McIDAS Programmer's Manual
*.GRX
Graphics save tables for McIDAS-X, where * is a user-defined file name.
These binary files contain a table of the red, green and blue color intensities (0 to 255) for the graphics levels on a McIDAS-X workstation. The table is of variable length, depending on the number of graphics levels allocated by the McIDAS-X session that generated the file. Use the GU application to create a McIDAS-X graphics save table.
For graphics save tables Application Program Interfaces (APIs), refer to the API functions list at the end of this section.
Word allocation
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0 - 3
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reserved
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4
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red color intensity for graphics level 1
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5
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green color intensity for graphics level 1
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6
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blue color intensity for graphics level 1
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...
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...
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3 * (n-1) + 1
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red color intensity for graphics level n
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3 * (n-1) + 2
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green color intensity for graphics level n
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3 * (n-1) + 3
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blue color intensity for graphics level n
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...
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...
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3 * (max-1) + 1
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red color intensity for the maximum graphics level
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3 * (max-1) + 2
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green color intensity for the maximum graphics level
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3 * (max-1) + 3
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blue color intensity for the maximum graphics level
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API functions
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delgra
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deletes a saved graphics table
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resgra
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restores a saved graphics table
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savgra
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writes a graphics save table
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