Name

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      SHADE_SURF2

Purpose

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      Allow image overlay with surface shading.

Category

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Calling Sequence

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      shade_surf2, z, [x,y]

Inputs

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      z = Surface array. in
      x,y = optional x and y arrays. in
        (like shade_surf).

Keyword Parameters

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Keywords

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        SHADES=img Byte scaled image to map onto surface.
          Same size as z. Default is byte scaled z.
        GAMMA=g Brightness gamma exponent (def=0.3).
          Let s be the normal surface shading which ranges
          from 0 to 1. s^g is the shading actually used.
          GAMMA = .3 seems to work well. Higher for more contrast.
        Other SHADE_SURF keywords are allowed.

Outputs

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Common Blocks

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Notes

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Modification History

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      R. Sterner, 1994 Apr 27
      R. Sterner, 1998 Jan 15 --- Dropped use of !d.n_colors.
  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.