Create vector/matrix inside function

조회 수: 10(최근 30일)
Tejay Lovelock
Tejay Lovelock 2016년 5월 9일
댓글: Stefan Raab 2016년 5월 9일
Hi All,
I have a simple function file.
If I put something like this inside the function file; A = [1 2 3 4];
It will display this in the command window;
A = 1 2 3 4
But it won't save A in the Workspace as a vector.
How can I create a vector inside a function file and have that vector saved to my Workspace?

채택된 답변

Stephen23 2016년 5월 9일
편집: Stephen23 2016년 5월 9일
You return it as an output argument.
Like the MATLAB documentation clearly states, the best practice is to pass arguments:
So your function could be something like:
function [ct,A] = critPT( ... )
A = ...
ct = ...
and then call it:
[NewCT,newA] = critPT(...)
Note: the fact that you do not "see" the variable A in the base workspace is the whole point of functions: they should have independent workspaces, so that what happens inside any one function does not affect any other workspace. That is the point.
  댓글 수: 1
Tejay Lovelock
Tejay Lovelock 2016년 5월 9일
Thanks for that!

댓글을 달려면 로그인하십시오.

추가 답변(1개)

Stefan Raab
Stefan Raab 2016년 5월 9일
this is because functions have their own workspace. There is a good explanation in the MATLAB doc, please execute the following commands in the MATLAB Command Window to open the help browser:
  • Information on workspaces in general:
web(fullfile(docroot, 'matlab/matlab_prog/base-and-function-workspaces.html'))
  • Information on how to share data between workspaces:
web(fullfile(docroot, 'matlab/matlab_prog/share-data-between-workspaces.html'))
I hope this will help you.
Kind regards, Stefan
  댓글 수: 2
Stefan Raab
Stefan Raab 2016년 5월 9일
Ah, I was too slow :)

댓글을 달려면 로그인하십시오.


Find more on Get Started with MATLAB in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by