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EDIT: Solved, see my answer.

I've downloaded 8 MOD44B granules from Reverb (using the FTP script method), and am trying to use MRT to mosaic them. I'm falling at the first hurdle though - when I add the 4 files (4 from 2000, 4 from 2007) I get an error saying firstly One of the input files does not exist or the inputs are not the same data product type then Input file does not exist!. If I add files individually, I get an error saying Error in Module: ReadHrFile, Opening Input Header File.

Has any one had this error before, or know how to fix it? I've updated Java and reinstalled MRT.


  • MRT: 4.1 (March 2011)
  • Windows: 7
  • Java: 6 (Updated to 7, still doesn't work)

I would use the online interface, but I need MOD44b which isn't available with that for some reason.

share|improve this question
For future reference, there is a web-based version of the tool called MRTWeb that lets will let you download mosaicked MODIS data without having to download get the source HDF files. This is useful if you're doing a time series analysis. – dmahr Jul 16 '12 at 12:02
Thanks for the suggestion dmahr, although I did try this - see the bottom of my question. MOD44B is unavailable using MRTWeb for some reason (as far as I could tell). – gisol Jul 16 '12 at 14:16
up vote 1 down vote accepted

You need to open ModisTool.BAT rather than the ModisTool.JAR executable. Silly me. Least I have nice new versions of everything running now.

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You can open the ModisTool.bat on Notepad and edit.

In last line it has the Java localization with "java.exe" two times. You need erase the last time and save it.

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