Parent Topic: Variables
Special
Special variables allow access to information about the file and location information about the pixel being processed. They can be used within numerical expressions like constants.

Variable Description

 @x             current x (pixel) processing location
 @y             current y (line ) processing location
 @dbx           size of database in x (pixel) direction
 @dby           size of database in y (line ) direction
 @metrex        size of a pixel in x direction in metres
 @metrey        size of a pixel in y direction in metres
 @geox          x georeferenced centre of current pixel
 @geoy          y georeferenced centre of current pixel
 @sizex         x size of a pixel in georeferenced units
 @sizey         y size of a pixel in georeferenced units

Parent Topic: Variables
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