matlab - Matlab将变量从一个回调传递到另一个
问题描述
我是 matlab 新手,我想将一个变量传递给另一个变量:
这是回调 1,我在其中使用 input 编写变量:
function pushbutton2_Callback(hObject, eventdata, handles)
c = {'Enter image size:'};
title = 'Input';
dims = [1 35];
definput = {'500'};
answer = inputdlg(c,title,dims,definput);
disp(answer);
b = str2double(answer); // I want to pass this b to other callback
disp(b);
guidata(hObject, handles);
在这里,我得到了另一个回调,我希望变量b是我的c:
function pushbutton1_Callback(hObject, eventdata, handles)
h = randi([0 70],c,c); //here I want that c would be my b from another callback
dlmwrite('myFile.txt',h,'delimiter','\t');
[file,path] = uigetfile('*.txt');
fileID = fopen([path,file],'r');
formatSpec = '%d %f';
sizeA = [c c];
A = fscanf(fileID,formatSpec,sizeA);
fclose(fileID);
disp(A);
image(A);
saveas(gcf,'kazkas.png')
%uiputfile({'*.jpg*';'*.png'},'File Selection');
guidata(hObject, handles);
解决方案
你的guidata(hObject, handles);
. 您可以使用该handles
结构来存储数据,如下所示:
function pushbutton2_Callback(hObject, eventdata, handles)
% [...] your code
handles.b = b; % Store b as a new field in handles
guidata(hObject, handles); % Save handles structure
现在您可以handles.b
从您的pushbutton1_Callback
:
function pushbutton1_Callback(hObject, eventdata, handles)
c = handles.b;
% [...] your code
有关guidata()和句柄的更多信息。