|Functions / Raster / Grid Functions|
Returns the value of a Grid at the specified pixel location (x, y).
If the Grid file type is numeric, as is the case for continuous grids (.GRD), the return type is a double.
If the Grid file type is character-based, as is the case for classified grids (.GRC), the return type will be a string.
MI_GridValueAtPixel ( GridInfo, XPixel, YPixel )
GridInfo is an expression which returns a GridInfo, where GridInfo is the name of the raster column in the table, by default it is MI_RASTER,
XPixel is an expression which returns an integer representing the X pixel coordinate, and
YPixel is an expression which returns an integer representing the Y pixel coordinate
Determines the grid value of the MI_RASTER column at the x=10, y=10 pixel from the table named GRIDTABLE.
select MI_GridValueAtPixel("MI_RASTER", 10, 10) from "/GRIDTABLE"
Raster tables expose a RasterInfo and grid tables expose a GridInfo as the value for the MI_Raster column. This function applies only to grid images (.GRD and .GRC).