[Mapserver-users] Scale calculation

[Palle Due Larsen]

The browser doesn't modify anything. The resolution is a pseudo-figure,
mapserver has no way of knowing your screen resolution or even screen
size. However, if you print from a web page, both internet explorer 5.5+
and netscape 6.1+ will use a resolution of 96 dpi. If you put a
"RESOLUTION 96" in your mapfile, mapservers [scale] will be alright for
print. 

Best regards

Palle Due Larsen
Carl Bro GIS&IT

-----Original Message-----
From: "Valerio Noti" <noti at ciaoweb.it>
To: <mapserver-users at lists.gis.umn.edu>
Date: Thu, 27 Nov 2003 11:19:13 +0100
Subject: [Mapserver-users] Scale calculation

> Hi all,
> I'm trying to display a numeric map scale in my PHP_Mapscript
> application.
> I'm a little confused about image resolution.
> I red about 72 dpi resolution of mapserver images. So I used this
> value to
> calculate the scale. In an old thread someone wrote:
> 
> "72 dpi is actually a very poor choice these days - most users are
> looking
> at higher resolution screens, and if you're printing from a Web
> browser then
> your browser is going to use its OWN value for screen resolution when
> it
> generates the output image for printing (usually around 96 dpi, but
> it
> varies from one browser to another)".
> 
> Do the browser modify output resolution on the screen? if so, does it
> affect
> both screen and print resolution?
> Furthermore, if I open in a graphic software a map image saved in tmp
> directory, I can see that resolution is 200 dpi.
> 
> Thanks in advance
> 
> Valerio Noti
> noti at ciaoweb.it
> 
> 
> 
> 
> _______________________________________________
> Mapserver-users mailing list
> Mapserver-users at lists.gis.umn.edu
> http://lists.gis.umn.edu/mailman/listinfo/mapserver-users

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