matlab appdesigner中按钮控件选择文件在坐标区中画图,并在下拉框选择方法在第二个坐标区画图
时间: 2024-05-14 18:14:29 浏览: 114
以下是一个使用MATLAB App Designer的示例代码,其中包含一个按钮控件和一个下拉框控件。当单击按钮时,它将打开一个文件选择对话框,用户可以选择一个数据文件。然后,根据下拉框中选择的方法,在第一个坐标区中绘制数据的图形,在第二个坐标区中绘制方法的图形。
```matlab
classdef MyApp < matlab.apps.AppBase
% Properties that correspond to app components
properties (Access = public)
UIFigure matlab.ui.Figure
SelectFileButton matlab.ui.control.Button
MethodDropDown matlab.ui.control.DropDown
Axes1 matlab.ui.control.UIAxes
Axes2 matlab.ui.control.UIAxes
end
% Properties that correspond to app data
properties (Access = public)
Data % data from selected file
end
% Callbacks that handle component events
methods (Access = private)
% Button pushed function: SelectFileButton
function SelectFileButtonPushed(app, event)
% open file dialog and select data file
[filename, pathname] = uigetfile({'*.txt';'*.csv'}, 'Select Data File');
if isequal(filename,0) || isequal(pathname,0)
% user cancelled file selection
return;
end
% read data from file
data = dlmread(fullfile(pathname, filename));
app.Data = data;
% plot data in Axes1
plot(app.Axes1, data(:,1), data(:,2));
end
% Value changed function: MethodDropDown
function MethodDropDownValueChanged(app, event)
% get selected method
method = app.MethodDropDown.Value;
% plot method in Axes2
switch method
case 'Method 1'
plot(app.Axes2, app.Data(:,1), app.Data(:,2).^2);
case 'Method 2'
plot(app.Axes2, app.Data(:,1), app.Data(:,2).^3);
otherwise
error('Unknown method selected');
end
end
end
% App initialization and construction
methods (Access = private)
% Create UIFigure and components
function createComponents(app)
% Create UIFigure
app.UIFigure = uifigure;
app.UIFigure.Position = [100 100 640 480];
app.UIFigure.Name = 'My App';
% Create SelectFileButton
app.SelectFileButton = uibutton(app.UIFigure, 'push');
app.SelectFileButton.ButtonPushedFcn = createCallbackFcn(app, @SelectFileButtonPushed, true);
app.SelectFileButton.Position = [30 440 100 22];
app.SelectFileButton.Text = 'Select File';
% Create MethodDropDown
app.MethodDropDown = uidropdown(app.UIFigure);
app.MethodDropDown.Items = {'Method 1', 'Method 2'};
app.MethodDropDown.ValueChangedFcn = createCallbackFcn(app, @MethodDropDownValueChanged, true);
app.MethodDropDown.Position = [170 440 100 22];
app.MethodDropDown.Value = 'Method 1';
% Create Axes1
app.Axes1 = uiaxes(app.UIFigure);
title(app.Axes1, 'Data');
xlabel(app.Axes1, 'X');
ylabel(app.Axes1, 'Y');
app.Axes1.Position = [30 60 250 350];
% Create Axes2
app.Axes2 = uiaxes(app.UIFigure);
title(app.Axes2, 'Method');
xlabel(app.Axes2, 'X');
ylabel(app.Axes2, 'Y');
app.Axes2.Position = [330 60 250 350];
end
end
% App creation and deletion
methods (Access = public)
% Construct app
function app = MyApp
% Create UIFigure and components
createComponents(app)
% Initialize data
app.Data = [];
% Show the figure after all components are created
app.UIFigure.Visible = 'on';
end
end
end
```
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