How to call a script when clicking on a button in matlab app.designer?

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ErikJon Pérez Mardaras 2021-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/717118-how-to-call-a-script-when-clicking-on-a-button-in-matlab-app-designer

评论： Cris LaPierre 2021-1-14

采纳的回答： Cris LaPierre

I am trying to do the following app:

In which, when clicking on the button, a script is executed and its numerical calculations performed and its result appears in the white window

I have defined as private property the following variables with those values.

So when the button is clicked, the script (which name is: operasion.m) is called and the result (j) appears on the white window

The script is the following

Thank you very much for the help. By the way, the script.m and the app are saved in the same folder

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Cris LaPierre 2021-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/717118-how-to-call-a-script-when-clicking-on-a-button-in-matlab-app-designer#answer_598088

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You run a script by calling it by name.

However, is there a reason you don't just include the code and parameters inside your app? It seems unnecessary to have this code in an external m file.

app.solu.Value= app.a + app.b;

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ErikJon Pérez Mardaras 2021-1-14

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Thanks for your reply!

In one hand, I have used app.a and app.b values inside the script (instead of a and b) and it doesn't work.

In the other hand:

My real project is that one:

On the left the user enters the number of inputs you want and know (and its values) and on the right the number of outputs you want to know the value of. By default, the values are "9999" (which I considered as 9999 as 6969 as invalid ones).

The inputs and outputs can be: F,Em,Ec,m,g,h,a,v

The point is that you enter whatever and whichever inputs you want and its values and when you click the button, the program calculates what it can according to that information.

Knowing that:

F=m*a

Em=m*g*h

Ec=(1/2)*m*(v^2)

Which corresponds to the following function.m respectively:

p_fuer.m

p_enmecm

p_encin.m

So the script (named: programphysic) that sees what values are known and which ones are not and can be calculated and calculates them and appears in the output windows.

The script is the following:

if m==6969&&F~=9999&&F~=6969&&a~=9999&&a~=6969
    m=9999;
    [F,m,a]=p_fuer(F,m,a)
elseif m==6969&&Em~=9999&&Em~=&&g~=9999&&g~=&&h~=9999&&h~=6969
    m=9999;
    [Em,m,g,h]=p_enmec(Em,m,g,h)
elseif m==6969&&Ec~=9999&&Ec~=&&v~=9999&&v~=6969
    m=9999;
    [Ec,m,v]=p_encin(Ec,m,v)
end
if F==6969&&m~=9999&&m~=6969&&a~=9999&&a~=6969
    m=9999;
    [F,m,a]=p_fuer(F,m,a)
end
if a==6969&&F~=9999&&F~=6969&&m~=9999&&m~=6969
    m=9999;
    [F,m,a]=p_fuer(F,m,a)
end
if Em==6969&&m~=9999&&m~=6969&&g~=9999&&g~=6969&&h~=9999&&h~=6969
    m=9999;
    [Em,m,g,h]=p_enmec(Em,m,g,h)
end
if g==6969&&m~=9999&&m~=6969&&h~=9999&&h~=6969&&Em~=9999&&Em~=6969
    m=9999;
    [Em,m,g,h]=p_enmec(Em,m,g,h)
end
if Ec==6969&&m~=9999&&m~=6969&&v~=9999&&v~=6969
    m=9999;
    [Ec,m,v]=p_encin(Ec,m,v)
end
if v==6969&&Ec~=9999&&Ec~=6969&&m~=9999&&m~=6969
    m=9999;
    [Ec,m,v]=p_encin(Ec,m,v)
end
if h==6969&&Em~=9999&&Em~=6969&&g~=9999&&g~=6969
    h=9999;
    [Em,m,g,h]=p_enmec(Em,m,g,h)
end

So, the point and the issue I have is that when you click on the button CALCULATE, the matlab.app runs the script.

ErikJon Pérez Mardaras 2021-1-14

编辑：ErikJon Pérez Mardaras 2021-1-14

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I have also to rename j as follows:

j=app.j;

And yes, It worked!

Thank you very much!!

Cris LaPierre 2021-1-14

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At least based on the original example you don't have to do j=app.j since j is calculated in the script. If you want to save the value in your app, you probably want to do the opposite.

app.j = j;

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