<div dir="ltr">Hi, Chad.<div><br></div><div>Maybe "block" is the wrong term, sorry if it was confusing. </div><div><br></div><div>I assemble a post request containing 100 lines. In general, each line represents one channel of broadband data for one station for one day, from 00:00:00 to 23:59:59.9999. </div>
<div><br></div><div>My expectation was to get back a miniseed file containing 100 one-day traces. Instead, contiguous traces are combined so I get some lesser number of traces, many of which are longer than one day. I am not in principle opposed to this behavior, but I can envision times when it may cause problems, e.g., if I have some processing that has limits on the length of the trace to which it can be applied. It seems to me that optimum behavior would be a flag set by the user controlling whether you combine traces or not.</div>
<div><br></div><div>Example: A request containing the following POST data is asking for 100 days of data. It returns 27 traces of varying length.</div><div><br></div><div>POST text:</div><div><div>quality=B</div><div>TA G06A -- BHE 2008-03-15T00:00:00 2008-03-15T23:59:59.9999</div>
<div>TA G06A -- BHE 2008-03-14T00:00:00 2008-03-14T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-13T00:00:00 2008-03-13T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-12T00:00:00 2008-03-12T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-11T00:00:00 2008-03-11T23:59:59.9999</div>
<div>TA G06A -- BHE 2008-03-10T00:00:00 2008-03-10T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-09T00:00:00 2008-03-09T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-08T00:00:00 2008-03-08T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-13T00:00:00 2008-03-13T23:59:59.9999</div>
<div>TA F10A -- BHN 2008-03-12T00:00:00 2008-03-12T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-11T00:00:00 2008-03-11T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-10T00:00:00 2008-03-10T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-09T00:00:00 2008-03-09T23:59:59.9999</div>
<div>TA F10A -- BHN 2008-03-08T00:00:00 2008-03-08T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-07T00:00:00 2008-03-07T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-06T00:00:00 2008-03-06T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-05T00:00:00 2008-03-05T23:59:59.9999</div>
<div>TA F10A -- BHN 2008-03-04T00:00:00 2008-03-04T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-03T00:00:00 2008-03-03T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-02T00:00:00 2008-03-02T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-01T10:23:45 2008-03-01T23:59:59.9999</div>
<div>TA G06A -- BHZ 2008-03-20T00:00:00 2008-03-20T22:22:22.9999</div><div>TA G06A -- BHZ 2008-03-19T00:00:00 2008-03-19T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-18T00:00:00 2008-03-18T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-17T00:00:00 2008-03-17T23:59:59.9999</div>
<div>TA G06A -- BHZ 2008-03-16T00:00:00 2008-03-16T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-15T00:00:00 2008-03-15T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-14T00:00:00 2008-03-14T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-13T00:00:00 2008-03-13T23:59:59.9999</div>
<div>TA G06A -- BHZ 2008-03-12T00:00:00 2008-03-12T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-11T00:00:00 2008-03-11T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-10T00:00:00 2008-03-10T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-09T00:00:00 2008-03-09T23:59:59.9999</div>
<div>TA G06A -- BHZ 2008-03-08T00:00:00 2008-03-08T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-07T00:00:00 2008-03-07T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-06T00:00:00 2008-03-06T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-05T00:00:00 2008-03-05T23:59:59.9999</div>
<div>TA G06A -- BHZ 2008-03-04T00:00:00 2008-03-04T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-03T00:00:00 2008-03-03T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-02T00:00:00 2008-03-02T23:59:59.9999</div><div>TA G06A -- BHZ 2008-03-01T10:23:45 2008-03-01T23:59:59.9999</div>
<div>TA F18A -- BHN 2008-03-20T00:00:00 2008-03-20T22:22:22.9999</div><div>TA F18A -- BHN 2008-03-19T00:00:00 2008-03-19T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-18T00:00:00 2008-03-18T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-17T00:00:00 2008-03-17T23:59:59.9999</div>
<div>TA F18A -- BHN 2008-03-16T00:00:00 2008-03-16T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-15T00:00:00 2008-03-15T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-14T00:00:00 2008-03-14T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-13T00:00:00 2008-03-13T23:59:59.9999</div>
<div>TA F18A -- BHN 2008-03-12T00:00:00 2008-03-12T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-11T00:00:00 2008-03-11T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-10T00:00:00 2008-03-10T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-09T00:00:00 2008-03-09T23:59:59.9999</div>
<div>TA F18A -- BHN 2008-03-08T00:00:00 2008-03-08T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-07T00:00:00 2008-03-07T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-06T00:00:00 2008-03-06T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-05T00:00:00 2008-03-05T23:59:59.9999</div>
