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I'm doing data-analysis on satellite data and my source data is in GeoTIFF-file format. What I would like to do with the data is:

1) Open the raster data in ArcMap etc.  
2) Change the coordinate system from WGS84 --> ETRS-TM35FIN 
3) Extract an area from the original data specified by ETRS-TM35FIN coordinates 
4) Save the extracted area as plain .tif-file so that I can do data-analysis on it in Matlab

Can someone give the steps I need to do, in order to achieve my goals?

I have no experience in ArcGIS software and the terminology etc. is very new to me, but I don't want to start reading a 500 page book just to get my data into a format so that I can analyze it in Matlab.

The following picture will summarize my question:

enter image description here


I'm able now to extract specific area from the GeoTiff, but I can't save it as a plain .tiff-file:

enter image description here

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  • Do you have access to the Spatial Analyst extension? It will be required for extracting by cooridnates. Jun 17, 2013 at 7:57
  • Hi @Devdatta Tengshe Yes, I do =) But I don't know how to use it. The whole program is new to me :S
    – jjepsuomi
    Jun 17, 2013 at 7:58
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    Matlab can also read and write geotiff-files (R2011 and later)
    – Martin
    Jun 17, 2013 at 8:14
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    @jjepsuomi Yes, I'm afraid that you do need the Mapping toolbox.
    – Martin
    Jun 17, 2013 at 9:11
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    Also, try using only one "f", like .tif
    – Martin
    Jun 17, 2013 at 9:12

1 Answer 1

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I'll suggest that you can do this using Geoprocessing . This will be the way with the least amount of interaction with ArcGIS. This needs to be just a two stage process.

  1. Firstly, you will need to run the Project Raster tool. You can export the raster to ETRS-TM35FIN coordinate system

  2. Then you can extract the required area, by using the Extract by Polygon (Spatial Analyst) tool. in the out raster, if you provide the name with .tif, it will be exported as a Tiff File

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  • I have a problem with exporting the file as a plain .tif-file
    – jjepsuomi
    Jun 17, 2013 at 9:08
  • I will post print screen here. The Extract by Polygon complains that the file format isn't allowed even though I gave it the file extension .tiff
    – jjepsuomi
    Jun 17, 2013 at 9:09
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    @jjepsuomi: Please try with the extension.tif Single f, not double f Jun 17, 2013 at 9:13
  • Thank you for your reply, I tried that and it worked. But isn't that again a GeoTiff? Not plain TIFF, because I can't view the extracted file in Windows Photo Viewer. Windows Photo Viewer says that the file format is not recognized, which implies to me that it is a GeoTiff ? =)
    – jjepsuomi
    Jun 17, 2013 at 9:15
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    One way I have found out, is that you can add the geotiff to ArcMap, and then export the entire map to Tiff. resources.arcgis.com/en/help/main/10.1/index.html#//… This will ofcourse lead to loss of resolution ( both from 32 bit to 8 bit, as well as less number of pixels) Jun 17, 2013 at 10:10

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