[webservices] empty loc code in fdsnws/station query
Pete Davis
pdavis at ucsd.edu
Thu Jun 25 11:26:01 PDT 2015
Hi Rob,
Regarding the II data repair, that effected data recorded in 1993 and later, so that action could not be the issue here.
Pete Davis
> On Jun 25, 2015, at 8:11 PM, Robert Casey <rob at iris.washington.edu> wrote:
>
>
> Hi Anthony-
>
> I checked the wayback machine to find a time when II would have transitioned their data from using an empty location code. I found an announcement from Rick back in Dec 2001 regarding IRIS/IDA resending their data to correct for mistakes in the MK7 datalogger. At that point, they were supposed to re-send data going back to 1993 containing numeric location codes. Since you are looking at 1992 data, I am not sure when that got shifted in our archives, so what you received may indeed be pretty old. Perhaps Rick can remember what the II resend history looked like.
>
> Data is a constantly shifting medium here. Probably good for you to get a fresh copy of this event from WILBER III.
>
>
> -RobC
>
>
>> On Jun 25, 2015, at 10:50 AM, Chad Trabant <chad at iris.washington.edu <mailto:chad at iris.washington.edu>> wrote:
>>
>>
>> Hi Anthony,
>>
>> The location code in that data is definitely empty. I did a quick check and it is exactly the same waveform as the II.AAK data the DMC is serving with location ID '00'.
>>
>> I have no idea what happened to that data such that the location ID is not present in the copy you have. The data in the archive was written pre-2011 and not modified since and such a change is not something the DMC would do during delivery. Any chance your copy has been modified in the last 4 years?
>>
>> Chad
>>
>>> On Jun 21, 2015, at 12:13 PM, Anthony Lomax <alomax at free.fr <mailto:alomax at free.fr>> wrote:
>>>
>>> Hi Chad,
>>>
>>> Thanks for the information. I am reading an mseed file downloaded from IRIS Wilbur in 2011 or earlier, and it appears in my software that the location code is empty:
>>> https://dl.dropboxusercontent.com/u/35233023/Flores_Indonesia_1992.mseed <https://dl.dropboxusercontent.com/u/35233023/Flores_Indonesia_1992.mseed>
>>>
>>> ???
>>>
>>> Thanks!
>>>
>>> Anthony
>>>
>>> PS - I have added a work around to this in my code, so you do not need to reply again on the weekend!
>>>
>>> On 21/06/2015 11:43, Chad Trabant wrote:
>>>>
>>>> Hi Anthony,
>>>>
>>>> The 204 means "no matching data selected". If you would like to see the error returned in your web browser try adding the parameter-value "nodata=404":
>>>>
>>>> http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station&nodata=404 <http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station&nodata=404>
>>>>
>>>> If you submit the query with channel level details:
>>>> http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=channel&nodata=404 <http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=channel&nodata=404>
>>>>
>>>> you'll see that there are no channels with empty location IDs.
>>>>
>>>> Chad
>>>>
>>>>> On Jun 21, 2015, at 10:54 AM, Anthony Lomax <alomax at free.fr <mailto:alomax at free.fr>> wrote:
>>>>>
>>>>> In fact, what is returned is:
>>>>> Query: http://service.iris.edu/fdsnws/station/1/query?net=II&sta=TLY&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=chan <http://service.iris.edu/fdsnws/station/1/query?net=II&sta=TLY&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=chan>
>>>>> HTTP/1.1 204 No Content
>>>>>
>>>>> ???
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Anthony
>>>>>
>>>>> On 21/06/2015 10:50, Anthony Lomax wrote:
>>>>>> Hi,
>>>>>>
>>>>>> The following gives nothing in my browser (no error, no change of page...):
>>>>>> http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station <http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&loc=--&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station>
>>>>>>
>>>>>> If I remove the loc=--, it works fine:
>>>>>> http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station <http://service.iris.edu/fdsnws/station/1/query?net=II&sta=AAK&cha=BHZ&starttime=1992-12-12&endtime=1992-12-12&level=station>
>>>>>>
>>>>>> Doc says:
>>>>>> loc[ation] 00 Select one or more SEED location identifier. Use -- for “Blank” location IDs (ID’s containing 2 spaces). Accepts wildcards and lists. Accepts exclusions.
>>>>>>
>>>>>> Am I missing something?
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Anthony Lomax
>>>>>>
>>>>>> --
>>>>>> Sent from my iClayTablet
>>>>>>
>>>>>>
>>>>>> Anthony Lomax
>>>>>> 161 Allée du Micocoulier, 06370 Mouans-Sartoux, France
>>>>>> tel: +33 (0)4 93 75 25 02 e-mail: anthony at alomax.net <mailto:anthony at alomax.net> web: http://www.alomax.net <http://www.alomax.net/>
>>>>>>
>>>>>> Twitter: @ALomaxNet <http://twitter.com/ALomaxNet>
>>>>>> Science & Special Topics: http://www.alomax.net/science <http://www.alomax.net/science>
>>>>>> Software: http://www.alomax.net/software <http://www.alomax.net/software> - updates: https://twitter.com/ALomaxNet <https://twitter.com/ALomaxNet>
>>>>>
>>>>> --
>>>>> Sent from my iClayTablet
>>>>>
>>>>>
>>>>> Anthony Lomax
>>>>> 161 Allée du Micocoulier, 06370 Mouans-Sartoux, France
>>>>> tel: +33 (0)4 93 75 25 02 e-mail: anthony at alomax.net <mailto:anthony at alomax.net> web: http://www.alomax.net <http://www.alomax.net/>
>>>>>
>>>>> Twitter: @ALomaxNet <http://twitter.com/ALomaxNet>
>>>>> Science & Special Topics: http://www.alomax.net/science <http://www.alomax.net/science>
>>>>> Software: http://www.alomax.net/software <http://www.alomax.net/software> - updates: https://twitter.com/ALomaxNet <https://twitter.com/ALomaxNet>
>>>>> _______________________________________________
>>>>> webservices mailing list
>>>>> webservices at iris.washington.edu <mailto:webservices at iris.washington.edu>
>>>>> http://www.iris.washington.edu/mailman/listinfo/webservices <http://www.iris.washington.edu/mailman/listinfo/webservices>
>>>>
>>>>
>>>>
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>>>
>>> --
>>> Sent from my iClayTablet
>>>
>>>
>>> Anthony Lomax
>>> 161 Allée du Micocoulier, 06370 Mouans-Sartoux, France
>>> tel: +33 (0)4 93 75 25 02 e-mail: anthony at alomax.net <mailto:anthony at alomax.net> web: http://www.alomax.net <http://www.alomax.net/>
>>>
>>> Twitter: @ALomaxNet <http://twitter.com/ALomaxNet>
>>> Science & Special Topics: http://www.alomax.net/science <http://www.alomax.net/science>
>>> Software: http://www.alomax.net/software <http://www.alomax.net/software> - updates: https://twitter.com/ALomaxNet <https://twitter.com/ALomaxNet>
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>>
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