How to get pixel size of a input raster using the modeler

 

In the ENVI modeler, the ENVI Task Extract Properties and Metadata is designed to extract properties and/or metadata from an input raster.

https://www.nv5geospatialsoftware.com/docs/ModelerExtractPropertiesMetadata.html

However, while exploring the list of properties that could be extracted by this task, pixel size is not listed. Adding pixel_size in the Other Properties field will return an error when executing the model. The reason is the property needs to be extracted as: 

raster.spatialref.pixel_size

while setting pixel_size in Other Properties will extract it as

raster.pixel_size

• Thus, extracting pixel size with the modeler will require calling the Extract Properties and Metadata task two times.

 

1/ First node of Extract Properties and Metadata

• The input is the raster from which you need to extract the pixel size.
• The output property of this first node is Spatialref.

2/ Second node of Extract Properties and Metadata

• The input is the Spatialref property extracted by the first node.

• Then adjust the parameter of this second node by setting pixel_size in Other Properties field.

• The output will be the pixel size of the input raster. It can now be set as input in any other task that would require pixel_size in input.

 

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created by BC (EU) on 05/22/2026.

reviewed by MM on 05/26/2026.