Setting line width according to scale

[Stephen Woodbridge]

This is clearly the "standard" way to do it based on most of the 
mapfiles I have seen or created. There is another way that you can do it 
by defining your widths in real units instead of pixels. This is done 
with SIZEUNITS, so if you set the width of the road in feet or meters 
then as you zoom in it will scale directly proportional to the zoom scale.

-Steve

Bart van den Eijnden (OSGIS) wrote:
> The best thing would be to define multiple classes for 1 layer, and use 
> MINSCALE, MAXSCALE on the classes.
> 
> I don't know of any way to do some kind of automatic/proportional 
> scaling, but maybe someone else knows  .....
> 
> Best regards,
> Bart
> 
> Ehud Shabtai wrote:
> 
>> Hi,
>>
>> After using mapserver for a while now, I decided to clean out some of
>> the mess I have in the map file.
>>
>> I'm using mapserver mainly for drawing roads of different classes. My
>> current configuration has about 8 different layers, all very similar
>> to each other except for the line width value. This seems like I'm
>> abusing the layer definition as these are not really different layers
>> but a hack to allow drawing roads in different widths according to the
>> scale.
>>
>> Is there a better way? Can I define the width to be proportional to
>> the current scale?
>>
>> I'm using a circle symbol to draw my lines.
>>
>> Thanks,
>>
>> -- 
>> Ehud Shabtai
>> http://www.freemap.co.il/map/
>>
>>
>>
>>  
>>
> 
>