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

[Shahar Barak]

Seems to be working fine. Thank you for being so quick about it!

Shahar

On Thu, Jul 23, 2015 at 2:26 PM, Aparna Bhaskaran <
aparna.bhaskaran01 at gmail.com> wrote:

> Hi Shahar,
>
> We have added a fix for the endian issue. All miniseed from the FDSN SCEDC
> dataselect webservice should be big endian now. Could you try it out and
> let us know what you find?
>
> regards,
> Aparna
>
> On Thu, Jul 23, 2015 at 9:01 AM, Ellen Yu <eyu at gps.caltech.edu> wrote:
>
>> 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]
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>>
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