Basic Matlab GUI

7/30/2019 Basic Matlab GUI

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I - 1Building a Graphical User Interface with MATLAB

Basic Matlab

Matr ix defini t ion

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

3 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


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Basic Matlab

Example

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

b=[a;a;a]

b= 1 2 3 4 5

1 2 3 4 5

1 2 3 4 5

Example

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

b=[a,a,a]

b= 1 1 1 1

2 2 2 2

3 3 3 3

4 4 4 45 5 5 5Examp le (transpose)

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

b=a

b= 1 2 3 4 5


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Basic Matlab

Str ings

a=[a,b,c]

a= abcb=[a;a;a]

b= abc

abcabc

Str ings

a=[a,b,c]

a= abcb=[a,a,a]

b= abcabcabc

Str ings

a=[a,b,c]

b=[a,c,c]c=(a==b);

c= 1 0 1


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Basic Matlab

1 2

3 4

5 67 8

6 8

10 12

19 22*

43 50

A

B

A B

A B

5 12. *

21 32

1 4. ^ 29 16

sin(1) sin(2)

sin( ) sin(3) sin(4)

A B

A

A


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Basic Matlab

A=zeros(a1, a2, a3, an);

A is an n dimensional matrix of zeros.

A=ones(a1, a2, a3, an);A is an n 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.


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Basic Matlab

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

and 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.


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Basic Matlab

Functions in Matlab

function [output variables]=function_name (input variables)

Input and output variables, can be of any type.


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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;

Basic Matlab

Functions in Matlab


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input:

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

output:

a = 10

b = hello

world

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 12

b = hello

world

c = 1 2 3 4 5

Basic Matlab

Functions in Matlab


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Basic Matlab

Bit-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.


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Basic Matlab

conditionsIf ( Boolean expression)

.

end;

Boolean exp ression== : Is Equal

~=: Not Equal

> : Is grater then< : Is less Then

>=: Is grater then or equal to


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Basic Matlab

conditionsswitch switch_expr

case case_expr,statement, ..., statement

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

...

otherwise,statement, ..., statement

end


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Basic Matlab

Loopsfor 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.


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Basic Matlab

Drawingplot(X,Y) plots vector Y versus vector Xy yellow . point - solid

m magenta o circle : dotted

c cyan x x-mark -. dashdot

r red + plus -- dashedg green * star

b blue s square

w white d diamond

k black v triangle (down)

^ triangle (up)

< triangle (left)

> triangle (right)

p pentagram

h hexagram


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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 Matlab

Drawing


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

Basic Matlab

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


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a=0:0.2:2*pi;

b=ones(1,length(a));

c=sin(a'*b);

figure;

subplot(1,2,1);

surf(c);

Basic Matlab

Drawing


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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 Matlab

Drawing


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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 Matlab

Some useful commands


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Basic Matlab

Adding a path to a library

1

2

3

4


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5

6

7

8

Adding a path to a library


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Basic Matlab

Adding a path to a library9

10


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Building GUIs with MATLAB

Oren Meirom

Omikron Delta

GUIs


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What is a Callback?

A callback is a sequence of commands which areimplemented by activating a graphics object:

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


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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


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Push/Toggle Buttons

The push button is widely prevalent uicontrolstyle that is used primarily to indicate that adesired action should immediately take place.

The toggle button look just like push button,

except there is no intermediate state.Rather, thebutton will remain in its selected or not selectedstate after the user clicks on it.

>>mcpush


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Check Box Useful for representing two states of an option

that you may want to provide (usually as on andoff).

In its off state the check box will consist of anempty or unfilled square. In the on state, the

check boxs square will contain a V sign.

>>mccheckbox,mccheckbox1


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Radio Button

Similar to the check box in that there are twostates associated with each other.

Usually two or more radio buttons are linkedtogether as a group.They are linked in the sense

that only one of the buttons will be in its selectedstate.

>>mcradiox


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Editable Text Used in situations that require the user to enter

strings or characters or numbers. The strings , inturn, are used by the application for which theinterface has been built.

Clicking anywhere within this object will changethe mouse from a pointer to a text insertionindicator.

>>mcedit, mceditf


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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


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Pop-up Menus

Used in situations where multiple choices need to

be available to the user.

When the user clicks and holds the mouse buttonanywhere within the object, a list of choices

appear.

>>mcpopup


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Sliders

Useful in representing a fixed range of valuesfrom which to choose.

The slider has no way of explicitly indicating thenumeric value that the slider represents.

Therefor, it is recommended that an editable textor static text style uicontrol accompany theslider.

>>mcslider, mcslider2


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Frames

Provide a solid background that helps blend a set

of uicontrols into one complete and cohesive

interface.

Used as an effective method of organizing the

GUI in a logical and intuitive fashion.


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Static TextAvailable for creating labels, status messages or

other information pertinent to the user.

Static text does not perform any action if the user

clicks on any part of the object. In addition , the

user can not edit the information that is displayed.


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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.


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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 thesame Tag Name


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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');


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Setting Push Button. h1 =uicon trol ('Parent',h0, 'Units', 'Norm al','Pos itio n ',[0.10.3 0.3 0.4] ,'Tag ','Pushbu tto n1');

%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]);


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Edit - Box call back function.

EditBox_H=GCBO;

EditBoxString=get (EditBox_H,'String')

Basic Matlab GUI

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