comp.lang.idl-pvwave archive: archive » HDF_SD

Home » Public Forums » archive » HDF_SD_ADDDATA problem

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: HDF_SD_ADDDATA problem [message #60087 is a reply to message #59951]

Thu, 01 May 2008 19:05

adfraser
Messages: 9
Registered: April 2008

Junior Member

Hello again,

Good news: I've discovered a workaround! Inexplicably, if you use
getdata to get the data and adddata to add back the data BETWEEN THE
ONE SET OF HDF_SD_START and HDF_SD_END calls, then this seems to
"unlock" the SDS, meaning you can then use the above code (HDFeditSDS)
to write to the data as normal (by normal, I mean as if it were an
unsubsetted MODIS L1B file).

Here's the code:

========================================
FUNCTION HDFunlockSDS, filename, sdsname

sdfileid=hdf_sd_start(filename, /rdwr)

index = HDF_SD_NAMETOINDEX(sdFileID, sdsname)

thisSdsID = HDF_SD_SELECT(sdFileID, index)

HDF_SD_GETDATA, thisSdsID, sds

HDF_SD_AddData, thisSdsID, sds

HDF_SD_ENDACCESS, thisSdsID

hdf_sd_end, sdfileid

return, sds

END
======================================

Any thoughts, James or anyone else? I have no idea why this works, but
it does!

Cheers,
Alex.

Report message to a moderator

[Message index]

		HDF_SD_ADDDATA problem By: adfraser on Mon, 21 April 2008 16:24
		Re: HDF_SD_ADDDATA problem By: brodzik@nsidc.org on Thu, 24 April 2008 07:25
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Thu, 24 April 2008 06:00
		Re: HDF_SD_ADDDATA problem By: liamgumley on Fri, 25 April 2008 09:18
		Re: HDF_SD_ADDDATA problem By: adfraser on Sun, 27 April 2008 18:08
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Fri, 25 April 2008 09:15
		Re: HDF_SD_ADDDATA problem By: adfraser on Sun, 27 April 2008 18:05
		Re: HDF_SD_ADDDATA problem By: adfraser on Thu, 01 May 2008 19:05
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Wed, 30 April 2008 04:20
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Wed, 30 April 2008 04:13
		Re: HDF_SD_ADDDATA problem By: adfraser on Tue, 29 April 2008 23:43
		Re: HDF_SD_ADDDATA problem By: adfraser on Tue, 29 April 2008 22:57
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Mon, 28 April 2008 16:07
		Re: HDF_SD_ADDDATA problem By: jameskuyper on Sun, 27 April 2008 19:52

Previous Topic:	Re: IDL plotting query - how can I get rid of unwanted colour for a particular data value???
Next Topic:	Multiple draw widget events

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon Dec 01 16:02:58 PST 2025

Total time taken to generate the page: 1.28488 seconds