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I would like to do following steps using two types of images (precpitation and Land cover image):

  1. select pixel values of precipitation image within each land cover classes
  2. calculate total amount of precipitation of each land cover classes

Could you please tell me the tools I use and the steps I need to follow in ArcGIS, ENVI, or ERDAS.

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up vote 2 down vote accepted

In ArcGIS use the zonal statistics tool.

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