New Median/Model Filtering Package - MFILTERS

 fmedian - Quantize and box median filter a list of 1D or 2D images
   fmode - Quantize and box modal filter a list of 1D or 2D images
frmedian - Quantize and ring median filter a list of 1D or 2D images
  frmode - Quantize and ring modal filter a list of 1D or 2D images
  median - Median box filter a list of 1D or 2D images
    mode - Modal box filter a list of 1D or 2D images
 rmedian - Ring median filter a list of 1D or 2D images
   rmode - Ring modal filter a list of 1D or 2D images

The frmedian, frmode, rmedian, and rmode tasks are new. Fmedian, fmode, median, and mode are enhanced versions of the corresponding tasks in the images packages.

The major new capabilities of the package are the ability to: 1) ring median filter a list of images using a sliding circular / elliptical or annular circular / elliptical window, and to 2) set minimum and maximum good data value parameters for the median / modal filters.

These tasks are are being made available at user request prior to their distribution as part of the IRAF 2.11 core system. Please send any questions, comments, or problem reports to davis@noao.edu or iraf@noao.edu. The package retrieval and installation instructions are available in the readme file.