PcModWin Example Input Screens

Below is an example of a PcModWin user input screen:

A user just clicks on the inputs and selects the appropriate values from easy to understand prompts. More detail on any input can be viewed by clicking on the input label, which calls up a large Windows help file with a complete description of the prompt. Compare this with a typical ASCII input file required to run MODTRAN directly:

T   6    1    0    0    0    0    0    0    0    0    0    0    0    0.000   0.00
F   2T   5   330.000 
    1    0    0    0    0    0     0.000     0.000     0.000     0.000     0.000
     6.000    10.000    30.000     0.000     0.000     0.000    0          0.000
  2050.000  2150.000     1.000     1.000 

If you compile MODTRAN yourself and run it from a command line, you must hand edit text files like this and make sure numbers are lined up in the proper columns to satisfy the requirements of formatted FORTRAN input. Part of the very first line of this file corresponds to the inputs shown on the window above. It gets worse because as some inputs are set to certain values, new MODTRAN options are enabled, so new lines of inputs are required (in the correct order, of course). MODTRAN input files using complex options like user defined atmospheres can easily run to 100 lines or more in length. PcModWin will generate all of these files with proper formatting automatically for you. For most people, filling out an input window like the one above is easier than editing a text file like this!

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