diff options
Diffstat (limited to 'platform/darwin/src/MGLHeatmapStyleLayer.h')
| -rw-r--r-- | platform/darwin/src/MGLHeatmapStyleLayer.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/platform/darwin/src/MGLHeatmapStyleLayer.h b/platform/darwin/src/MGLHeatmapStyleLayer.h index 46fc13fb50..d6abdca65f 100644 --- a/platform/darwin/src/MGLHeatmapStyleLayer.h +++ b/platform/darwin/src/MGLHeatmapStyleLayer.h @@ -13,10 +13,11 @@ NS_ASSUME_NONNULL_BEGIN A heatmap visualizes the spatial distribution of a large, dense set of point data, using color to avoid cluttering the map with individual points at low zoom levels. The points are weighted by an attribute you specify. Use a heatmap - style layer in conjunction with point or point collection features in vector - tiles loaded by an `MGLVectorTileSource` object or `MGLPointAnnotation`, - `MGLPointFeature`, `MGLPointCollection`, or `MGLPointCollectionFeature` - instances in an `MGLShapeSource` object. + style layer in conjunction with point or point collection features. These + features can come from vector tiles loaded by an `MGLVectorTileSource` object, + or they can be `MGLPointAnnotation`, `MGLPointFeature`, `MGLPointCollection`, + or `MGLPointCollectionFeature` instances in an `MGLShapeSource` or + `MGLComputedShapeSource` object. Consider accompanying a heatmap style layer with an `MGLCircleStyleLayer` or `MGLSymbolStyleLayer` at high zoom levels. If you are unsure whether the point @@ -65,8 +66,9 @@ MGL_EXPORT #pragma mark - Accessing the Paint Attributes /** - Defines the color of each point based on its density value in a heatmap. Should - be an expression that uses `$heatmapDensity` as input. + The color of each screen point based on its density value in a heatmap. This + property is normally set to an interpolation or step expression with the + `$heatmapDensity` value as its input. The default value of this property is an expression that evaluates to a rainbow color scale from blue to red. Set this property to `nil` to reset it to the |