How To Calculate Circle Area And Circumference Using GUI Matlab

What Will I Learn?

• You will learn about matlab programming
• You will learn about build a GUI using matlab
• You will learn about Circle Area
• You will learn about Circle Circumference

Requirements

• You must have a passion
• You must have matlab basic
• You must have interest

Difficulty

• Intermediate

Tutorial Contents

In this tutorial, I decide to make a matlab tutorial. Because I think, matlab tutorial is still little. Matlab programming will give us a lot of conveniences, especially on GUI .

The functions of GUI are to provide ease in accessing something. And the user will be helpful with that view.

For now I will show how to make a matematics GUI, like calculate Circle Area and Circle Circumference.

We just need to input the radius value for it. And don't foget the formula of that things.

Circle Area = phi * radius * radius
Circle Circumference = 2 * phi * radius

Equipment

For equipment we just need a Matlab Application, you can use the anything version. For now I use Matlab r2014b.

Steps

1. First run your matlab application, and open New>>Graphical User Interface. Until appear the picture like the following.
   

2. Lets start to design the GUI based on components like as.
   

   

3. Arrange the components at the above untill similar with this picture.
   

   

4. After that, open the editor above GUI that have we designed.
   

   

5. Then let's start to make the syntax. The existing syntax should not be deleted, we just must to add some syntaxs to below the functions. For details you can see these pictures:
   At function edit1_Callback:
   

   
   The syntax list is:

function edit1_Callback(hObject, eventdata, handles)
radius=str2num(get(handles.edit1, 'String'));
handles.radius=radius;
guidata(hObject, handles)

At function btn_calculate_Callback:

The syntax list is:

function btn_calculate_Callback(hObject, eventdata, handles)
radius=handles.radius;
area=pi * radius * radius;
circum=2 * pi * radius;
set(handles.edit2, 'string', area);
set(handles.edit3, 'string', circum);

At function btn_exit_Callback:

The syntax list is:

function btn_exit_Callback(hObject, eventdata, handles)
delete(handles.figure1)

1. Last, run the program and your GUI will be saved automatically.
   

input "10" in radius column, and click calculate

And finally our GUI has finished.
If you need the full syntax, you can download it on Google Drive.

Thank you for your visiting.

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