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PHP's gd library is missing or unable to create PNG images
Null Value Type
A null value denotes the value that should be used to represent the “no data” value in a Map or Categorical Map. This value is related to the cell type used to represent the cells in the map.
GUI Editor
EGO Script
A null value constant can be represented in a EGO Script using the following syntax:
Automatic Conversions
- Converted to: None.