MATLAB Timeseries Resample Error: Quality vector must be initialized.

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Ghazi Eltiti
Ghazi Eltiti 2018-10-12
评论： Ghazi Eltiti 2018-10-14
Hi there, I am trying to resample a timeseries on MATLAB using the following code:
load RainData;
RKraut = RainData.Krautheim.data;
TKraut = RainData.Krautheim.time;
OldTS = timeseries(RKraut,TKraut);
NewT = ceil (TKraut(1)):1/1440:floor(TKraut(end));
NewRKraut = resample(OldTS,NewT,'interpmethod','zoh');
Krautheim.data = NewRKraut.data;
Krautheim.time = NewRKraut.time;
if I do not specify the interpolation method, everything works fine, but once I specify interpolation method as 'zoh', 'phcip' or 'linear' I get this error.
Error using timeseries/resample (line 65) Quality vector must be initialized.
Error in KrautheimRainResampling (line 6) NewRKraut = resample(OldTS,NewT,'interpmethod','zoh');
I am not even sure what is meant by 'Quality vector', I checked online and couldn't find any useful related subjects. I am using MATLAB R2018b. Any help would be highly appreciated.
Thanks in advance!

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回答（1 个）

jonas
jonas 2018-10-12
编辑：jonas 2018-10-12
I suggest that you use a timetable and retime instead. I believe timetable offers more or less all the same utility as the timeseries function and more. Upload data if you need help adapting your code.
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jonas
jonas 2018-10-12
编辑：jonas 2018-10-12
That's new to me, personally I've never had to use anything other than linear interp. I don't know what the problem is but I can take a look if you upload the data or a sample of the data for which the error is reproduced.
If I had to guess, then I'd make sure that all your old time-steps are unique. Could be that you mess up the vector when you round.
Ghazi Eltiti
Ghazi Eltiti 2018-10-14
The data are unique, and the function works if I do not specify the method of interpolation (linear interpolation by default), however, I get this error even if I specify the method as linear. There is no need to upload the data since I found a work around. But thanks for the offering to help.

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