irisFetch.Traces() returns 204 error when requesting data that should be available.

[b-jancovich]

I am getting errors when making irisFetch.Traces() requests, using version '2.0.12', cloned from Git. My startDate and endDate values are set programmatically, and are generated with type "datetime". I am making the request as follows:

data = irisFetch.Traces('IM', 'H01W1', '--', 'EDH', chunk_start, chunk_end);

Here, "chunk_start" and "chunk_end" are 1x1 "datetime" arrays. This results in the following error:

edu.iris.dmc.service.NoDataFoundException: (204) No data found for: quality=M IM H01W1 -- EDH 2010-01-01T00:00:00.000 2010-01-02T00:00:00.000 at edu.iris.dmc.service.WaveformService.fetch(WaveformService.java:116) at edu.iris.dmc.service.WaveformService.fetch(WaveformService.java:239) at edu.iris.dmc.service.WaveformService.fetch(WaveformService.java:292) at edu.iris.dmc.extensions.fetch.TraceData.fetchTraces(TraceData.java:394) at edu.iris.dmc.extensions.fetch.TraceData.fetchTraces(TraceData.java:192) at edu.iris.dmc.extensions.fetch.TraceData.fetchTraces(TraceData.java:137) at edu.iris.dmc.extensions.fetch.TraceData.fetchTraces(TraceData.java:102)

According to this page, the data for the dates I am requesting are available.

I have tried specifying other values for "quality" but this does not prevent the error. I gave tried converting the 'datetime' arrays to strings, resulting in the following request: data = irisFetch.Traces('IM', 'H01W1', '--', 'EDH', '2010-01-01 00:00:00', '2010-01-02 00:00:00');

This results in an identical error. Any assistance would be most appreciated.

Thanks, Ben

[chad-earthscope]

Hi @b-jancovich

The data for that channel is not available at our data center for the time range you selected. You can check for data existence in a number of ways, for example in MDA (https://ds.iris.edu/mda/IM/H01W1/--/EDH/) there is a data availability indicator for the "IRIS DMC" data center (see attached image).

As you can see the earliest data available for that channel is 2014-12-08.

Another way to check for the availability of data is to use a data center's availablity service, for example: https://service.iris.edu/fdsnws/availability/1/extent?format=text&net=IM&sta=H01W1&cha=EDH&orderby=nslc_time_quality_samplerate&includerestricted=false&nodata=404

[b-jancovich]

Thanks Chad, I have already used the MDA to pull what I thought were available data dates, but it seems I misunderstood the “start” and “end” fields for the instrument to be the data availability dates. Thanks for your help.

Ben

From: Chad Trabant @.> Sent: Tuesday, May 9, 2023 1:40 AM To: iris-edu/irisFetch-matlab @.> Cc: Ben Jancovich @.>; Mention @.> Subject: Re: [iris-edu/irisFetch-matlab] irisFetch.Traces() returns 204 error when requesting data that should be available. (Issue #18)

You don't often get email from @.**@.>. Learn why this is importanthttps://aka.ms/LearnAboutSenderIdentification

Hi @b-jancovichhttps://github.com/b-jancovich

The data for that channel is not available at our data center for the time range you selected. You can check for data existence in a number of ways, for example in MDA (https://ds.iris.edu/mda/IM/H01W1/--/EDH/) there is a data availability indicator for the "IRIS DMC" data center (see attached image).

[Screenshot 2023-05-08 at 8 30 41 AM]https://user-images.githubusercontent.com/16736618/236865602-9a86b4be-8c09-45ba-a249-67357781b8ab.png

As you can see the earliest data available for that channel is 2014-12-08.

Another way to check for the availability of data is to use a data center's availablity service, for example: https://service.iris.edu/fdsnws/availability/1/extent?format=text&net=IM&sta=H01W1&cha=EDH&orderby=nslc_time_quality_samplerate&includerestricted=false&nodata=404

— Reply to this email directly, view it on GitHubhttps://github.com/iris-edu/irisFetch-matlab/issues/18#issuecomment-1538602977, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3XQIYCSL2UNGNMAOYPA5EDXFEHVLANCNFSM6AAAAAAXZNX32E. You are receiving this because you were mentioned.Message ID: @.**@.>>

[b-jancovich]

Hi Chad, Returns: Could please answer another question for me? irisFetch.Traces() is returning multiple traces for a single query, with start & end times that indicate discontinuities or missing data. Eg: chunk = irisFetch.Traces(‘IM’, “H01W1”, ‘—-', ‘EDH’, ‘2015-01-01 00:00:00.000000’, ‘2015-01-02 00:00:00.000000’);

Returns: Chunk = 1x4 struct with 21 fields: network station sampleCount startDate endDate 'IM' 'H01W1' 13182637 '2015-01-01 00:00:00.000' '2015-01-01 14:38:50.665' 'IM' 'H01W1' 360000 '2015-01-01 14:40:40.669' '2015-01-01 15:04:40.669' 'IM' 'H01W1' 310000 '2015-01-01 15:05:50.673' '2015-01-01 15:26:30.672' 'IM' 'H01W1' 7679814 '2015-01-01 15:28:00.676' '2015-01-01 23:59:59.999'

Is this to be expected of IM/CTBTO Hydrophone data?

Many thanks, Ben

From: Ben Jancovich Sent: Tuesday, May 9, 2023 7:12 AM To: iris-edu/irisFetch-matlab @.>; iris-edu/irisFetch-matlab @.> Cc: Mention @.***> Subject: RE: [iris-edu/irisFetch-matlab] irisFetch.Traces() returns 204 error when requesting data that should be available. (Issue #18)

Thanks Chad, I have already used the MDA to pull what I thought were available data dates, but it seems I misunderstood the “start” and “end” fields for the instrument to be the data availability dates. Thanks for your help.

Ben

From: Chad Trabant @.**@.>> Sent: Tuesday, May 9, 2023 1:40 AM To: iris-edu/irisFetch-matlab @.**@.>> Cc: Ben Jancovich @.**@.>>; Mention @.**@.>> Subject: Re: [iris-edu/irisFetch-matlab] irisFetch.Traces() returns 204 error when requesting data that should be available. (Issue #18)

You don't often get email from @.**@.>. Learn why this is importanthttps://aka.ms/LearnAboutSenderIdentification

Hi @b-jancovichhttps://github.com/b-jancovich

The data for that channel is not available at our data center for the time range you selected. You can check for data existence in a number of ways, for example in MDA (https://ds.iris.edu/mda/IM/H01W1/--/EDH/) there is a data availability indicator for the "IRIS DMC" data center (see attached image).

[Screenshot 2023-05-08 at 8 30 41 AM]https://user-images.githubusercontent.com/16736618/236865602-9a86b4be-8c09-45ba-a249-67357781b8ab.png

As you can see the earliest data available for that channel is 2014-12-08.

Another way to check for the availability of data is to use a data center's availablity service, for example: https://service.iris.edu/fdsnws/availability/1/extent?format=text&net=IM&sta=H01W1&cha=EDH&orderby=nslc_time_quality_samplerate&includerestricted=false&nodata=404

— Reply to this email directly, view it on GitHubhttps://github.com/iris-edu/irisFetch-matlab/issues/18#issuecomment-1538602977, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3XQIYCSL2UNGNMAOYPA5EDXFEHVLANCNFSM6AAAAAAXZNX32E. You are receiving this because you were mentioned.Message ID: @.**@.>>