how to make pushbutton work fast

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........................
 ..............................

Answer 1

[Azzi Abdelmalek]

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

[Soni huu]

sorry... im newbe .. can make code if to read the data use this code;

 RainData = ReadManySoniData( 'C:\matlab7\work\org\2011', '*.dat' );

[Azzi Abdelmalek]

In opening function, after your reading data

handles.data=RainData
guidata(hObject,handles)

In pushbutton function read your data

RainData=handles.data

[Soni huu]

handles.data=RainData
guidata(hObject,handles)

To read your data in pushb function

RainData=handles.data

????

[Soni huu]

ok... thanks..