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IMGFILT Correction for
McIDAS-X 2011.1

The McIDAS-X 2011.1 tar file available on the 2011.1 Software and Instructions page was updated 09 December 2011 at 20:50 UTC to include a corrected version of the IMGFILT command. The corrected IMGFILT, like that in previous versions of McIDAS-X, sets the destination image value to 0 (zero) if the corresponding source image value is less than the specified minimum.

Users who do not use the IMGFILT command can skip this update. Users who run the IMGFILT command and downloaded and installed McIDAS-X 2011.1 on their Unix workstation prior to 09 December 2011 20:50 UTC will need to install the corrected IMGFILT command by completing the instructions below.


Complete the following steps to download, compile and install the corrected IMGFILT command for McIDAS-X version 2011.1.

  1. Log on to the workstation as mcidas.
  2. Change to the source directory for 2011.1 and make a backup copy of the existing IMGFILT source file.
      Type: cd  ~mcidas/mcidas2011.1/src
      Type: cp  imgfilt.pgm  imgfilt.pgm.bak
  3. Download (e.g., right-click and select Save option) the following file to the ~mcidas/mcidas2011.1/src directory on your McIDAS-X workstation.
    File name Size Description
    imgfilt.pgm 175 KB updated to set the destination value to 0 (zero) if the source value is less than the specified minimum
  4. Change to the ~mcidas directory and run the make option to force a compile of the updated module (imgfilt.pgm).
      Type: cd  ~mcidas
      Type: sh  ./mcidas2011.1.sh  make
  5. Run the install option to install the updated module.
      Type: sh  ./mcidas2011.1.sh  install
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