timerange for a given month during different years in a set of data

Hi,

I am quite new to MATLAB and I am having some trouble making my code to work. I would appreciate very much your answers.

I have a set of data (data.mat) which contains 7 colums of data, being the first one the date (Jan 2010 to Dec 2019).

I would like to extract the data by months (for example all January months along 2010 and 2019).

I have used this solution to do it manually (I only add for 2 years in the example below)

e= table2timetable(data)
S = timerange ('01/01/2010','02/01/2010');
TT =e (S,:);
S1 = timerange ('01/01/2011','02/01/2011');
TT1=e(S1,:)

Jan = [TT;TT1];

I would like to make a loop over the data to just input years and month. Note that wm01ALL1 is my table with 2010 to 2019 data (data)

years = [2010 2011 2012 2013 2014 2015 2016 2017 2018 2019];
month = 6;

TTa shows the data for June of the last year in the loop instead of the stored data for each year.

[Guillaume]

"I would like to extract the data by months (for example all January months along 2010 and 2019)."

To do what?

If you want to calculate some monthly statistics, this can be done in just one line of code (for all the months at once).

timerange is not suitable for non-contiguous range. But it's easy enough to discretise a datetime vector by month if that's what you really need.

But again, what are you trying to do?

edit: Oh and please don't post screenshots of code. Paste the code so that we can in turn paste it into matlab.

Also, datetime arrays are very easy to work with. You should never have a need to use the outdated datestr and datenum. Your whole |timerange construction is way too complicated:

start = datetime(year1, month1, day1); 
final = datetime(yeat2, month2, day2);
Sa = timerange(start, final);

[Ana Bermejo Jimenez]

Thank you for your answer Guillaume.

I have data for wind speed and direction, and I need to plot monthly wind roses with it.

Date Wind Speed _10m Wind Direction

from 1 Jan 2010

to 31 Dec 2019

10 min interval

I hope this makes sense. Otherwise I can attach a file.

[Akira Agata]

It's not clear for me what you want to do in your task.

But anyway, if you want to extract specific month ( e.g January ) over many years, you can simply do that by following way.

% Extract January data from a timetable TT
idx = TT.Time.Month == 1;
TT_Jan = TT(idx,:);

[Ana Bermejo Jimenez]

Thank You, that is exactky what I needed.