Name

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      VLINE

Purpose

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      Plot a vertical line after erasing last plotted line.

Category

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Calling Sequence

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      vline, [x]

Inputs

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      x = x coordinate of new line. in
        If x not given last line is erased.

Keyword Parameters

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Keywords

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        /DEVICE means use device coordinates (default).
        /DATA means use data coordinates.
        /NORM means use normalized coordinates.
        /NOERASE means don't try to erase last line.
        /ERASE means just erase last line without plotting another.
        /RESET means reset erase and return. Skips next erase.
          Use /RESET for a new window size.
        RANGE=[ymin, ymax] min and max y coordinates of line.
        NUMBER=n line number (0 to 9, def=0).
        COLOR=c set plot color.
        LINESTYLE=s set line style.
        /XMODE use XOR mode (faster).

Outputs

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Common Blocks

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      vline_com

Notes

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Modification History

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      R. sterner, 5 June, 1992
      R. Sterner, 1998 Jan 15 --- Dropped use of !d.n_colors.
      R. Sterner, 2002 Sep 06 --- Added /XMODE, /RESET.
      R. Sterner, 2002 Sep 09 --- Added empty to avoid some minor artifacts.
  Copyright (C) 1992, 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.