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Active Message Threads for February 2006
Howdy,
I recently put together a simple SAC to miniSEED converter (a bit of wheel
reinventing). My sac2mseed has some nice features: format and byte order
autodetection, autoscaling of floats to ints when needed. I had a few
questions regarding the format:
- Most SAC reading code out there works with version '6' of the header, how
common are other versions of the header, does 6 cover the vast majority?
- Autodetection of format tests the first 4 bytes in a file, if they're spaces
alphanum…
[more]
Replies
-
Re: SAC format questions - Arthur Snoke - 2006-02-22 21:52:04
Chad,
You are correct. Thanks.
Cheers,
Brian
Chad wrote:
>
> Hi Brian,
>
> I was throwing together a quick SAC to Mini-SEED converter and looked at
> your recent patch for detecting byte order from the SAC header (thanks).
> I think I see an error (see below), feel free to tell me I'm wrong.
>
> cheers,
> Chad
>
>> Index: src/dff/wrsac.c
>> ===================================================================
>> RCS file: /export/home/cvs/repository/SAC/src/dff/wrsac.c,v
> ...
>> + …
[more]
No replies
All,
I have created a patch for the read header / write header bug discovered
a while back. It effectively handles big and small endian files.
This patch determines the file's endianness and writes the appropriate
header. During a write header, this is the logic:
- Open file to be written (file must already exist)
- Read in Old Header
- Examine Version Number
- If version number between 1 and current version (6)
- Write header
- If version number not between 1 and current version (6)
…
[more]
Replies
-
Re: bug fix: read write header - Brian Savage - 2006-02-15 00:21:15