Point density
Algorithm
The Point density operation rasterizes a point map on a pixel size which is specified in the georeference.
The value assigned to an output pixel is either determined:
- by the number of points encountered in a pixel; use the dialog box or the MapRasterizePointCount expression on command line, or
- by the sum of the point values encountered in a pixel, or the sum of attribute values; use the MapRasterizePointSum expression on the command line.
Process Count:
- All pixels are initialized on value zero.
- For every point in the input point map, it is determined in which output pixel it is located.
- The value of an output pixel is incremented by 1, for each point which has a defined value and which is found in that pixel.
- If no points with a defined value are found in a pixel, and you used the default domain Count, the output pixel obtains value 0.
See also:
Point density : functionality
Points to raster: functionality