Question

I need to use output from first function as input to second function (callback). This is not a problem if I don't close the GUI but I want to use first callback, save value, close GUI and then open GUI again and use that value in second function. I hope you guys understand.

I tried to use CloseRequestFcn and OpeningFcn with setappdata/getappdata or save/load but either this can't be done or I'm doing something wrong.

I had few different errors like "Reference to non-existent field " or similar but still stuck.

Answer 1

我看到两个选项：

使用全局变量：使用global将变量声明为全局变量。按“保存”按钮和/或关闭GUI时写入此变量。然后在打开GUI和/或按下“加载”按钮时从全局读取。
使用文件：使用save和load函数将Matlab变量存储和检索到文件中。请参阅Matlab文档，了解如何仅存储特定变量。

全局变量示例：

global testvar

if isempty(testvar)
    testvar = 0;
end

disp(datestr(now))
disp(testvar)

testvar = testvar + 1;

文件示例：

if exist('testfile.mat', 'file')
    load('testfile', 'testvar')
else
    testvar = 0;
end

disp(datestr(now))
disp(testvar)

testvar = testvar + 1;

save('testfile', 'testvar')

How to save passed value between two functions(callbacks) after closing the GUI?

1 个答案: