Re: [PR] [SEDONA-515] Add handling of noDataValues in RS_Resample [sedona]

["jiayuasu (via GitHub)" <gi...@apache.org>]

jiayuasu commented on code in PR #1279:
URL: https://github.com/apache/sedona/pull/1279#discussion_r1525764009


##########
common/src/test/java/org/apache/sedona/common/raster/RasterEditorsTest.java:
##########
@@ -134,6 +134,61 @@ public void testResample() throws FactoryException, TransformException {
         }
     }
 
+    @Test
+    public void testResampleNoDataValueHandled() throws FactoryException, TransformException {
+        double[] values1 = {1,99,3,4,99,6,7,99,9,10,99,12};
+        double[] values2 = {10,11,-9999,13,14,15,-9999,17,18,19,-9999,21};
+        GridCoverage2D raster = RasterConstructors.makeEmptyRaster(1, "d", 4, 3, 0, 0, 2, -2, 0, 0, 0);
+        raster = MapAlgebra.addBandFromArray(raster, values1, 1, 99.0);
+        raster = MapAlgebra.addBandFromArray(raster, values2, 2, -9999.0);
+
+        GridCoverage2D newRaster = RasterEditors.resample(raster, 6, 5, 1, -1, false, "bilinear");

Review Comment:
   Can you add a test to downsample the raster? E.g., the original raster is 4, 3, resample it to 2, 2?



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