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How to make function assign variables that will stick around after the function is done running?

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Solarmew 2015-5-20

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评论： Star Strider 2015-5-20

采纳的回答： Star Strider

在 MATLAB Online 中打开

For example:

function test(x)
        car.color = x;
   end

if i first input

global car

I want car.color to exist after i input test('red')

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Star Strider 2015-5-20

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在 MATLAB Online 中打开

Have it return the structure ‘car’ as an output:

function car = test(x)
    car.color = x;
end
%
car = test('red')

produces:

car = 
    color: 'red'

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Solarmew 2015-5-20

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编辑：Solarmew 2015-5-20

在 MATLAB Online 中打开

but "car" doesn't exist anymore after the function has ran :( i want it to still be stored somewhere in the memory

i guess car = test('red') works ... i think <.<

edit: nope, running another function like

function car = test(x)
    car.make = x;
end
%
car = test('mazda')

removed color and just leaves "make"

I need to be able to apply functions to the same structure to pile on attributes

Star Strider 2015-5-20

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在 MATLAB Online 中打开

Try this:

car = struct('make',[],'model',[],'color',[],'year',[]);
% 
    function y = test1(x)
        car(1).color = x;
        y = car;
    end
% 
    function y = test2(x)
        car(1).make = x;
        y = car;
    end
% 
y = test1('red');
y = test2('Mazda');
% 
car

produces:

car = 
    make: 'Mazda'
    model: []
    color: 'red'
    year: []

Solarmew 2015-5-20

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编辑：Solarmew 2015-5-20

在 MATLAB Online 中打开

errrr, no, still doesn't assign anything for some reason :<

       make: []
      model: []
      color: []
       year: []

Star Strider 2015-5-20

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It did for me. Did you copy-paste-run the code I posted? (I’m running R2015a, but it should run on all recent releases.)

Post the code you’re running if it’s different from what I posted.

Solarmew 2015-5-20

此评论的直接链接

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Star Strider 2015-5-20

此评论的直接链接

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Run my code in a single script file. You may be inadvertently clearing the structure by running it in the Command Window.

Solarmew 2015-5-20

此评论的直接链接

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ah, i see, that worked! Thank you :]

Star Strider 2015-5-20

此评论的直接链接

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My pleasure!

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