Basic Matlab and Gui

8/2/2019 Basic Matlab and Gui

1/40

I - 1Building a Graphical User Interface with MATLAB

Basic MatlabMatrix definition

a=[1,2 ; 3,4] => a= 1 23 4

Vector is a matrix with one column or one row.

a=[1;2;3;4;5 ;; ] one column

b=[1,2,3,4,5,6 ,,..] one row


2/40


Basic MatlabExample

a=[1,2,3,4,5];b=[a;a;a]

b= 1 2 3 4 51 2 3 4 5

1 2 3 4 5

Example

a=[1;2;3;4;5];b=[a,a,a]

b= 1 1 1 12 2 2 2

3 3 3 3

4 4 4 45 5 5 5Example (transpose)

a=[1;2;3;4;5];

b=ab= 1 2 3 4 5


3/40


Basic Matlab

Strings

a=[a,b,c]a= abc

b=[a;a;a]

b= abc

abcabc

Strings

a=[a,b,c]a= abc

b=[a,a,a]

b= abcabcabc

Strings

a=[a,b,c]b=[a,c,c]

c=(a==b);

c= 1 0 1


4/40


Basic Matlab

1 2

3 4

5 6

7 8

6 8

10 12

19 22

* 43 50

A

B

A B

A B

====

====

+ =+ =+ =+ =

====

5 12

.* 21 32

1 4

.^ 2 9 16

sin(1) sin(2)

sin( ) sin(3) sin(4)

A B

A

A

====

====

====


5/40


Basic Matlab

A=zeros(a1

, a2

, a3

, an

);A is an ndimensional matrix of zeros.A=ones(a1, a2, a3, an);

A is ann

dimensional matrix of ones.

size(A) return the size of A at each diminution.

size(A,Dim) return the size of A at the diminution Dim.


6/40


Basic Matlab

A(m,n) returns the value of the matrix in row-mand column-n.

b=A(1:end,1) : b will be equal to column 1 of A

b=A(5:10,5:10) : b will a-6x6 matrix containing all

values of A from rows 5-10 and columns 5-10.


7/40


Basic MatlabFunctions in Matlab

function [output variables]=function_name (input variables)

Input and output variables, can be of any type.


8/40


function [out_1,out_2,out_3] = Function_Dec (in_1,in_2,in_3)

out_1=in_1+in_2+in_3;

out_2=[ 'hello' ; 'world' ];out_3=[1,2,3,4,5];

return;



9/40


input: [a,b,c]=Function_dec(5,3,2)

output:

a = 10b = helloworld

c = 1 2 3 4 5

input: [a,b,c]=Function_dec([1,2,3],[6,5,4],[3,4,5])

output:

a = 10 11 12b = hello

world

c = 1 2 3 4 5



10/40


Basic MatlabBit-wise operationsVariables must be integers

BITAND (a,b) Bit-wise AND.BITOR (a,b) Bit-wise OR.BITXOR (a,b) Bit-wise XOR.

BITGET (a,bit-num) Get bit.BITSET (a,bit-num,1/0) Set bit.BITSHIFT (a,+/- shift_size) Bit-wise shift.


11/40


Basic Matlabconditions

If ( Boolean expression).end;

Boolean expression== : Is Equal~=: Not Equal

> : Is grater then< : Is less Then>=: Is grater then or equal to


12/40


Basic Matlabconditions

switch switch_expr

case case_expr,statement, ..., statement

case {case_expr1, case_expr2, case_expr3,...}statement, ..., statement

...

otherwise,statement, ..., statement

end


13/40


Basic MatlabLoops

for j=start:step:end.end;

example:for j=-1:0.2:3

.

end;

while Boolean expression,.end;

example:while a>b,

.

end;

break - Terminate execution of WHILE or FOR loop.

break terminates the execution of FOR and WHILE loops.In nested loops, BREAK exits from the innermost loop only.


14/40


Basic MatlabDrawingplot(X,Y) plots vector Y versus vector Xy yellow . point - solidm magenta o circle : dotted

c cyan x x-mark -. dashdot

r red + plus -- dashed

g green * starb blue s square

w white d diamond

k black v triangle (down)

^ triangle (up)

< triangle (left)

> triangle (right)

p pentagramh hexagram


15/40


Drawing a circle

t=0:0.1:2*pi;x=10*cos(t);y=10*sin(t);

plot (x,y);

Drawing a doted circle.

t=0:0.1:2*pi;x=10*cos(t);y=10*sin(t);

plot (x,y,.);

Basic MatlabDrawing


16/40


ezplot(x^2+y^2=1);

Basic MatlabDrawing

ezplot(x^2/5+y^2/20=1);


17/40


a=0:0.2:2*pi;b=ones(1,length(a));c=sin(a'*b);

figure;subplot(1,2,1);

surf(c);

Basic MatlabDrawing


18/40


figure;t=0:0.1:2*pi+0.1;b=ones(1,length(t));

z=b'*(1:1:length(t));x=(10*sin(z)+15).*sin(t'*b);y=(10*sin(z)+15).*cos(t'*b);

surf(x,y,z);

Basic MatlabDrawing


19/40


figure -open new figure.

drawnow -draw to screen immediately.hold on -draw the next draw to the same figure and axes.

