[webservices] irisFetch and SCEC data center - problem with data conversion?

[Ellen Yu]

Thanks Shahar and Chad for making us aware of the issue.  We are working on
a fix.


Ellen Yu

On Wed, Jul 22, 2015 at 3:25 PM, Chad Trabant <chad at iris.washington.edu>
wrote:

>
> Hi Shahar,
>
> The miniSEED returned from the SDEDC's service is encoded in little-endian
> byte order using Steim-1 compression.  This is not allowed by the SEED
> standard.  While some miniSEED software will read such data, invalid as it
> is, the IRIS-WS Java library (used by irisFetch.m) does not support it.
>
> I suggest taking this issue up with SCEDC.
>
> regards,
> Chad
>
> On Jul 22, 2015, at 3:03 PM, Shahar Barak <shaharb at stanford.edu> wrote:
>
> Hi,
>
> Data seems to be corrupted when using irisFetch and the SCEC data center.
> Below is a plot of the same data downloaded via irisFetch from the IRIS
> data center (top) and from the SCEC data center (bottom) (script attached).
> The data looks fine and seems visually identical when I download the mseed
> files directly via the web service (not using irisFetch):
>
> http://service.iris.edu/fdsnws/dataselect/1/query?net=CI&sta=BAR&cha=BHZ&loc=--&start=2013-03-10T22:51:50.000&end=2013-03-10T23:51:50.000
>
> http://service.scedc.caltech.edu/fdsnws/dataselect/1/query?net=CI&sta=BAR&cha=BHZ&loc=--&start=2013-03-10T22:51:50.000&end=2013-03-10T23:51:50.000
>
> Help anyone? Did I do something wrong?
>
> Thanks!
>
> Shahar
>
> [image: Inline image 1]
> <SB_testFetch.m>_______________________________________________
> webservices mailing list
> webservices at iris.washington.edu
> http://www.iris.washington.edu/mailman/listinfo/webservices
>
>
>
> _______________________________________________
> webservices mailing list
> webservices at iris.washington.edu
> http://www.iris.washington.edu/mailman/listinfo/webservices
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.iris.washington.edu/pipermail/webservices/attachments/20150723/841fc129/attachment.html>