Multiple function handle in varfun
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Zeynab Mousavikhamene
el 7 de Dic. de 2019
Comentada: Walter Roberson
el 17 de Sept. de 2020
I need to calculate the mean and STD of elements of table and the resulting table show me the mean and std in two columns next to each other. Here is the code I am using:
Tmean = varfun(@mean,T,'GroupingVariables',...
{'stor','s_method'},'InputVariables',{'ix','atfa','iss','aad'});
How can I add STD to Tmean? I dont want to make separate table for STD.
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Respuestas (1)
Walter Roberson
el 7 de Dic. de 2019
You can use @(v) [mean(v), std(v)] as the function, and splitvars() afterwards.
2 comentarios
Yosef Farzi
el 17 de Sept. de 2020
That was a smart move. i am trying to save 'mean' string in a variable and the use that variable for splitvars(). no luck so far, any suggestions?
a= mean
b=std
@(v) [a(v),b(v)]
splitvars(T,[a,b])
Walter Roberson
el 17 de Sept. de 2020
fun = @(v) [feval(a,v), feval(b,v)]
Tmean = varfun(fun, T, 'GroupingVariables', ...
{'stor', 's_method'}, 'InputVariables', {'ix','atfa','iss','aad'});
Tout = splitvars(Tmean)
I would not recommend this approach. You would be better using
afun = str2func(a);
bfun = str2func(b);
fun = @(v) afun(v), bfun(v));
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