Zooming to match a raster scale

[Bart van den Eijnden]

Hi Nick,

you can probably use a combination of mapxy and scale.

See Mapserver CGI reference:
http://mapserver.gis.umn.edu/doc44/cgi-reference.html

Best regards,
Bart

On Sun, 24 Apr 2005 22:38:34 +1000, Nick Dabner <dabner at OPTUSNET.COM.AU>
wrote:

> Hello list,
>
> I have a set of raster geotiffs tiled and working on mapserver 4.2 on
> osx (thanks to william k).
>
> When viewing the rasters in mapserver, I find they suffer from some
> slight scaling and never look anywhere near as good as the original
> files. I have given dithering and PNG24 a go, but see that I probably
> need to match my mapserver session's scale as close as possible to the
> source data scale. Does this sound right?
>
> Using CGI mapserver, how can I specify an exact viewing area (to match
> my calculations)? What argument would I choose.
>
> Attemping to pass IMGEXT=2482199.076569 4407814.492404 2484230.3854232
> 4406291.0107634 just returns an extent error. Oh, I am in Melb Aust, so
> these are real coords.
>
> Any other ideas? The next step would probably be fixed zoom levels for
> street, area, suburb, municipality and city or similar, with
> preprocessed rasters for each level.
>
> regards,
>
> Nick
>



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