how do i save the data from ginput?

2014 5 13
1 个回答
更新时间：2014 5 13
5 次查看（30 天）

0 个投票

This is my script:
% --- Executes on button press in pushbutton5. select finish line function pushbutton5_Callback(hObject, eventdata, handles)
data=[] data(1)=ginput(1); x=data(1){:,1} y=data(1){:,2}
i want to save the x, y points from the ginput, how would i do this?

请先登录，再回答此问题。

回答（1 个）

Dishant Arora
Dishant Arora 2014-5-13

0 个投票

data = ginput(2);
x = data(:,1);
y = data(:,2);
Or simply:
[x , y] = ginput(2);

5 个评论
显示 3更早的评论 隐藏 3更早的评论

Franchesca
Franchesca 2014-5-13
编辑：Franchesca 2014-5-13
I receive this error:
Attempted to access data(:,1); index out of bounds because size(data)=[0,0].
Error in sprintfinish>pushbutton2_Callback (line 101) x = data(:,1);
Error in gui_mainfcn (line 96) feval(varargin{:});
Error in sprintfinish (line 42) gui_mainfcn(gui_State, varargin{:});
Error in @(hObject,eventdata)sprintfinish('pushbutton2_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback
Franchesca
Franchesca 2014-5-13
okay it now works however, I cannot refer to it later on in the code it says undefined variable function 'x'
Undefined function or variable 'x'.
Error in sprintfinish>pushbutton3_Callback (line 117) st=x
Dishant Arora
Dishant Arora 2014-5-13
"later in the code" , does that mean you want to use it other callbacks, if yes you need to store it in the handles structure:
data = ginput(2);
handles.data = data;
guidata(hobject , handles)
Franchesca
Franchesca 2014-5-13
okay so how would I refer to it later on?

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Data Exploration 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by