place_frames.py

#!/usr/bin/env python

from PIL import Image

INFILE = 'place.csv' # expects ts (seconds), x, y, hex color (without #) sorted by timestamp
OUTDIR = 'place_frames' # a directory, expected to exist

def hex2rgb(h):
    return (int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16)) 

img = Image.new( 'RGB', (1001,1001), "white")
pixels = img.load() # create the pixel map

n = 0
prev_ts = 0
with open(INFILE) as f:
    for line in iter(f.readline,''):
        line = line.strip()
        ts, x, y, color = line.split(',')
        ts = int(ts)
        x = int(x)
        y = int(y)
        if ts != prev_ts:
            n += 1
            print 'saving %s/%u.png %7.3f%%' % (OUTDIR, prev_ts, n/(86400*.03))
            img.save('%s/%u.png' % (OUTDIR, prev_ts), 'PNG')
            prev_ts = ts

        pixels[x,y] = hex2rgb(color)