How to get screen co-ordinates (pixels) from geographic co-ordinates

[Sandeep Kumar Jakkaraju]

My problem is

I have a shp file in which is unprojected .. in lon,lat co-ordinates
I create an image from that shapefile ..using php mapscript...

I have a gps coordinates of a point in (lon,lat) ... i want its
corresponding pixels in that image ... like (500,500)



Thanx

-- 
Sandeep Kumar Jakkaraju
WeBlog:
http://jakkarajus.blogspot.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapserver-users/attachments/20061004/bc9db6db/attachment.htm>