How to apply a function to an specific column of all variables?
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Larissa Perez
el 17 de Nov. de 2016
Comentada: Larissa Perez
el 18 de Nov. de 2016
Hi everyone! I'm new to Matlab, so I'm sure this is a silly question.
I have about 20 variables, all same size matrix. I would like to turn all the values above 50 or below -50 in the first column into NaN, for all the variables. Can someone help me with that? This is what I have been trying to do:
myvars = who;
for i = 1:length(myvars)
data = eval(myvars{i});
shear = data(:,1);
shear(shear>50)=NaN;
shear(shear<-50)=NaN;
data(:,1) = shear;
eval(myvars{1}) = data;
end
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KSSV
el 17 de Nov. de 2016
You have variables saved in workspace which are matrices and in there in first column you want nan? What problem you are facing now with the above code?
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James Tursa
el 17 de Nov. de 2016
Editada: James Tursa
el 17 de Nov. de 2016
Try this:
eval([myvars{i} ' = data']);
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Jan
el 17 de Nov. de 2016
Don't do this. It is a bad programming style, because it impedes the debugging and performance. You find many discussions in this forum concerning eval, e.g. http://www.mathworks.com/matlabcentral/answers/194902-how-can-use-a-for-loop-to-name-a-matrix#answer_172980.
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