Coordinate Systems

[Ryan Ollerenshaw]

These numbers are to large to be Lat/long values, so if they are meters from a
projection where is this projection originating from?  If it is from the prime
meridian and equator then there must be a way to get mapserver to accept
lat/long values and do the conversion to meters on the the fly.

Quoting "Fawcett, David" <David.Fawcett at state.mn.us>:

> Ryan,
>
> Are these degrees of Long/Lat, or are they meters from a projection like
> UTM.
>
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
> Behalf Of Ryan Ollerenshaw
> Sent: Friday, June 30, 2006 11:05 AM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: [UMN_MAPSERVER-USERS] Coordinate Systems
>
>
> I keep on seeing lat/long values represented as large integer number and
> I am unsure how this conversion is made.  For example 356800E, 5767999N
> I assume maps to a specific lat/long location but how do I determine
> exactly where.
>
> My problem is that I need to create world files for several aerial
> photos that have lat/long values in the title but I am not sure how to
> georeference these images using MapServer.
>
> Example file name: thm_dir_N00_000.png, them_dir_N00_030.png
>
> Also,
> I believe that I can use gdal_translate to georeference these images
> would the correct format be: gdal_translate -a_ullr 180 0 210 -30
> thm_dir_N-30_180.png thm_dir_N-30_180.tiff
>