Function
grid_calculus
ParameterNumber|XMIN|xmin|None|None|0.0
ParameterNumber|XMAX|xmax|None|None|0.0
ParameterNumber|YMIN|ymin|None|None|0.0
ParameterNumber|YMAX|ymax|None|None|0.0
ParameterString|FORMUL|Formula|
OutputRaster|RESULT|Function