×
Namespaces

Variants
Actions
(Redirected from How to plot sparklines)

Archived:How to plot sparklines using PySymbian

From Nokia Developer Wiki
Jump to: navigation, search

Archived.pngAquivado: 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All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices.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 (31 May 2013)

Contents

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

This page was last modified on 31 May 2013, at 04:09.
47 page views in the last 30 days.
×