `KernelDimensionsUneven` error.",
+            "description": "Kernel as a two-dimensional array of weights. The inner level of the nested array aligns with the `x` axis and the outer level aligns with the `y` axis. Each level of the kernel must have an uneven number of elements, otherwise the process throws a `KernelDimensionsUneven` error.",
             "schema": {
                 "description": "A two-dimensional array of numbers.",
                 "type": "array",