Question

我是MATLAB的新手，我使用UIpanel和axes方法在GUI上添加了一个徽标。但是由于它是一个显示我的图像的轴，有一个我想要删除的缩放（放大镜）光标，但我无法。当我在Uipanel中创建轴时，我没有得到通常自动生成的createfuncn和callback，那么我该如何处理呢。在此先感谢

Answer 1

您可以使用zoom off或zoom(f, 'off')关闭缩放，其中f是GUI图形的句柄。

请注意，在图形的水平上打开或关闭缩放，而不是单个轴，因此您无法直接对一组轴进行缩放

Answer 2

我找到了一个可能的解决方案，允许启用/禁用特定选定轴的缩放：

解决方案包括使用函数：

setAllowAxesZoom

我已经创建了一个简单的GUI（带有“GUIDE”），它包含两个轴，并且每个轴都有两个按钮来启用/禁用缩放。

在图的OpeningFcn功能中，我将缩放设置为左轴：

h=zoom;
setAllowAxesZoom(h,handles.left_axes,false);

当运行GUI并从图形工具栏中选择zoon工具时，它对左轴没有影响，同时它对右轴产生影响。

在按钮回调中，调用setAllowAxesZoom以启用或禁用相应轴上的缩放。

这是整个GUI“.m”文件的代码（我不知道如何共享“.fig”文件（抱歉）。

function varargout = zoom_on_off(varargin)
% ZOOM_ON_OFF MATLAB code for zoom_on_off.fig
%      ZOOM_ON_OFF, by itself, creates a new ZOOM_ON_OFF or raises the existing
%      singleton*.
%
%      H = ZOOM_ON_OFF returns the handle to a new ZOOM_ON_OFF or the handle to
%      the existing singleton*.
%
%      ZOOM_ON_OFF('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in ZOOM_ON_OFF.M with the given input arguments.
%
%      ZOOM_ON_OFF('Property','Value',...) creates a new ZOOM_ON_OFF or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before zoom_on_off_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to zoom_on_off_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help zoom_on_off

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @zoom_on_off_OpeningFcn, ...
                   'gui_OutputFcn',  @zoom_on_off_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 zoom_on_off is made visible.
function zoom_on_off_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to zoom_on_off (see VARARGIN)

% Choose default command line output for zoom_on_off
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes zoom_on_off wait for user response (see UIRESUME)
% uiwait(handles.figure1);

imshow('cubo_cubi.jpg','parent',handles.left_axes)
h=zoom;
setAllowAxesZoom(h,handles.left_axes,false);
plot(handles.right_axes,[0:.1:4*pi],sin(4*[0:.1:4*pi]))
grid(handles.right_axes,'on');


% --- Outputs from this function are returned to the command line.
function varargout = zoom_on_off_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in enable_zoom_left_axes.
function enable_zoom_left_axes_Callback(hObject, eventdata, handles)
% hObject    handle to enable_zoom_left_axes (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
h=zoom;
setAllowAxesZoom(h,handles.left_axes,true);
set(handles.disable_zoom_left_axes,'enable','on')
set(handles.enable_zoom_left_axes,'enable','off')


% --- Executes on button press in disable_zoom_left_axes.
function disable_zoom_left_axes_Callback(hObject, eventdata, handles)
% hObject    handle to disable_zoom_left_axes (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
h=zoom;
setAllowAxesZoom(h,handles.left_axes,false);
set(handles.disable_zoom_left_axes,'enable','off')
set(handles.enable_zoom_left_axes,'enable','on')


% --- Executes on button press in enable_zoom_right_axes.
function enable_zoom_right_axes_Callback(hObject, eventdata, handles)
% hObject    handle to enable_zoom_right_axes (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
h=zoom;
setAllowAxesZoom(h,handles.right_axes,true);
set(handles.disable_zoom_right_axes,'enable','on')
set(handles.enable_zoom_right_axes,'enable','off')


% --- Executes on button press in disable_zoom_right_axes.
function disable_zoom_right_axes_Callback(hObject, eventdata, handles)
% hObject    handle to disable_zoom_right_axes (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
h=zoom;
setAllowAxesZoom(h,handles.right_axes,false);
set(handles.disable_zoom_right_axes,'enable','off')
set(handles.enable_zoom_right_axes,'enable','on')

在接下来的图片中，GUI的一些快照启用/禁用了缩放功能（Juppiter的图片取自“美国宇航局/约翰斯·霍普金斯大学应用物理实验室/西南研究所 - 美国国家航空航天局”的“Jupiter New Horizons”）。 Conmitsza Pubblico dominio tramite Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Jupiter_New_Horizons.jpg#/media/File:Jupiter_New_Horizons.jpg）

1）刚打开的GUI：选择缩放工具，左轴禁用，右轴启用

2）放大右轴

3）“启用左轴缩放”按下按钮，缩放图片

（*）按钮也被启用/禁用。

enter image description here

希望这有帮助。

在Matlab中从GUI轴移除缩放

2 个答案: