Add '_max' to odd variable names and '_min' to even ones.

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Usune Elizondo
Usune Elizondo 2021-9-22
评论： Usune Elizondo 2021-9-22
I have a table where just even variables have a name, the rest (odd) have automatic name set by Matlab.
Something like this:
I want to have Var1 = t_max and t = t_min, then Var3 = ang_azi_max and ang_azi = ang_azi_min.
Hope someone can help ;)

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采纳的回答

Stephen23
Stephen23 2021-9-22
Ran in:
T = array2table(rand(5,8),'VariableNames',{'Var1','t','Var3','ang_azi','Var5','vel_azi','Var7','acc_azi'})
T = 5×8 table
Var1 t Var3 ang_azi Var5 vel_azi Var7 acc_azi _______ _______ _________ _______ _______ _______ _______ _______ 0.64569 0.92867 0.0076932 0.65038 0.92731 0.53037 0.45407 0.55135 0.94421 0.22754 0.50774 0.82564 0.97646 0.69373 0.55652 0.26508 0.83117 0.69494 0.93597 0.35117 0.89839 0.7037 0.9437 0.52426 0.8657 0.26734 0.017575 0.80891 0.79093 0.22237 0.93816 0.57082 0.79332 0.75431 0.40472 0.97708 0.26331 0.52194 0.94611 0.63532
T.Properties.VariableNames(1:2:end) = strcat(T.Properties.VariableNames(2:2:end),'_max');
T.Properties.VariableNames(2:2:end) = strcat(T.Properties.VariableNames(2:2:end),'_min')
T = 5×8 table
t_max t_min ang_azi_max ang_azi_min vel_azi_max vel_azi_min acc_azi_max acc_azi_min _______ _______ ___________ ___________ ___________ ___________ ___________ ___________ 0.64569 0.92867 0.0076932 0.65038 0.92731 0.53037 0.45407 0.55135 0.94421 0.22754 0.50774 0.82564 0.97646 0.69373 0.55652 0.26508 0.83117 0.69494 0.93597 0.35117 0.89839 0.7037 0.9437 0.52426 0.8657 0.26734 0.017575 0.80891 0.79093 0.22237 0.93816 0.57082 0.79332 0.75431 0.40472 0.97708 0.26331 0.52194 0.94611 0.63532

更多回答（1 个）

Simon Chan
Simon Chan 2021-9-22
Suppose the table is called T, then try the following:
T.Properties.VariableNames(1:4) = {'t_max','t_min','ang_azi_max','ang_azi_min'}
  3 个评论
显示 1更早的评论
Simon Chan
Simon Chan 2021-9-22
Try this:
temp = T.Properties.VariableNames(2:2:end);
temp_min = cellfun(@(x) strcat(x,'_min'),temp,'UniformOutput',false);
temp_max = cellfun(@(x) strcat(x,'_max'),temp,'UniformOutput',false);
temp_combine = vertcat(temp_max, temp_min);
T.Properties.VariableNames = temp_combine(:);
Stephen23
Stephen23 2021-9-22
@Simon Chan: STRCAT also operates on cell arrays of char vectors, so CELLFUN is entirely superfluous.

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