Agregate (generalizing thematic raster data) – Spatial Analyst

JanKlasa

Good morning,

I would like to use landform raster data from Global Ecological Land Units dataset from USGS and ESRI but the original data are very too big. That's way I used Agregate tool from Spatial Analyst toolbox. The output data are smaller but the field with information about types of landform is missing – it was not transferred from original (input) raster dataset.
Why? Where is the problem?

Thank you very much!
Jan Klasa

XanderBakker

The Aggregate tool is used for continuous data and not for thematic data. If you have a class with value 3 next to a class with value 5 the mean would result class 4, which probably does not have any relation to what you want to obtain. The result is probably a floating raster that will not have an attribute table.

Alternative processes are described here for thematic data:

Generalization of classified raster imagery—Help | ArcGIS for Desktop