(MATLAB TRICK AND SHORTCUTS): I would like to rename all my variables within a script without do it manually one by one

923 vues (au cours des 30 derniers jours)
I have a function with inputs (a,b,c,d) and I would like to have the same function in a vector x such that a=x(1), b=x(2), c=x(3), d=x(4) without rename the one by one.
I am asking that because when I underline a variable such "a" all the "a's" within the code highlight as well. I was thinking that there might be a command to change all of them instantaneously into x(1). The same for the other variable
PS: I possess the version of matlab (R2016a)
  2 commentaires
enzo fiasco
enzo fiasco le 13 Avr 2017
I see what you mean but my question was more related on how to use matlab more efficiently. My question could have been: -how to change my input named "sigma" to "mean" without doing by hand with the guarantee it is done in every section of my script? -
Anyway, thanks for the suggestion because I was not doing it consistently in my codes and it is better to correct my mistakes and form a good habit sooner than later.

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Réponse acceptée

KSSV le 7 Avr 2017
Modifié(e) : KSSV le 7 Avr 2017
One of the option I follow:
  • 1. select the variable you want to replace
  • 2. Press control + f (this is used to find). A pop out comes, there will be a option find, replace,
  • replace all.
  • 3. Type what you want to replace with..
  • 4. Go for find and replace or Replace all.
Be careful while replacing.

Plus de réponses (3)

Image Analyst
Image Analyst le 13 Avr 2017
Simply click in the variable that you want to rename, on a line where you assign something to it. Start editing the name and you'll see a popup tooltip string says "Press shift-Enter to rename n instances.....". So do that, type shift enter and all your variables will be renamed to the current/new name that you just gave it.
  3 commentaires
Image Analyst
Image Analyst le 29 Mar 2022
@Lina Koronfel, are you saying the shift enter way is not working for you? If not you'll have to use control-h to replace. Unfortunately there is no way with that to limit replacements to only those inside a specific section or function in the editor window.

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Jan le 7 Avr 2017
Modifié(e) : Jan le 7 Avr 2017
Rename the variable at first to a unqiue name by editing one instance and hitting - I do not remember, perhaps Shift-Return (it should appear as a context menu or tooltip). Rename "a" to "a_replace_", if this string does never occur inside the function.
Afterwards your can perform a standard Replace from the FIND menu (Ctrl-f): "a_replace_" to "x(1)" - see KSSV's answer.
  2 commentaires
DGM le 1 Déc 2022
The variable renaming functionality can stop working if you interrupt the editing of the variable name by moving away and moving back. There may be other conditions under which it doesn't work (e.g. if you're trying to rename across function scopes)

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dbmn le 7 Avr 2017
There is a simple solution for this, although it is ugly. But it takes minimal time to adapt.
Old Function
function [out] = myfun(a, b, c, d)
% yourcode...
New Function
function [out] = myfun(x)
a = x(1); b=x(2); c=x(3); d=x(4);
% yourcode...
I agree with the other posters, using single letters for variables might not be the best thing to do. I do this in loops but otherwise usually put my variables in structs that you can handle quite easy.


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