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      Edit curve points with mouse. Overlay spline.


Calling Sequence

      pltcrv, x, y


Keyword Parameters


        XRANGE=xran Range to allow in X.
        YRANGE=yran Range to allow in Y.
          Points are not allowed outside these ranges.
        /XFIX prevents x from being changed.
        /LOG means plot log Y axis.
        /NORMALIZE means keep max at 1.0
        X2=x2, Y2=y2 Optional reference curve to plot.
        SPLINE=n Display n point spline curve. n must
          be more than the number of elements in x and y.
        SX=sx, SY=sy Returned spline curve points.
        ERROR=err Error flag: 0=ok, 1=aborted.
        PLOT keywords also allowed.


Common Blocks


      Notes: Call pltcrv with initial x and y arrays.
        These will be updated on exit.

Modification History

      R. Sterner, 1994 Apr 13
      R. Sterner, 1998 Jan 15 --- Dropped use of !d.n_colors.
      R. Sterner, 1998 May 20 --- Added X and YRANGE.
      R. Sterner, 1998 May 21 --- Fixed blowup if lastx eq last-1x.
      Added /XFIX so x cannot be changed. Added /LOG.
  Copyright (C) 1994, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.

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