I processed a tiff DEM (I call it A) in MATLAB and the result (I call it B) loses its georeferencing information. Now I imported B in the ArcMap again and need to overlay it on A (georeferenced) in ArcMap. So they both have the same number of rows and columns. I just want to georeference B exactly the same as A. It should be something quite easy forward like just copying the georeferencing information of A to B (two rasters with the exact same size). But I couldn't find any help through this.
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2 Answers
One option would be to use the Esri world file. The world file is basically a text file that contains the georeferencing information for a raster. You can create a world file for raster (A) and apply it to raster (B) simply by renaming the world file to match the name of raster (B). Use the Export Raster World File tool to create the file from Raster A, then you can use it to update Raster B.
Here is the help article on world files, I hope this helps! http://desktop.arcgis.com/en/arcmap/10.3/manage-data/raster-and-images/world-files-for-raster-datasets.htm
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SO I Used "Export Raster World File" from A file. How can I update the B based on that? Is there any tool?! Commented Jun 21, 2017 at 17:06
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"You can create a world file for raster (A) and apply it to raster (B) simply by renaming the world file to match the name of raster (B)." Just rename the world file and add it to the folder where your raster B is, then try loading the raster to ArcMap.– alecsxCommented Jun 22, 2017 at 7:22
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@user68652 Just rename the file to match the file name of raster B, and make sure they are in the same directory.– EthanBeeCommented Jun 22, 2017 at 16:56
If you have GDAL installed, you could use gdal_tranlate to assign a coordinate system to the raster using the known corner coordinates and the "-a_ullr" option.
Ex. (assign EPSG:2254 using corner coordinates):
gdal_translate original.tif -a_srs EPSG:2254 -a_ullr 964391.0 452402.0 1125431.0 294002.0 output.tif
You could get the corner coordinates from your example "A" file by using ArcGIS and viewing the "extents" information or by using "gdalinfo" and reading the "Corner Coordinates".
