is_data: Output raster should not have nodata values

dirkvdb · dirkvdb · commit 885223ec6569 · 2025-06-27T11:30:36.000+02:00
diff --git a/algorithms/include/gdx/algo/nodata.h b/algorithms/include/gdx/algo/nodata.h
@@ -49,8 +49,8 @@ template <typename InputRaster, typename OutputRaster>
 void is_data(const InputRaster& input, OutputRaster& result)
 {
     using TDest = typename OutputRaster::value_type;
-    std::transform(optional_value_begin(input), optional_value_end(input), optional_value_begin(result), [](auto& value) {
-        return TDest(value ? 1 : 0);
+    std::transform(optional_value_begin(input), optional_value_end(input), result.begin(), [](auto& value) {
+        return TDest(value.has_value() ? 1 : 0);
     });
 }
 

Original file line number	Diff line number	Diff line change
`@@ -49,8 +49,8 @@ template <typename InputRaster, typename OutputRaster>`
`49`	`49`	`void is_data(const InputRaster& input, OutputRaster& result)`
`50`	`50`	`{`
`51`	`51`	`using TDest = typename OutputRaster::value_type;`
`52`		`- std::transform(optional_value_begin(input), optional_value_end(input), optional_value_begin(result), [](auto& value) {`
`53`		`- return TDest(value ? 1 : 0);`
	`52`	`+ std::transform(optional_value_begin(input), optional_value_end(input), result.begin(), [](auto& value) {`
	`53`	`+ return TDest(value.has_value() ? 1 : 0);`
`54`	`54`	`});`
`55`	`55`	`}`
`56`	`56`