# Archived:Using graphs in PySymbian

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All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices. It is not possible to submit apps to Nokia Store.

This PySymbian code snippet shows how can to plot graphs for user given inputs.

Article Metadata

Tested with
Devices(s): Nokia N96

Compatibility
Platform(s): S60 2nd Edition, S60 3rd Edition

Article
Keywords: graphics
Created: ck.umraliya (19 Jul 2008)
Last edited: hamishwillee (31 May 2013)

## Code

`# import modulesimport e32, appuifw,graphics # Define quit functiondef quit():    app_lock.signal()                        def draw():     # Get number of graphs    t = appuifw.query(u"Enter Number Of Graphs: (Max 9)","number")     #title of the application    appuifw.app.title = u"Graphs"     # Get range    rrng = appuifw.query(u"Maximum Range Of Graph:","number")     # Graph colors    colors = [0x0000ff,0x00ff00,0xff0000,0xffff00,0xc0c0c0,0x808040,0xff00ff,0xf0cb75,0xbe6a0e]     # Get graph prameters    y = []    n = []    for j in range(t):        (n1,y1) = appuifw.multi_query(u"Title Of Graph %d:"%(j+1),u"Height Of Graph %d:"%(j+1))        n.append(n1)        y11 = int(y1)        y.append(y11)     # Define canvas    canvas=appuifw.Canvas()    appuifw.app.body=canvas    xx,yy = canvas.size     # Scaling Graphs according to screen size    arrg = float(yy-50)    mf = arrg/rrng     # Draw x,y axis    canvas.line((20,yy-20,xx-32,yy-20), 0)    canvas.line((xx-33,10,xx-33,yy-20),0)     # Put indicator points    canvas.text((xx-34,30+(yy-40)*0.75),u"_%d"%(rrng*0.25))    canvas.text((xx-34,30+(yy-40)*0.5),u"_%d"%(rrng/2))    canvas.text((xx-34,30+(yy-40)*0.25),u"_%d"%(rrng*0.75))    canvas.text((xx-34,30),u"_%d"%(rrng))     # Draw graphs    h = 30    for i in range(t):        w=(xx-57)/t - 10        s = yy-20-mf*y[i]        canvas.rectangle((h,s,h+w,yy-20), outline=0x000000, fill=colors[i])        x11 = str(y[i])        canvas.text((h,(s-5)),u" %s"%(x11), fill=colors[i])        canvas.text((h,yy), u"%s"%(n[i]), fill=0x4b2192)        h=h+w+10draw() #the code will allow the user to exit the application when he presses the exit keyappuifw.app.exit_key_handler=quit  app_lock=e32.Ao_lock()app_lock.wait()`

## Postconditions

Once the graph is drawn a screenshot function can be used to save the image if user wants. Following images are the outcome of above code.

 Number of Graphs Maximum Range
 Graph Parameters Plotted Graphs

## Related Links

This page was last modified on 31 May 2013, at 03:10.
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