The HDF_DFR8_READREF procedure sets the reference number of the image to be read from an HDF file by the next call to HDF_DFR8_GETIMAGE.
HDF_DFR8_READREF, Filename, Reference_number
A scalar string containing the name of the file to be read.
A reference number for an 8-bit raster image.
None.
Introduced: 4.0