[mapserver-users] extracting geo data from a tiff

[Ben Madin]

Jess,

This might depend a little bit on what interface you are using to display the map. If you are using templates, you have access to the Map Geometry information, check out :

http://mapserver.org/mapfile/template.html#template

I think you can access similar information using OpenLayers.

If not, do you specify the IMGEXT of your map in your URL? Could you use this information?

cheers

Ben


On 01/05/2012, at 12:00 AM, "Jessica Clarke" <Jessica.Clarke at forestrytas.com.au> wrote:

> I'm trying to find out the geographic coordinates of an output map.
> Please correct me if there is an easier way, but I have added the GDAL/GTIFF output format to my mapfile, and I am calling it with ...&qformat=GTiff&... in my URL so that it selects that instead of the png output format (which is already in use by a large number of people).
>  
> What I want to do now, is produce a report that gives the top-left coordinate of the map.
> Is there a way to extract this information and produce a report?
>  
> My thought process at the moment:
> Include another outputformat which is text so my URL would be ...&qformat=GTiff+report&...
> But I'm not sure how to do that exactly, or how to extract the coordinates.
>  
> I have run GDAL info in cmd, so I'm aware of the data that is contained.
>  
> Any advice would be appreciated.  I am hoping I'm on the right track at the moment.

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