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How to loop through variable names and to save them on one file?

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Hi, I have written this loop which works fine, however I want to perform this for certain variables in the data_measured csv file. Currently, this loop performs well for the WD__Avr variable. Hence, I would like to define the variable = x before the loop and just replace it with "t.'variable" within the loop. Any suggestion?
Thanks for your help!
for i = 1:height(unique(data_timesteps.Date))
ind_dt = find(data_timesteps.Date == dates(i));
t = table(data_timesteps.Time(ind_dt), zeros(sum(data_timesteps.Date == dates(i)),1));
header={'Time','WD_Avr'};
t.Properties.VariableNames = header;
for j = 1:(sum(data_timesteps.Date == dates(i)))
if j == 1
ind_time = find(data_measured.Time <= data_timesteps.Time(j) & data_measured.Date == dates(i));
ind_time = ind_time(end-10+1:end);
x = mean(data_measured.WD__Avr(ind_time));
t.WD_Avr(j) = x;
data_timesteps.WD(ind_dt) = t.WD_Avr;
else
ind_time = find(data_measured.Time <= data_timesteps.Time(j) & data_measured.Time > data_timesteps.Time(j-1) & data_measured.Date == dates(i));
x = mean(data_measured.WD__Avr(ind_time));
t.WD_Avr(j) = x;
data_timesteps.WD(ind_dt) = t.WD_Avr;
end
end
end

Accepted Answer

Jeff Miller
Jeff Miller on 5 Aug 2021
You can use strings for variable names like this:
a = 'WD__Avr';
for....
[...]
x = mean(data_measured.(a)(ind_time)); % note parentheses around 'a'
[...]
...end
You might make a cell array with the different strings you want for 'a' and then loop through assigned each one to 'a' to process the different variables.

More Answers (1)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 4 Aug 2021
It looks that will require another loop outside the main loop, something like this one, e.g.:
for i = 1:height(unique(data_timesteps.Date))
ind_dt = find(data_timesteps.Date == dates(i));
x.Time(i) = data_timesteps.Time(ind_dt);
end
  1 Comment
Judith Ewald
Judith Ewald on 4 Aug 2021
Thank you very much. Unfortunately, I cannot see how this solves my issue. Actually I only want to name the table.variable in such a manner that 'variable' changes through the loops.
I have tried different versions of:
a = WD__Avr
for....
[...]
x = mean(data_measured.a(ind_time));
[...]
...end
which does not assign work. This might be quite blatant; I am sorry - quite new to matlab.
Thanks!

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