<div>TA F18A -- BHN 2008-03-04T00:00:00 2008-03-04T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-03T00:00:00 2008-03-03T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-02T00:00:00 2008-03-02T23:59:59.9999</div><div>TA F18A -- BHN 2008-03-01T10:23:45 2008-03-01T23:59:59.9999</div>
<div>TA G06A -- BHE 2008-03-20T00:00:00 2008-03-20T22:22:22.9999</div><div>TA G06A -- BHE 2008-03-19T00:00:00 2008-03-19T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-18T00:00:00 2008-03-18T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-17T00:00:00 2008-03-17T23:59:59.9999</div>
<div>TA G06A -- BHE 2008-03-16T00:00:00 2008-03-16T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-07T00:00:00 2008-03-07T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-06T00:00:00 2008-03-06T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-05T00:00:00 2008-03-05T23:59:59.9999</div>
<div>TA G06A -- BHE 2008-03-04T00:00:00 2008-03-04T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-03T00:00:00 2008-03-03T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-02T00:00:00 2008-03-02T23:59:59.9999</div><div>TA G06A -- BHE 2008-03-01T10:23:45 2008-03-01T23:59:59.9999</div>
<div>TA G16A -- BHZ 2008-03-20T00:00:00 2008-03-20T22:22:22.9999</div><div>TA G16A -- BHZ 2008-03-19T00:00:00 2008-03-19T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-18T00:00:00 2008-03-18T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-17T00:00:00 2008-03-17T23:59:59.9999</div>
<div>TA G16A -- BHZ 2008-03-16T00:00:00 2008-03-16T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-15T00:00:00 2008-03-15T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-14T00:00:00 2008-03-14T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-13T00:00:00 2008-03-13T23:59:59.9999</div>
<div>TA G16A -- BHZ 2008-03-12T00:00:00 2008-03-12T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-11T00:00:00 2008-03-11T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-10T00:00:00 2008-03-10T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-09T00:00:00 2008-03-09T23:59:59.9999</div>
<div>TA G16A -- BHZ 2008-03-08T00:00:00 2008-03-08T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-07T00:00:00 2008-03-07T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-06T00:00:00 2008-03-06T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-05T00:00:00 2008-03-05T23:59:59.9999</div>
<div>TA G16A -- BHZ 2008-03-04T00:00:00 2008-03-04T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-03T00:00:00 2008-03-03T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-02T00:00:00 2008-03-02T23:59:59.9999</div><div>TA G16A -- BHZ 2008-03-01T10:23:45 2008-03-01T23:59:59.9999</div>
<div>TA F10A -- BHN 2008-03-20T00:00:00 2008-03-20T22:22:22.9999</div><div>TA F10A -- BHN 2008-03-19T00:00:00 2008-03-19T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-18T00:00:00 2008-03-18T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-17T00:00:00 2008-03-17T23:59:59.9999</div>
<div>TA F10A -- BHN 2008-03-16T00:00:00 2008-03-16T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-15T00:00:00 2008-03-15T23:59:59.9999</div><div>TA F10A -- BHN 2008-03-14T00:00:00 2008-03-14T23:59:59.9999</div></div><div>
<br></div><div class="gmail_extra"><div>Thanks!</div><div><br></div><div> -- John</div>
<br><br><div class="gmail_quote">On Thu, Jul 10, 2014 at 7:08 PM, Chad Trabant <span dir="ltr"><<a href="mailto:chad@iris.washington.edu" target="_blank">chad@iris.washington.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
Hi John,<br>
<br>
Can you provide a bit more detail about what you mean by getting the data back in blocks? In a nutshell, if the data is continuous in the archive, what you get should be continuous as long as you have requested continuous segments.<br>
<br>
In the archive, the internal blocking of the miniSEED data (referred to as records) are sometimes truncated at UTC day boundaries and other times there are records that cross the UTC day boundaries. For the TA data in particular, the R quality data that arrived in real time generally does not include records that cross the day boundaries (it has been cut to perfectly fit within days). But the Q quality data (a preferred copy) that arrives many months after real time does have records that cross day boundaries. On top of this, by default the dataselect service will trim the data requested to the time window specified by the user.<br>
<br>
I think if you can clarify what you are mean by blocking and perhaps provide some example requests we might be able to give you a better answer.<br>
<span class=""><font color="#888888"><br>
Chad<br>
</font></span><div class="im"><br>
On Jun 30, 2014, at 4:34 PM, John D. West <<a href="mailto:john.d.west@asu.edu">john.d.west@asu.edu</a>> wrote:<br>
<br>
</div><div class=""><div class="h5">> Hi.<br>
><br>
> I'm requesting continuous broadband data from (mostly) TA stations using the POST usage of the dataselect web service.<br>
><br>
> When I request multiple successive one-day blocks in the same POST request, I sometimes get the data back in 1-day blocks and sometimes it is combined into longer multi-day blocks.<br>
><br>
> What controls this behavior? Is it possible to force the data to be returned in single-day traces without resorting to sending multiple individual requests, one per day?<br>
><br>
> Thanks!<br>
> -- John<br>
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