plot_parmodel

           plot parametriced models

           cafe

           plot type

           group    - (optional) Define the data group to plot.
                      Default is the current group. Must be in
                      range [0..29].

           Apart from IDL oplot keywords following special
                      are defined:
        modelrange  - Perform range determination for model size also
                      (if range is not required anyway because still
                      not defined).
        param       - Parameter to vary. This can be either a
                      parameter name or its numer. Default is the
                      first parameter
        startval    - First value of parameter. Default is the
                      current parameter value.
        stopval     - Last value of parameter. Default is the current
                      parameter value.
        parnum      - Number of curves to plot by varying given
                      parameter.
        parstep     - Increment to parameter to plot. Takes predence
                      over parnum if stopval is defined.
           distinct - Plot each parameter model with a different
                      color/linestyle:
        deltacolor  - Color difference for distinct parameters.
     deltalinestyle - Increase of line styles for distinct parameters.
                      Default: 0 (no change).

        parmodel    - plots the model for group given with current
                      parameters. It is possible to modify a single
                      parameter within given ranges.
                      X/Y ranges are kept.

           None.

           > plot, data+model
                -> data + model in single window is displayed.

           $Id: cafe_plot_parmodel.pro,v 1.6 2004/07/30 17:17:26 goehler Exp $

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