How to use pushbutton and popupmenu

Question

Efren Lema 2015-8-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/235080-how-to-use-pushbutton-and-popupmenu

评论： Adam 2015-8-21

to use , pushbutton position data from a .csv and I can manipulate and store in any variable but when I go to the function no longer exists popupmenu this variable the code is as follows.

function pushbutton1_Callback(hObject, eventdata, handles) %Cargar archivo *.csv

[nombre direccion]=uigetfile('*.csv','Escoger Archivo *.CSV');

if nombre==0

    return 
end

EEGDATOS1=importdata(fullfile(direccion,nombre));

EEGDATOS1=EEGDATOS1.data;

function popupmenu_Callback(hObject, eventdata, handles)

    EEGDA=EEGDATOS1  % in this line gives me the error  HELP
     T7=EEGDA(:,2:2);
     %%Frecuencia de Muestreo y tiempo
     Fs=128;
     T=1/Fs;
     tiempo=size(T7)/Fs;
     tt=0:1/Fs:tiempo;
    H=get(handles.EscogerElectrodo,'Value')
switch H
    case 2 % AF3
        set(handles.mensaje,'String','AF3')
        drawnow();
    case 3 % F7
        set(handles.mensaje,'String','F7')
        drawnow();
      otherwise
end

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Answer 1

Adam 2015-8-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/235080-how-to-use-pushbutton-and-popupmenu#answer_189975

编辑：Adam 2015-8-21

在 MATLAB Online 中打开

You need

handles.EEGDATOS1 = EEGDATOS1
guidata( hObject, handles )

at the end of your pushbutton callback and

EEGDA = handles.EEGDATOS1

at the start of your popup menu callback.

Each function in a GUI, just like functions anywhere else that are not nested, has its own scope and workspace. Once the function ends so does its workspace. The call to the guidata function updates the UI's 'handles' structure onto which has now been added your data.