MATLAB: How to make pushbutton work fast

graphguiguidehandle graphicsmatlab guiread data

my pushbutton will process data to produce 26 different graph.. but pushbutton need +21 sec to create a graph, couse pushbutton will repeat read all data when i click.. then how to make pushbutton process the data without read all data every i click (just read data at firs click)

 RainData = ReadManySoniData( 'C:\matlab7\work\org\2011', '*.dat' ); 
% need 21 sec to read this data
 [ day_number, daily_rain ] = DailyRain( RainData, yearsh, monthnum);
 %yearsh get from popupmenu1
 %monthnum get from popupmenu2
 plot( day_number, daily_rain )
 ylabel........................
 ..............................

Best Answer

In opening function read all your data then use guidata to save your data in handles

handles.data=data
guidata(hObject,handles)

To read your data in pushb function

Data=handles.data

Related Solutions

MATLAB: How to insert mfile to GUI

Hi Soni,

You have to approach this in two steps. Firstly, you need to learn to use some basic features of GUIDE. Thus,

Watch the demo Creating a GUI with GUIDE. It is good!
Make a very simple GUI with three buttons, [Rain], [Sun], [Wind]. Pushing [Rain] shall show "It's raining" in the command window, etc.

When you are somewhat comfortable with doing the basic exercises you proceed to next step.

Design

Make a simple sketch of the GUI you want to develop. Search "Design a GUI" in the online help. Make another sketch until you are happy with it. Remember professionals at The Mathworks have refined these descriptions over many years.
Write a little description on how the user is supposed to use the GUI.
You should try to minimize the interaction between your domain specific functions (the code that deals with weather, rain, etc.), e.g ReadManySoniData, and the GUI-code. You do not want to have many versions of the domain specific functions.

Implementation

This code snippet is copied from the example "GUI with UiControls"

    % --- Executes on button press in calculate.
    function calculate_Callback(hObject, eventdata, handles)
    % hObject    handle to calculate (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)
    mass = handles.metricdata.density * handles.metricdata.volume;
    set(handles.mass, 'String', mass);

This function is called when the user push [Calculate]. I recommend that you include only a minimum of domain specific code in these callback-functions. Something like

    disp( 'calculate_Callback' ) % to know that the function is executed
    file_spec = handles.domaindata.file_spec; 
    RainData = ReadManySoniData( file_spec );
    handles.domaindata.RainData = RainData;

when you debug the callback-function put a breakpoint at disp(...).

Later this may be replaced by

   handles.domaindata.RainData=ReadManySoniData(handles.domaindata.file_spec);

Tip

An alternative to diagrams integrated in the GUI might be separate figures, e.g. created by plot. It is simple to implement. Cons: the GUI will be unhappy if you delete the figure without letting the GUI know and the figures tends to disappear under other windows. To avoid the latter download ALWAYSONTOP and run

    alwaysontop auto

before you start your GUI

Be aware that this is sketchy!

--- To be continued ---

MATLAB: Design a GUI for data analisys

Please view these excellent tutorials on creating a GUI: http://blogs.mathworks.com/videos/category/gui-or-guide/

Best Answer

Related Solutions

MATLAB: How to insert mfile to GUI

MATLAB: Design a GUI for data analisys

Related Question