get heatmap tiles

GET https://pollen.googleapis.com/v1/mapTypes/GRASS_UPI/heatmapTiles/0/0/0

The heatmapTiles endpoint provides pollen-related heatmaps through tile overlay. A tile overlay is a collection of image tiles that can be displayed on top of Google Maps. Each image tile is 256 x 256 pixels.

The tile overlay is a grid assembled from a collection of tiles, each assigned (X,Y) coordinates. The tile with coordinates (0,0) is always at the northwest corner of the map. The X values increase from west to east, while the Y values increase from north to south.

The zoom level determines how large or small the contents of a map appear in a map view. The tile grid size is determined by scaling the X and Y coordinates exponentially by the zoom level.