由Matlabs指南构建的GUI的回调共享的变量
||
我有点发现Matlab中的GUI开发，并尝试了一些基本概念的困难。如果有人可以帮助我，我将非常感激。
我正在尝试使用matlab \'guide \'构建一个GUI，而我所要做的就是将图像加载到轴中，并且我想将其保存到一些全局变量中，这种方式将由GUI中的所有回调共享我可以在其他事件处理程序上处理此图像。
我在寻找解决方法时遇到麻烦，我尝试将某些变量声明为'global'，但是没有成功。您能给我解释一下它是如何工作的，或举一个简单的例子。谢谢
没有找到相关结果
已邀请:
1 个回复
缮记箔
function varargout = picture_loader(varargin) % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct(\'gui_Name\', mfilename, ... \'gui_Singleton\', gui_Singleton, ... \'gui_OpeningFcn\', @picture_loader_OpeningFcn, ... \'gui_OutputFcn\', @picture_loader_OutputFcn, ... \'gui_LayoutFcn\', [] , ... \'gui_Callback\', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT % --- Executes just before picture_loader is made visible. function picture_loader_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject; handles.img = 0; % Add the img data to the handle guidata(hObject, handles); % --- Outputs from this function are returned to the command line. function varargout = picture_loader_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output; % --- Executes on button press in Browse. function Browse_Callback(hObject, eventdata, handles) global img % Store the data global img_path = uigetfile(\'*.gif\'); % browse for a file img = importdata(img_path); % Load the image data handles.img = img; % Store the img data in the handles struct guidata(hObject, handles); % Save handles so all call backs have the updated data % Plot the data in the axes1 axes(handles.axes1) % Select axes1 to write to image(img.cdata) % Display the image colormap(img.colormap) % Apply proper colormap % --- Executes on button press in load_global. function load_global_Callback(hObject, eventdata, handles) global img if isstruct(img) axes(handles.axes1) %Select the axes1 on the gui image(img.cdata) colormap(img.colormap) end % --- Executes on button press in load_global_handle. function load_handle_Callback(hObject, eventdata, handles) if isstruct(handles.img) axes(handles.axes1) %Select the axes1 on the gui image(handles.img.cdata) colormap(handles.img.colormap) end % --- Executes on button press in clear. function clear_Callback(hObject, eventdata, handles) cla(handles.axes1)