iMOD User Manual version 4.4 (html)

10.19Data Set 19: Parameter Estimation – Zone Definition

Data Set 19



Enter for NZONES an IDF file that contains the position of zones. The zone numbering should be equal to the value PIZONE from Data Set 16. You can specify PIZONE to be specified in more than one IDF.


Enter an IPF file that contains the location of a pilot point. The content of the IPF should be \(x\), \(y\) and \(zone\). Within a single IPF more zones per point or more points per zone can be defined.


Enter a constant value to specify one PIZONE for the entire model area, e.g. CONSTANT=2

A fraction can be added to specify a fraction that that parameter will be used for the parameter optimization, e.g. the value within the IDF will be 2.34, meaning that the parameter belong to zone number 2 and taken for 34% part of the optimization of that parameter.