From 4148b3b9be60d787d7062515fb0063840e0162a5 Mon Sep 17 00:00:00 2001
From: Chad Burt <chad@underbluewaters.net>
Date: Thu, 10 Oct 2024 19:55:44 -0700
Subject: [PATCH] Fix exception when attempting to calculate ckmeans for more
 buckets than there are unique values

---
 .../src/rasterInfoForBands.ts                 | 26 ++++++++++---------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/packages/spatial-uploads-handler/src/rasterInfoForBands.ts b/packages/spatial-uploads-handler/src/rasterInfoForBands.ts
index d050e56c..dc12f2ee 100644
--- a/packages/spatial-uploads-handler/src/rasterInfoForBands.ts
+++ b/packages/spatial-uploads-handler/src/rasterInfoForBands.ts
@@ -249,19 +249,21 @@ export async function rasterInfoForBands(
         n,
         quantileBuckets(sampledPixelValues, n, b.minimum, b.maximum, true, true)
       );
-      addBuckets(
-        b.stats.naturalBreaks,
-        n,
-        naturalBreaksBuckets(
-          sampledPixelValues,
+      if (sampledPixelValues.length > n) {
+        addBuckets(
+          b.stats.naturalBreaks,
           n,
-          b.stats.histogram.length,
-          b.minimum,
-          b.maximum,
-          10000,
-          true
-        )
-      );
+          naturalBreaksBuckets(
+            sampledPixelValues,
+            n,
+            b.stats.histogram.length,
+            b.minimum,
+            b.maximum,
+            10000,
+            true
+          )
+        );
+      }
       // Seems to be a quirk in the library where it returns -9999 for stdev when it can't be calculated
       if (b.stats.stdev !== -9999) {
         addBuckets(