There are four options under the Display Data menu tab:
The Grid Domain program creates a Postscript graphic of the meteorological data set domain, which can be useful to determine the area covered by a data set. The domain can be displayed by selecting a meteorological data file, in this case the 40 km lambert-conformal projection of the NAM model (again, keep data files in a directory without spaces in the name). Every fourth grid point will be displayed (set the grid point plotting interval to 4) and latitude-longitude lines will be drawn every 5 degrees (set lat-lon interval to 5). Shown below is the NAM 40 km grid domain.
Convert Postscript to Gif
The Convert Postscript menu will display the last created
Postscript filename, if this is not the desired graphic to convert, it should be replaced with
the appropriate name. The output file extension (gif, jpg, bmp, etc) represents the conversion
format. The conversion process uses Ghostscript to read the Postscript file and ImageMagick to
convert that file to a variety of other supported formats (conversion to gif is the default). In
this example, the showgrid.ps file is converted to showgrid.gif.
The slider bar determines the size of the output graphic in pixels per inch. The default value of
70 will produce an output frame of comparable size to the input graphic. The checkboxes permit the
creation of a multiframe animation in one file or multiple output files if the "Frames" option has