HDF_DFR8_GETINFO

The HDF_DFR8_GETINFO procedure retrieves information about the current 8-bit HDF image.

Calling Sequence

HDF_DFR8_GETINFO, Filename, Width, Height, Has_Palette

Arguments

Filename

A string containing the name of the file to be read.

Width

A named variable in which the width of the image is returned.

Height

A named variable in which the height of the image is returned.

Has_Palette

A named variable in which 1 is returned if a palette is present. Otherwise, 0 is returned.

Example

h = HDF_OPEN('myhdf.hdf') ; Open the file myhdf.hdf; .

HDF_DFR8_GETINFO, 'myhdf.hdf', width, height, has_palette
; Retrieve information about an image.

HELP, width, height, has_palette ; Print information about the returned variables.

IDL prints:

WIDTH LONG = 536

HEIGHT LONG = 412

HAS_PALETTE LONG = 1

HDF_CLOSE('myhdf.hdf') ; Close the HDF file.

For a more detailed example, see the file hdf_info.pro , located in the examples subdirectory of the main IDL directory.

See Also

HDF_DFR8_GETIMAGE , HDF_DFR8_NIMAGES , HDF_DFR8_READREF , HDF_DFR8_RESTART