[SAC-HELP] dealing with big-endian and little-endian data with SAC and sacswap

[Brian Savage]

Derek,

This is the second request for this feature recently and it should not  
take much to add in this type of functionality. It will most likely be  
designed as an option you would need to turn on, but this should.  I  
will add this to my list of things to do.

Brian

On Oct 12, 2010, at 6:38 PM, Derek Schutt wrote:

> It's been a while since I worried about this, and I've screwed  
> things up a bit.
>
> I requested some data from the DMC, using Standing Order for Data  
> (SOD).   It is big-endian.   When I write a sac file on my x86  
> computer, the sac file seems to be in little-endian format (the  
> native format); however, when I just write headers to the original  
> sac file, the file stays in the big-endian format.
>
> I'd like all my data to be in one format, preferably the native,  
> little-endian, format.   I can use sacswap to change format, but it  
> seems to work indiscriminantly on files, swapping them even if they  
> are in the native format.
>
> So, I was wondering:
>    1) If there is any way to make sac write files in the same byte- 
> order that the file was read in
>    2) is there a more elegant way to work with sacswap, to get it to  
> only swap non-native byte order files.   I think the mac version of  
> sacswap does do this.
>
> I realize now I should have used the <littleEndian/> tag in my SOD  
> request, and it's actually not to hard to retrace my steps and run  
> sacswap on the files that need to be swapped.   But I can't help if  
> there is a more elegant way to do this...
>
> Thanks,
>
> Derek
>
> -- 
> --------------------
> Derek Schutt
> Assistant Professor
> Geosciences Department
> 309 Natural Resources Building
> Campus Delivery 1482
> Fort Collins, CO 80525-1482
> http://warnercnr.colostate.edu/~schutt/CSU_web/index.htm
> 970-491-5786
>
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