-Transpose

% - remark

help command- return the help information on the command.

lookfor Word - return a list of all commands that havethe desired word in their help.

Basic MatlabSome useful commands


20/40


Basic MatlabAdding a path to a library

1

2

3

4


21/40


5

6

7

8

Adding a path to a library


22/40


Basic MatlabAdding a path to a library9

10


23/40

Building GUIs with MATLAB

Oren Meirom

Omikron Delta

GUIs

B ildi G hi l U I f i h M


24/40


What is a Callback? A callback is a sequence of commands which are

implemented by activating a graphics object:

e.g. CreateFcn, CallBack, ButtonDownFcn, DeleteFcn.

B ildi G hi l U I t f ith MATLAB


25/40


Storing information in Tag! This property can store a string vector, which

means that you can assign a unique name to

every single graphics object.

! Provides an alternative to the technique ofstoring the variables in the userdata property.

B ildi G hi l U I t f ith MATLAB


26/40


The 10 styles of Matlab Uicontrol objects! Push Button.

! Toggle Button.

! Check Box.

! Radio Button.

! Editable Text.! List Box.

! Pop-up Menu.

! Slider.

! Frame.

!

Static Text

IBuilding a Graphical User Interface with MATLAB


27/40


Push/Toggle Buttons! The push button is widely prevalent uicontrol

style that is used primarily to indicate that a

desired action should immediately take place.

! The toggle button look just like push button,except there is no intermediate state.Rather, the

button will remain in its selected or not selectedstate after the user clicks on it.

>>mcpush

I 28Building a Graphical User Interface with MATLAB


28/40


Check Box! Useful for representing two states of an option

that you may want to provide (usually as on and

off).! In its off state the check box will consist of an

empty or unfilled square. In the on state, thecheck boxs square will contain a V sign.

>>mccheckbox,mccheckbox1



29/40


Radio Button! Similar to the check box in that there are two

states associated with each other.

! Usually two or more radio buttons are linkedtogether as a group.They are linked in the sensethat only one of the buttons will be in its selected

state.

>>mcradiox



30/40


Editable Text! Used in situations that require the user to enter

strings or characters or numbers. The strings , in

turn, are used by the application for which theinterface has been built.

! Clicking anywhere within this object will change

the mouse from a pointer to a text insertionindicator.

>>mcedit, mceditf



31/40


List Boxes! New style provided by MATLAB 5.x

!

Very similar to pop-up menus.! The main difference with a list box is that you can

make the set of options visible to the user at alltimes.

>>mccheckbox

>>mclistbox



32/40


Pop-up Menus

!

Used in situations where multiple choices need tobe available to the user.

! When the user clicks and holds the mouse buttonanywhere within the object, a list of choicesappear.

>>mcpopup



33/40


Sliders! Useful in representing a fixed range of values

from which to choose.

! The slider has no way of explicitly indicating thenumeric value that the slider represents.Therefor, it is recommended that an editable text

or static text style uicontrol accompany theslider.

>>mcslider, mcslider2



34/40

I 34g p

Frames! Provide a solid background that helps blend a set

of uicontrols into one complete and cohesiveinterface.

! Used as an effective method of organizing theGUI in a logical and intuitive fashion.



35/40

I 35g p

Static Text! Available for creating labels, status messages or

other information pertinent to the user.

! Static text does not perform any action if the userclicks on any part of the object. In addition , theuser can not edit the information that is displayed.



36/40

I 36g p

Properties that Track User Actions! ButtonDownFcn-When clicking the mouse button while the pointer is located over or near the object.

! WindowButtonDownFcn- When clicking the mouse button down within the figure boundaries.

! WindowButtonUpFcn- When clicking the mouse button up within the figure boundaries.

! WindowButtonMotionFcn- When the mouse pointer moves within the figure boundaries.

!

KeyboardFcn- When the figure is active.! CreatFcn- When creating an object.

! DeleteFcn- When deleting an object.

! ResizeFcn- When resizing the figure.



37/40

Some useful instructions.

! AXES(axes_handle) - make the axes, current.

!Object_H=GCBO - to get the object that makethe callback.

! RBUTTON(Radio_H) - use to select and deselectradio buttons with the

same Tag Name



38/40

Setting figure.

! h0 = figure('Color',[0.8 0.8 0.8], ...

'Units','Normal', ...

'Position',[0.3 0.3 0.3 0.3], ...

'Tag','Fig1');

! %Setting figure name

! set(h0,'Name','Check and radio');



39/40

Setting Push Button.! h1 =uicontrol ('Parent',h0, 'Units','Normal','Position',[0.1

0.3 0.3 0.4] ,'Tag','Pushbutton1');

! %Setting the callBack Function

! set(h1,'Callback','Button_1_callBack_Function');

! %Setting the string on the button

! set(h1,'String','Push.B_1');! %Setting Tool Tip String

! set(h1,'TooltipString','Push Me To Call The CallBack Function!');

! %Setting The Text Color on the button (the foreground color)

! set(h1,'ForegroundColor',[0.0,.0,0.0]);

! %setting the background color

! set(h1,'BackgroundColor',[0.0,1.0,0.0]);



40/40

Edit - Box call back function.

! EditBox_H=GCBO;

! EditBoxString=get (EditBox_H,'String')

Basic Matlab and Gui

Documents