Can I find and replace all multiplication operators in an expression with element-wise operators? I'd like to avoid manual entry!

I am generating expressions that are functions of 2 unknowns, a and h. The expressions look something like this, but much longer:

 S=(1366586424347476791*cot(a)*(h/(h + 1/10000) - 1))

I'd like to plug in arrays for the unknowns, and graph S versus h. However, I don't want to manually enter .*, ./, etc. for every operator (the expression is super long). Any tricks to replace all the operators in an expression with their element-wise equivalents?

Thanks for the help!

Answer 1

[Star Strider]

You have to copy your expression as a string expression (easy enough — just put single quotes around it — inside the vectorize function), but vectorize will do it all for you:

% S=(1366586424347476791*cot(a)*(h/(h + 1/10000) - 1));
S = vectorize('(1366586424347476791*cot(a)*(h/(h + 1/10000) - 1))')

S =
(1366586424347476791.*cot(a).*(h./(h + 1./10000) - 1))

You have to edit it to put it on a single line and back into your code, but that’s easier than doing the vectorization yourself.

[Shelbs]

This saves a ton of time, thanks! Still wish there was a way to automate, but this will work.

[Star Strider]

My pleasure!

This is as close as you can get to automating it.

If my Answer came close enough to solving you problem, please Accept it!