我有3列记事本数据，我想绘制它，我已经完成了阅读但是当我绘制它们时它不起作用。也许错误就是把它作为专栏阅读，但我不知道如何做到这就是记事本数据：
x y z
4335554.03 9142298.37 161.09
4335556.17 9142302.03 156.82
4335556.67 9142315.09 154.00
4335560.58 9142316.57 154.69
4335568.68 9142308.81 154.12
4335573.75 9142306.00 154.60
4335597.23 9142291.80 155.23
4335585.35 9142293.23 153.69
4335563.85 9142262.00 164.81
4335527.84 9142303.28 162.81
4335552.00 9142322.25 151.90
4335556.60 9142324.86 152.46
4335567.70 9142325.68 153.60
4335573.84 9142344.56 153.70
4335580.60 9142345.14 155.92
这是我的GUI脚本：
% --- Executes on button press in Load.
function Load_Callback(hObject, eventdata, handles)
% hObject handle to Load (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global data
[filename pathname]=uigetfile({'*.txt'},'File Selector');
fileID = fopen(strcat(pathname, filename),'r'); % read-only permission
handles.fileData = fscanf(fileID,'%d');
guidata(hObject, handles);
fullpathname = strcat(pathname, filename);
text = fileread(fullpathname);
set(handles.text1,'string',fullpathname)
set(handles.text2,'string',text)
% --- Executes on button press in Start.
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)
global data
x = handles.fileData(:,1)
y = handles.fileData(:,2)
z = handles.fileData(:,3)
contour (x,y,z)
axes(handles.panel);
我无法弄清楚，y = handles.fileData(:,2)