Archived:How to plot sparklines using PySymbian

Comments

(no comments yet)

Log in or Join to leave comments.

Aquivado: Este artigo foi arquivado, pois o conteúdo não é mais considerado relevante para se criar soluções comerciais atuais. Se você achar que este artigo ainda é importante, inclua o template {{ForArchiveReview|escreva a sua justificativa}}.

All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices.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

Article Metadata

---

Tested with

Devices(s): Nokia N96

---

Compatibility

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

---

Article

Keywords: graphics, canvas

Created: cyke64 (15 Mar 2007)

Last edited: hamishwillee (08 May 2013)

Overview

Python has its drawing API very similar to PIL. Porting from PIL to S60 is very easy. Here's an example for porting a sparkline drawing function from Joe Gregorio's article at xml.com

Code

# import modules
from appuifw import *
import e32
 
lock = e32.Ao_lock()  # declare exit lock
c = Canvas()
app.body = c
draw = c._draw
 
# define colors
red, green, blue, gray = 0xff0000, 0x00ff00, 0x0000ff, 0x777777
 
def plot_sparkline(results, step=2, height=20, \
    min_m=None, max_m=None, last_m=None, \
    min_color=blue, max_color=green, last_color=red):
    coords = zip(range(1,len(results)*step+1, step), \
       [height - 3  - y/(101.0/(height-4)) for y in results])
    draw.line(coords, gray)
    if min_m:
        min_pt = coords[results.index(min(results))]
        draw.rectangle([min_pt[0]-1, min_pt[1]-1, min_pt[0]+1, min_pt[1]+1], fill=min_color)
    if max_m:
        max_pt = coords[results.index(max(results))]
        draw.rectangle([max_pt[0]-1, max_pt[1]-1, max_pt[0]+1, max_pt[1]+1], fill=max_color)
    if last_m:
        end = coords[-1]
        draw.rectangle([end[0]-1, end[1]-1, end[0]+1, end[1]+1], fill=last_color)
 
 
results = [88,84,82,92,82,86,66,82,44,64,66,88,96,80,24,26, \
        14,0,0,26,8,6,6,24,52,66,36,6,10,14,30]
plot_sparkline(results, 3, 30, min_m=1, max_m=1, last_m=1)
 
app.exit_key_handler = lock.signal
lock.wait() # Wait for exit

Postconditions

Sparklines

Related Links

How to draw shapes on canvas