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How to ensure that dynamically create symbolically variables are real?
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Hello,
I'm creating symbolic variables dynamically and I wanted to ensure that the symbolic variables are real.
I have the code
clear all
index = {'1'};
List = {'A','B','C'};
A=sym(strcat(List,index))
How can I modify this to make sure that the symbolic variables stored in A are real? I have tried changing to A=sym(strcat(List,index),'real'), but this doesn't work.
Thank you, Kevin
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Réponses (2)
Azzi Abdelmalek
le 14 Fév 2014
I don't think you can, for example force the variable A1 to be real. If
A1=5+j
Then
index = {'1'};
List = {'A','B','C'};
A=sym(strcat(List,index))
out=subs(A(1))
The result is a complex number
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Azzi Abdelmalek
le 14 Fév 2014
s=regexp('A':'Z','.','match')
n=3
a=strjoin(strcat(s(1:n),'1'))
eval(['syms ' a ' real'])
eval(['A=[' a ']'])
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