在MatlabGUI中获取数据游标回调

如何为特定GUI轴设置Matlab GUI数据光标回调？ 我能做到。我可以在打印的数据上选择3D点，但我需要在数据光标文本中添加更多信息，还需要对它获得的坐标进行其他处理

我试图遵循“”，但不适用于GUI

GUI轴不是图形，因此我得到以下错误：

使用datacursormode时出错（第149行） 无效的数字句柄

这里我需要相同的，但对于GUI轴（图？）：

功能测试\u main
%绘制图形并设置自定义数据提示更新功能
图=图（'DeleteFcn'，'doc datacursormode'）；
X=0:60；
t=（X）*0.02；
Y=sin（-16*t）；
绘图（X，Y）
dcm_obj=数据游标模式（图）；%在这里试过“把手，我的手指”
集合（dcm_obj，'UpdateFcn'，{@myupdatefcn，t}）
函数txt=myupdatefcn（~，事件_obj，t）
%自定义数据提示的文本
pos=获取（事件对象，“位置”）；
I=获取（事件对象，“数据索引”）；
txt={['X:'，num2str（位置（1））]，。。。
[Y:'，num2str（位置（2））]，。。。
[I:'，num2str（I）]，。。。
['T:'，num2str（T（I））]}；

目前，我只能获得默认的datacursor行为，如下图所示：

---

我没有发现在GUI和图形中使用

数据光标之间有任何区别

在使用部分代码时，我创建了一个GUI，其中有一个
复选框
启用/禁用
datacursormode

GUI包含两个
轴
，其中分别绘制了两条直线和一个3D曲面

还有三个
单选按钮
控制启用
datacursormode
时生成的文本框中打印的字符串

GUI的标签如下所示：


左
轴
：
轴_2d
右
轴
：
轴_3d
左
按钮
：
按钮_2d
右
按钮
：
按钮\u 3d
checkbox
：
checkbox\u enable\u dc
左
radiobutton
：
radiobutton1
中间的
radiobutton
：
radiobutton2
右键
radiobutton
：
radiobutton3

GUI的工作方式如下：


按钮
在轴上绘图并启用
复选框
复选框
启用/禁用
datacursormode
默认情况下，选择左侧的
单选按钮
，并设置默认字符串
另外两个
单选按钮
设置不同的字符串

根据所选的
单选按钮
，文本框中字符串的第一行将为：


默认字符串
字符串选项一
字符串选项二

要在文本框中写入的字符串是在您的
myupdatefcn
中创建的，该文本框已被修改以处理
radiobutton
选择的选项

注意：为了不限制对
myupdatefcn
函数版本的修改，我硬编码了
t
数组

这是GUI的
.m
文件：

function varargout = gui_datacursormode(varargin)
% GUI_DATACURSORMODE MATLAB code for gui_datacursormode.fig
%      GUI_DATACURSORMODE, by itself, creates a new GUI_DATACURSORMODE or raises the existing
%      singleton*.
%
%      H = GUI_DATACURSORMODE returns the handle to a new GUI_DATACURSORMODE or the handle to
%      the existing singleton*.
%
%      GUI_DATACURSORMODE('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in GUI_DATACURSORMODE.M with the given input arguments.
%
%      GUI_DATACURSORMODE('Property','Value',...) creates a new GUI_DATACURSORMODE or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before gui_datacursormode_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to gui_datacursormode_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 gui_datacursormode

% Last Modified by GUIDE v2.5 02-Apr-2017 17:45:45

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @gui_datacursormode_OpeningFcn, ...
                   'gui_OutputFcn',  @gui_datacursormode_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 gui_datacursormode is made visible.
function gui_datacursormode_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 gui_datacursormode (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = gui_datacursormode_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 pushbutton_2d.
function pushbutton_2d_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_2d (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Plot two lines in the first axes
t=0:.1:2*pi;
plot(handles.axes_2d,t,sin(t),'r');
hold(handles.axes_2d,'on')
plot(handles.axes_2d,t,cos(t),'b');
% Enable the checkbox that will set datacorsormode on
handles.checkbox_enable_dc.Enable='on';


% --- Executes on button press in pushbutton_3d.
function pushbutton_3d_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton_3d (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Plot a 3D graph in the second axes
axes(handles.axes_3d);
peaks

% Enable the checkbox that will set datacorsormode on
handles.checkbox_enable_dc.Enable='on';


function txt = myupdatefcn(~,event_obj,t)
% Customizes text of data tips

% Get the handles of the GUI to access to the radiobuttons
my_guidata=guidata(gcf);
% Define the additional string to be written
if(my_guidata.radiobutton1.Value)
   str='DEFAULT STRING ';
elseif(my_guidata.radiobutton2.Value)
   str='STRING OPTION ONE ';
else
   str='STRING OPTION TWO ';
end

% Get the datacursor data
pos = get(event_obj,'Position');
I = get(event_obj, 'DataIndex');
% Create the whole string to be written
txt = {[str], ...
       ['X: ',num2str(pos(1))],...
       ['Y: ',num2str(pos(2))],...
       ['I: ',num2str(I)],...
       ['T: ',num2str(t(I))]}


% --- Executes on button press in checkbox_enable_dc.
function checkbox_enable_dc_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox_enable_dc (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% If the checkbox is set
if(hObject.Value)
   %  enable the radiobuttons that control the string to be written
   handles.radiobutton1.Enable='on';
   handles.radiobutton1.Value=1;
   handles.radiobutton2.Enable='on';
   handles.radiobutton3.Enable='on';
   % Create the datacursormode object
   dcm_obj = datacursormode(gcf)
   t=rand(1,10000);
   set(dcm_obj,'DisplayStyle','datatip',...
      'SnapToDataVertex','off','Enable','on', ...
      'UpdateFcn',{@myupdatefcn,t})
else
   % If the checkbox is not set, disable the datacursormode
   datacursormode 'off'
end


% --- Executes on button press in radiobutton1.
function radiobutton1_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton1

% Toggle the other radiobuttons
handles.radiobutton2.Value=0
handles.radiobutton3.Value=0

% --- Executes on button press in radiobutton1.
function radiobutton2_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton1

% Toggle the other radiobuttons
handles.radiobutton1.Value=0
handles.radiobutton3.Value=0


% --- Executes on button press in radiobutton1.
function radiobutton3_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton1

% Toggle the other radiobuttons
handles.radiobutton1.Value=0
handles.radiobutton2.Value=0


希望这有帮助

Qapla'
似乎datacursormode只支持图形句柄。从我的理解来看，数据光标的行为似乎对图形上的所有轴都是通用的。一定有办法。它按预期显示所选的点，我只是不知道如何设置它的回调，这样我就可以完成我的工作。您可以尝试使用
hGetBehavior
，如前所述，或者使用文件交换，它支持GUI中的自定义函数，直到它的描述。回答不错！非常感谢。