how to count the number of terms in syms
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Hello!
I have a syms variable let's say A which is an addition of many terms say: A=a+b-c*a+a*b-d+... I want to count the number of added terms in A, how can I do that? my matlab version is 2012 by the way.
Thank you!
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Ameer Hamza
il 20 Ott 2020
Try this
syms a b c d
A=a+b-c*a+a*b-d+a*c;
num_terms = numel(regexp(char(A), '[+-]?'))+1;
Walter Roberson
il 20 Ott 2020
feval(symengine, 'nops', A)
In newer releases you can numel(children(A)) but that is several years after your version
KSSV
il 20 Ott 2020
You can get the number of sym variables present in the work spce using:
s = whos ;
iwant = nnz(strcmp({s(:).class},'sym'))
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