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Purpose
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Maps the name of a raster image to an index. |
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Return value
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Returns the index of the raster image if successful and FAIL (or -1) otherwise. |
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Description
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GRnametoindex returns, for the GR interface identified by the parameter gr_id, the index (index) of the raster image named gr_name. |
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The value of index can be passed into GRselect to obtain the raster image identifier (ri_id). |