how to accumulate 10 minute values to daily values

I have found a piece of code which i adapted to get the accumulated daily values of actual Evapotranspiration (act_ET)

for a unknown reason i get a double array of the correct size lenght for act_ET and for act_ET_daily i only get one single value.

This alone would be ok, but the values of act_ET seem to be far to low.

Where is the mistake or is there even an easier way to get the cumulated daily value?

Looking forward to help from somebody.

Thanks in advance.

Best regards,

Arthur Leon

act_ET = table2array(T(: , 4));

% make daily values of act_ET
t = 0:numel(act_ET)-1 ; % time stamps
interval = 144 ;
ix = 1+floor((t-t(1))/interval);
act_ET_daily = accumarray(ix(:),act_ET(:));

[Adam Danz]

> for act_ET_daily i only get one single value

After running the code with your data I get,

>> size(act_ET_daily )
ans =
   101   1
>> size(act_ET)
ans =
       14544   1

> the values of act_ET seem to be far to low

Those values are merely loaded into the workspace from your mat files so we have no idea where they come from.

>> min(act_ET), max(act_ET)
ans =
      -0.0548
ans =
      0.64635

[Arthur Leon]

i acutally found my error.

I called act_ET in a way that only the values for one speciific tme at a day were loaded.

Thanks for trying to solve my problem.

Answer 1

[Seth Furman]

Check out retime.

https://www.mathworks.com/help/matlab/ref/timetable.retime.html