MapScript and GeoTiff output

[Armin Burger]

Frank,

thanks a lot, that did the trick.

Armin


> On Tue, 15 Mar 2005 08:01:50 +0100, Armin Burger <armin.burger at gmx.net>
> wrote:
> > Hi everybody,
> >
> > When I use the shp2img tool and select as output format 'GTiff' the tool
> creates a true GeoTiff, with the georeferencing and coodinates information
> of the map file.
> >
> > I would like to produce a GeoTiff output with PHP/Mapscript. I tried
> >
> > $mymap->selectOutputFormat("GTiff");
> > $mapImg = $mymap->draw();
> > $mapImg->saveWebImage();
> >
> > using the same mapfile as with shp2img, but the output is just a plain
> tiff, no georeferencing etc., just pixel coordinates. I this a bug or is
> just the shp2img (and maybe CGI mapserv) producing true GeoTiffs? I tried
it
> PHP/with Mapserver 4.4 and 4.5.
>
> Armin,
>
> I think the problem is that the saveWebImage() call does not include the
> map, and without the map, MapServer is unable to associate a
> projection and extent with the file.  It looks like the saveImage() method
> would do the trick, but you will need to supply an explicit filename
> yourself, and also the map object used to render it (for georeferencing).
>
> Perhaps:
>
>  $mymap->selectOutputFormat("GTiff");
>  $mapImg = $mymap->draw();
>  $mapImg->saveImage("/tmp/my.tif", $mymap);
>
> Best regards,
> --
>
---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent
>

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