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HDF SDS array access in IDL [message #13178]

Mon, 26 October 1998 00:00

William Clodius
Messages: 30
Registered: December 1996

Member

I am confused by some comments in the IDL documentation for HDF file
access e.g., the documentation for HDF_SD_GETDATA

"The HDF_SD_GETDATA procedure retrieves a hyperslab of values from an SD
dataset. By default, the retrieved data is transposed from HDF's column
order format into IDL's row order which is more efficient in IDL. To
retrieve the dataset without this transposition, set the NOREVERSE
keyword."

I believe that IDL, like Fortran, is column major and transposing the
data would be exactly the wrong thing to do for the default. Am I
mistaken or has a misguided C programmer been at work at RSI?

--

William B. Clodius Phone: (505)-665-9370
Los Alamos Nat. Lab., NIS-2 FAX: (505)-667-3815
PO Box 1663, MS-C323 Group office: (505)-667-5776
Los Alamos, NM 87545 Email: wclodius@lanl.gov

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[Message index]

		HDF SDS array access in IDL By: William Clodius on Mon, 26 October 1998 00:00
		Re: HDF SDS array access in IDL By: thompson on Thu, 29 October 1998 00:00
		Re: HDF SDS array access in IDL By: davidf on Thu, 29 October 1998 00:00
		Re: HDF SDS array access in IDL By: Liam Gumley on Thu, 29 October 1998 00:00
		Re: HDF SDS array access in IDL By: Dr. G. Scott Lett on Thu, 29 October 1998 00:00
		Re: HDF SDS array access in IDL By: davidf on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: William Clodius on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: Dr. G. Scott Lett on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: davidf on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: thompson on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: Dr. G. Scott Lett on Wed, 28 October 1998 00:00
		Re: HDF SDS array access in IDL By: davidf on Tue, 27 October 1998 00:00

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