我也是个MATLAB新手，我也是个乐于助人的青年，


你是不是和我一样呢？


进来吧，发表你不懂的问题，讲讲你的看法



这里是你我的舞台，再幼稚的问题也要有勇气说出来



来吧，说出你的问题。这里的每个新手 都会用心的回答你的每一个问题。

[此贴子已经被作者于2006-11-20 17:49:53编辑过]

我建一个矩阵然后copylena索引图，用imshow显示出来是全白，怎么回事啊

我回去查一下，然后告诉你。

已经知道了

用guide编写简单的图形界面，比如  A+B=C 其中 A 和B是需要输入的数，问题是如何通过CALLBACK得到 A  B的值啊，不会啊，晕死了

因为是'string'属性的值是字符串,转成数字加,再转成字符串赋给控件

你好，能解释一下以下gui个部分的功能吗


function varargout = eggui3(varargin)
% EGGUI3 M-file for eggui3.fig
% EGGUI3, by itself, creates a new EGGUI3 or raises the existing
% singleton*.
%
% H = EGGUI3 returns the handle to a new EGGUI3 or the handle to
% the existing singleton*.
%
% EGGUI3('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in EGGUI3.M with the given input arguments.
%
% EGGUI3('Property','Value',...) creates a new EGGUI3 or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before eggui3_OpeningFunction gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to eggui3_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 eggui3

% Last Modified by GUIDE v2.5 25-Oct-2006 20:33:17

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @eggui3_OpeningFcn, ...
'gui_OutputFcn', @eggui3_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 eggui3 is made visible.
function eggui3_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 eggui3 (see VARARGIN)

% Choose default command line output for eggui3
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes eggui3 wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = eggui3_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 during object creation, after setting all properties.
function figure1_CreateFcn(hObject, eventdata, handles)
% hObject handle to figure1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called

function zeta_edit_Callback(hObject, eventdata, handles)
% hObject handle to zeta_edit (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of zeta_edit as text
% str2double(get(hObject,'String')) returns contents of zeta_edit as a double
z=str2num(get(handles.zeta_edit,'string'));
t=0:0.1:15;
cla;
%plot(t,sin(t));
for k=1:length(z)
y(:,k)=step(1,[2*z(k),1],t);
line(t,y(:,k));
end

% --- Executes during object creation, after setting all properties.
function zeta_edit_CreateFcn(hObject, eventdata, handles)
% hObject handle to zeta_edit (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end

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

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

% --------------------------------------------------------------------
function option_Callback(hObject, eventdata, handles)
% hObject handle to option (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

% --------------------------------------------------------------------
function Box_on_Callback(hObject, eventdata, handles)
% hObject handle to Box_on (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

% --------------------------------------------------------------------
function Untitled_2_Callback(hObject, eventdata, handles)
% hObject handle to Untitled_2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
box on;

% --------------------------------------------------------------------
function Box_off_Callback(hObject, eventdata, handles)
% hObject handle to Box_off (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
box off;

都是高手啊！

我安装了一个设备，自带驱动的那种，要在matlab平台下运行，装好驱动后，打开Matlab界面，直接设备自带驱动提供的命令（这里是“Ｃｒ”是供应商自己开发的）就可以打开一个界面了
有点罗索哈，下面进入我的问题，为什么我自己随便编一个Ｍ文件函数不入在Ｍａｔｌａｂ运行时的当前目录里就无法运行，而它的这个也不在当前目录里却能运行呢？
各位给指点一二，小弟感激不尽
以上的问题来源概括一下就是什么样的文件能在Ｍａｔｌａｂ里面直接运行，什么样的文件必须要在Ｍａｔｌａｂ当前目录下面运行呢？
不知道我问得明白否，刚刚入门，问得不够专业～

应该是自己定义的M文件必须在当前目录下或设定的搜索路径下，才可运行。

比如图象啊什么的也必须这样才可读入。

我也只懂这些了。我也是新手啊。


努力！