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Convert .ROI files to an ArcGIS friendly raster

  • January 12, 2017
  • 2 replies
  • 58 views
R

Hi,

I have a bunch of files in .ROI format, that I need to convert into something useable by ArcGIS. Each .ROI file has 3 fields - lat, long, and a temperature value - and there is about a million rows. I've managed to convert one into a .IMG file using a manual ROI --> convert to CSV --> convert to shapefile --> convert to raster process, in Excel and ArcGIS. This took about 3 hours. So, with 20 of them to do (and more in the future) I'm hoping to find a better solution.

I'm new to FME, and have had a couple of attempts but I'm not really sure what I'm doing so hopefully there is someone out there who does! FME doesn't appear to read a .ROI file, so I'll have to do a manual conversion to CSV, then go from there.

*Edit: I think .ROI files were exported from ENVI or MATLAB, as I can't find much else that will read them.

Any assistance on this is appreciated!

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2 replies

fmelizard
Safer
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  • fmelizardSafer
  • Safer
  • January 13, 2017

Hi @reenderbuikema, If you can get these files into csv you should have no trouble converting into something readable by ArcGIS - GeoTiff or something similar, perhaps ECW or ERS. Using a 3DForcer transformer on the Temperature Values to create z values and then use a NumericRasterizer before writing out to your preferred format. Are the ROI files readable by notepad? If so the CSV reader might be able to read them anyway.

R

Thanks for your reply @MattAtSafe - they are readable in Notepad, and I can save a CSV from there. I'll try the tools you've suggested and see how I go. Thanks again!

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