How to delete from timeseries ?

Hello Everyone,

I am not really good at matlab and I am dealing with a time series data. The times series format is dd/mm/yyyy, I have attached a picture of the format.

My time series ranges from 1949 to 2017, my problem is if I want to delete a specific year in this time series, lets say 1949 along with data that comes with it...How do remove it from my time series?

I tried a bunch of time series commands such as delsample...but it didn't work. I don't know how to get about this.

If more information is needed please let me know,

Thank you.

Answer 1

[Walter Roberson]

Assuming your data is in variable ts, and using the example of wanting to delete multiple years:

mask = ~ismember(year(ts.Time), [1949, 1950]);
new_ts = getsamples(ts, mask);

[John Doe]

It's not working :/ it still gives me the same data ranging from 1949 to 2017

[Walter Roberson]

It worked on the random data I created to test with. Perhaps you could attach some of your time series data for us to test against.

[John Doe]

I am very sorry for the late reply.

I have attached the data that I am turning into a time series and below is the code:

ActualDays= 24564;

NHours = 24; 

%%%Creating a time series

ts = timeseries(RAINVEC,1:ActualDays*NHours);

ts.Name = 'Hourly Rainfall [inch]';
ts.TimeInfo.Units = 'hours';
ts.TimeInfo.StartDate = datestr(dateaq(1));     % Set start date.
ts.TimeInfo.Format = 'mmm dd, yy';       % Set format for display on x-axis.

ts.Time = ts.Time - ts.Time(1);        % Express time relative to the start date.

[Walter Roberson]

If you want to be able to select by particular year, you should avoid doing the

ts.Time = ts.Time - ts.Time(1)

line.

[John Doe]

I tried running what you suggested avoiding that line but it still doesn't work for some reason :/

[Walter Roberson]

Year = year(ts.Time/24 + datenum(ts.TimeInfo.StartDate));
mask = ~ismember(Year, 1949);
new_ts = getsamples(ts, mask);

[John Doe]

Thank You!! This works!

But what was my problem?