SIZE in percentages?

[Bart van den Eijnden (OSGIS)]

Hi Steve,

unfortunately this can't be applied to a WMS use case. There is no way to
override resolution (changing the WMS server MAP file thorugh Mapscript is
no option ofcourse). So the only way then is to have multiple MAP files, and
no way to link them using OGC interfaces .... ? That does not sound ideal to
me, and would require a very specific non-standard WMS client.

Alternatively, a resolution parameter should be added to the OGC GetMap
interface, maybe as a vendor-specific tag for now.

Best regards,
Bart

>
Using symbol scales and then tweaking the resolution parameter is the built
in way to do this.
Symbol scale set the scale at which a symbol or label is exactly SIZE pixels
tall. The resolution
parameter (map level) affects the way in which scales are computed. The
default is 72 pixels
per inch which works ok for monitors but is too low for print, where value
of 300 or higher might
work better.

Steve

>>> On 5/16/2007 at 1:49 PM, in message
<d9824c396b0ffd49c957786adb749aff at 83.87.144.191>, "Bart van den Eijnden
(OSGIS)" <bartvde at OSGIS.NL> wrote:
> Hi list,
> 
> we've got a problem with labels getting too small in a PDF print (not
using
> Mapserver's PDF output btw). The WMS image requested for the PDF print is
> approximately 2000 x 1500 pixels, and then squeezed into an A4 PDF to get
an
> appropriate resolution for prints.
> 
> But since labels are 9 pixels only (the same MAP file is also used for a
> webmapping application with a 600 x 400 map), they end up being too small.
> 
> Is there an option to have something like SIZEUNITS percentage, and then
use
> for instance a percentage of the image height for labels?
> 
> Other options currently available already?
> 
> Thoughts on this issue/enhancement appreciated.
> 
> Best regards,
> Bart
> 

--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl