Surface Data Type
Specifies the data type for surface (non-paletted) NGrid files.
The Real16 data type is less precise than Real32 but may have better compatibility with viewing applications.
Calculate Min/Max Z Values
Specifies whether to calculate min/max z values when writing out data.
The NGrid format stores coordinates as integer values with a scale and offset factor, scaled between the minimum and maximum z values.
- Yes (default): The NGrid writer will calculate the true minimum and maximum z values so that the entire integer range may be used.
- No: If a specific range is desired, the NGrid writer will take the minimum and maximum z values from the ngrid_GRDZMin and ngrid_GRDZMax format attributes. For example, this might be useful when performing an NGrid-to-NGrid translation, when it is desirable to keep the output raster values exactly equal to the input values.