function start_Callback(hObject, eventdata, handles)% hObject handle to start (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)try delete(allchild(handles.axes1));endx1=str2num(get(...
将字符数组或字符串转换为数值数组 全页折叠 语法 X = str2num(txt) X = str2num(txt,Evaluation=method) [X,tf] = str2num(txt) 说明 X= str2num(txt)将字符数组或字符串标量转换为数值矩阵。输入可以包含空格、逗号和分号,以指示单独的元素。如果str2num不能将输入解析为数值,则返回空矩阵。