array of symbolic variables which are function of time
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Jai Tushar
le 25 Oct 2017
Modifié(e) : Juraj Lieskovský
le 4 Mar 2021
p = sym('p', [m 1]);
the above code gives me an array of symbolic variables, where m is the size of the matrix. However i want to create an array of symbolic variables which are function of time i.e. p1(t),p2(t),.... .
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Walter Roberson
le 26 Oct 2017
There is no facility to do this. You will need to loop (or equivalent). For example in R2017b or later,
p = arrayfun(@(N) str2sym(sprintf('p%d(t)',N)), 1:5).'
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Walter Roberson
le 26 Oct 2017
ptemp = arrayfun(@(N) sym(sprintf('p%d(t)',N)), (1:m).', 'uniform', 0);
p = vertcat(ptemp{:});
You might get m warnings along the line of
Warning: Support of character vectors that are not valid variable names or define a number will be removed in a future release. To create symbolic
expressions, first create symbolic variables and then use operations on them.
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Juraj Lieskovský
le 4 Mar 2021
Modifié(e) : Juraj Lieskovský
le 4 Mar 2021
Simple solution (using R2020b)
syms t
syms p(t) [m,1]
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