!@I had a similar problem with building out presence/absence (0/1) rasters to the same extent as a larger raster that I wanted to include in a Spatial Analyst Tools>Local>Combine analysis on, so after a lot of angst, came up with the following solution: Set data frame to WGS84 and correct extent using View>Data frame Properties>Extent>Fixed Extent (enter values). Clip Options>Check Clip to shape >Specify shape>Custom Extent (enter desired values) Created a graphic rectangle to the dimensions of raster with desired extent then converted to feature. Used this in Data Management>Raster>Raster Properties>Calculate statistics to prepare the smaller area raster for reclassifying. Reclassified (Spatial Analyst Tools>Reclass>Reclassify) Nodata as 0, Absence as 1, and Presence as 2. Then Clipped (Data Management>Raster>Raster processing>Clip) to raster containing desired extent ("Maintain clipping extent" Checked, which adjusts the number of columns and rows and resample pixels so as to exactly match the clipping extent specified), which will populate the pixels out to the desired extent with NoData values (you can visualize them by coloring NoData in layer properties). Then reclassify NoData and 1 to 0, and 2 to 1 to get a presence/absence raster of desired extent. Then export as tif (you can check in Property the extent is correct before punching the save button) Maybe not all the steps are necessary for your situation but it worked for me. The key is the Calculate statistics bit, which is apparently necessary for a lot of analysis and reclassifying tasks especially those involving NoData cells. Cheers Des
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