quick python script to test mapnik rendering of gdal datasource

quick python script to test mapnik rendering of gdal datasource.sh

[ec2-user@ip-10-195-227-243 ~]$ python
Python 2.7.3 (default, Apr 30 2012, 21:18:10)
[GCC 4.7.0 20120416 (Red Hat 4.7.0-2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from mapnik import *
m = Map(400,500,'+proj=latlong +datum=WGS84')

m.background = Color('transparent')
s = Style()
r = Rule()
r.symbols.append(RasterSymbolizer())
s.rules.append(r)
m.append_style('My Style',s)
lyr = Layer('world')
lyr.datasource = Gdal(file='/home/ec2-user/329612o.tif')
lyr.styles.append('My Style')
m.layers.append(lyr)

m.zoom_to_box(lyr.envelope())
render_to_file(m, '/home/ec2-user/test.png')
save_map(m, 'test.xml')>>> m = Map(400,500,'+proj=latlong +datum=WGS84')
>>>
>>> m.background = Color('transparent')
>>> s = Style()
>>> r = Rule()
>>> r.symbols.append(RasterSymbolizer())
>>> s.rules.append(r)
>>> m.append_style('My Style',s)
True
>>> lyr = Layer('world')
>>> lyr.datasource = Gdal(file='/home/ec2-user/329612o.tif')
>>> lyr.styles.append('My Style')
>>> m.layers.append(lyr)
>>>
>>> m.zoom_to_box(lyr.envelope())
>>> render_to_file(m, '/home/ec2-user/test.png')
>>> save_map(m, 'test.xml')
>>> exit()
[ec2-user@ip-10-195-227-243 ~]$ ls -l test.png
-rw-rw-r--. 1 ec2-user ec2-user 52499 Jul 30 11:31 test.png
[ec2-user@ip-10-195-227-243 ~]$