Dane,

Many thanks to you for bothering to reply !

I downloaded "hello_world.zip" from 
"http://trac.mapnik.org/wiki/XMLGettingStarted";.
I downloaded "TM_WORLD_BORDERS_SIMPL-0.3.zip" from 
"http://thematicmapping.org/downloads/world_borders.php";.

I ran the programs included as follows :

ani...@linux:~/hello_world/xml_config> python world_map.py

and as expected I could see a world map !

Problem statement:
___________________________________________________
I converted the data from my database to a shape file as follows:

pgsql2shp -f ../data/myfile gis planet_osm_point -u anisha

The output of the above command is shown below:

Initializing... Warning, field addr:housenumber renamed to ADDR:HOUSE
Warning, field addr:interpolation renamed to ADDR:INTER
Warning, field admin_level renamed to ADMIN_LEVE
Warning, field construction renamed to CONSTRUCTI
Warning, field power_source renamed to POWER_SOUR
Done (postgis major version: 1).
Output shape: Point
Dumping: 
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 
[11365 rows].

In this way I just placed my shape file in the location of the default shape 
file and changed the name of the 
file in the world_styles.xml as follows:

<Parameter name="file">../data/world_borders</Parameter>

Now when I run the following command, I only get to see a blue screen in 
"hello_world_using_xml_config.png" !!!

ani...@linux:~/hello_world/xml_config> python world_map.py

PS: I did remove the previously generated "hello_world_using_xml_config.png" 
before generating a new one !

I wonder if something is wrong with my data !!
____________________________________________________________________

Please help !

-- 
Regards,
Anisha Kaul

> Anisha,
> 
> Your map is blank because you have not applied any styles to your map.
> You added the stylename "roads" to your layer, but you must attached
> the actual style to the Map as well.
> 
> Generally, if rendering OpenStreetMap data for the first time, users
> pull from the main OSM styles here:
> 
> http://svn.openstreetmap.org/applications/rendering/mapnik/README
> 
> However, these styles currently require at least Mapnik 0.6.1.
> 
> See also:
> 
> http://trac.mapnik.org/wiki/MapnikTutorials
> http://trac.mapnik.org/wiki/MapDesign
> 
> Dane
> 


-------------------------------------
Hi-Tech Gears Limited, Gurgaon, India




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