irisFetch does not support V7 SAC files

[lsunm]

I posted this issue on SAC Help and was told to make the issue known here.

In the words of one commenter: "Briefly, the code cannot handle V7 SAC files properly; if the version number is not 6, the code assumes it is just a byte-swapped SAC file. It does not recognize that V7 headers exist."

http://ds.iris.edu/message-center/thread/8336/#m-11223

Please help with this issue! What other options to I have in the meantime? Using sac2mat?

[lsunm]

rdsac works with NVHDR = 7

[chad-earthscope]

Thanks for the bug report @lsunm.

If you do not require the features of V7 SAC, one option is to use sac to convert the data to V6 format, or avoid converting to V7 in the first place.

Or you can use rdsac instead as you have found, although looking at that code:
https://www.mathworks.com/matlabcentral/fileexchange/46356-rdsac-and-mksac-read-and-write-sac-seismic-data-file
I do not see any check for a header version, so not sure how that is working.