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I have a 10 meter cell size Oregon DEM that I would like to match my Northern California DEM thats at a 30 meter cell size.

How would I go about changing the Oregon DEM cell size from a 10 meters to 30 meters using ArcGIS Desktop 10.5?

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I believe by extent you mean the raster cell size. According to ESRI Altering The Resolution you have two options.

1) Interpolation

2) Aggregation

I also believe it is possible to simply export the current 10x10 raster to a 30x30 raster by simply changing the cell in the export popup window (see image below). But I am not sure how this aggregates the data. enter image description here

  • I see. If i was going to try this exporting method to change the cell size, would i just be multipliying the cx and cy by 3? – Joshua Aranda Apr 23 '17 at 16:26
  • Yes. Just change the cell size in the export dialog to the desired size (in your case 30 , 30) and export. Again, I am not sure how the aggregation works when this is done in this manner. – ddivittorio Apr 23 '17 at 16:47

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