Timeseries-object with daylight saving time

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Gregor
Gregor 2012-10-11
评论： Gregor 2014-5-26
Hello,
i use a timeseries-object whose Time-vector consists of serial-date-numbers. At the end of the daylight saving time we have the hour 02:00 twice (in the CEST timezone). To ensure unique datenumbers, i added a very small value to the second hour 02:00.
As i have only hourly values, there's no problem. The second hour 02:00 is ordered directly behind the first one. But if i have half ours, the ordering within the timeseries-object is wrong and the values are displayed in the order 02:00, 02:00_2, 02:30, 02:30_2 instead of 02:00, 02:30, 02:00_2, 02:30_2.
Is there a chance that the timeseries doesn't automatically orders the time-values if i insert them?
greets

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Clément
Clément 2014-5-23
编辑：Clément 2014-5-23
Hi,
I would suggest to convert you Time-vector to UTC by removing 1 hour or 2 depending on the year period. For your future captures, you can use another function to replace clock() or now() :
function [t] = nowUTC()
t = java.lang.System.currentTimeMillis / 8.64e7 + datenum(1970, 1, 1);
This is java-based and returns UTC time, that will never overlap.
Clement
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Gregor
Gregor 2014-5-26
Hi,
thank you for your answer. As this Topic lasts for such a Long time I already found a quite good solution. I store the time data within a timeseries object in CET (central european time) without summer time transitions.

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