mapserver different coordinate system

Sebastian Walter sebastian.walter at FU-BERLIN.DE
Fri Aug 31 07:29:51 EDT 2007


Hi Vishal,

I would recommend you to try to get your data in a GIS system first to
understand the spatial dependencies of your different datasets. Maybe
you want to try GRASS GIS:

http://grass.itc.it/

Here you will find some information about projections in general:
http://en.wikipedia.org/wiki/Map_projection

The process of georeferencing your data would be to write a "world"-file
for your tif (you can do it in degrees) and also for the other files (I
don't know either DGN or dt2; what kind of data is it? Vector or
raster?). You need to know the projections of your data.

You can convert DD in Meters using the proj utility (part of the proj
library):
http://www.remotesensing.org/proj/

In the manuals you will also find good information about projections.

Regards,
Sebastian

Vishal Nagpal wrote:
> Hi,
> Sorry if its duplicate,
> 1. I have been able to get the RASTER FILE(TIF) to display using the
> projections, I have still not been able to understand
>  projection concept to the core( I am still hopefull and working on it any
> tutorial).
>
> 2.  problem I am facing is that I have different layers in
> different coordinates and thus units, I have a DGN file with extents from -ve to
> +ve in METERS, where as the TIF file has it in  DD, I need to use the
> mapfile for the display of both layers possibly together.
>
> 3.  Also the dt2 file (Again DD) which I have opened using
> projections is displaying the height but in a distorted manner.
>
> Vishal
>   



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