GRendaccess terminates access to the raster image identified by the parameter ri_id and disposes of the raster image identifier. This access is initiated by either GRselect or GRcreate. There must be a call to GRendaccess for each call to GRselect or GRcreate; failing to provide this will result in loss of data. Attempts to access a raster image identifier disposed of by GRendaccess will result in an error condition.
|