MATLAB: How can I change series of data into time series data

dataplottimetime series

I have data series that ranges from 7.334894375000000e+05 to 7.340144791666666e+05 which comprises 24273 data. The data covers 525 days which is recorded approximately 0.46 hrs. I want to plot this data as time series of month and day. can you help me with that? The commencement day of recording is 15-03-2008. How can I edit the plot so that I will have mm/dd on the x-axis?

Any help is appreciated.

Best Answer

You can use the datestr function to convert between a numerical representation and a date representation.

To find the first date from 15-03-2008, you can use datenum to determine the corresponding number.

To convert the data to match a 0.46 hour sample time, you could try the linspace command, assuming your data is evenly distributed.

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MATLAB: How to retime time series data every 15 minutes, or if it is not possible, to filter minutely data to 15-minutes data

To retime your data in every 15 minutes, first you should convert your data into 'timetable,' next create datetime vector (= resampling timing) and finally apply retime function. Here is an example.

load('rainanalysisdata.mat');
% Convert to timetable
rainanalysis.DatumUhrzeit = datetime(rainanalysis.DatumUhrzeit);
rainanalysis = table2timetable(rainanalysis);
% Create time vector (15 min duration)
t = rainanalysis.DatumUhrzeit(1);
startTime = datetime(t.Year,t.Month,t.Day,t.Hour,0,0);
time = (startTime:minutes(15):rainanalysis.DatumUhrzeit(end))';
% Resampling
rainanalysis2 = retime(rainanalysis,time,'linear');

MATLAB: How to convert data in UTC to a specific local time

UTC-5 is likely NOT your local time zone, since most locales shift for daylight saving. That's a detail many people forget.

You may be starting from timestamps in the form of text. If you use datetime, converting from UTC to local time is as easy as setting the TimeZone property, and datetime automatically accounts for daylight saving changes:

>> d = datetime({'25-Feb-2016 13:20:44' '25-Aug-2016 13:20:44'},'TimeZone','UTC')
d = 
   25-Feb-2016 13:20:44   25-Aug-2016 13:20:44
>> d.TimeZone = 'America/New_York'
d = 
   25-Feb-2016 08:20:44   25-Aug-2016 09:20:44

Best Answer

Related Solutions

MATLAB: How to retime time series data every 15 minutes, or if it is not possible, to filter minutely data to 15-minutes data

MATLAB: How to convert data in UTC to a specific local time

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