Keywords
Heixel
Analogue to a pixel (picture element), a heixel is one element of a height field encoding the elevation of a surface. There are two basic types of heixels depending on the necessary precision of the height field:
- 16bit integer with scale and bias
- 32bit float
Undefined elevation values are denoted by a specific no-data value (e.g. −9999) or by a IEEE float NaN (not-a-number) value.