[mapserver-users] Rendering bridges

[Christy Nieman]

Hi,

If you draw it in two layers, one with the colour and width you want for 
the bridges, and the other with the road line to go on top, you will 
essentially cover up the end caps.  The bridges layer would have to come 
first in the mapfile, followed by the road line layer.

Christy
-- 
Christy Nieman
GIS Technician
DM Solutions Group, Inc.
Email: cnieman at dmsolutions.ca
Web: http://dmsolutions.ca
Web: http://research.dmsolutions.ca

On 02/03/2010 12:52 PM, Lime, Steve D (DNR) wrote:
> I don't believe this will get you the desired effect. You'll get the lines but you'll also get the line end caps. That's the real trick, turning those off. I'm not sure that you can.
>
> Steve
>
> -----Original Message-----
> From: Fawcett, David (MPCA)
> Sent: Wednesday, February 03, 2010 10:13 AM
> To: Lime, Steve D (DNR); tommasodb; mapserver-users at lists.osgeo.org
> Subject: RE: [mapserver-users] Rendering bridges
>
> The feature that he is referencing is just a line segment with an additional attribute of 'bridge=yes'.
>
>      * bridge: yes
>      * highway: trunk
>      * layer: 1
>      * name: Manchester Road
>      * ref: A56
>
> If you just wanted to use the road data and not create an additional bridges data set, you would likely need to split up the road features so that the segment that is a bridge is an individual feature.
>
> I haven't worked with any shapefile extracts from OSM, so the data may already be like this.
>
> Assuming that you have a line shapefile that has a column called 'bridge', you could set up two classes in your roads layer.  The first one would have an expression like ('[bridge] = 'yes') and the second class wouldn't have an expression so it would catch the rest of the lines.
>
> In the first class, you would stack two lines, the bottom one being the color of your bridge and wider than the roads line that will go on top of it.
>
> David.
>
> -----Original Message-----
> From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Lime, Steve D (DNR)
> Sent: Wednesday, February 03, 2010 9:50 AM
> To: tommasodb; mapserver-users at lists.osgeo.org
> Subject: RE: [mapserver-users] Rendering bridges
>
> What feature type are bridges represented with in OpenStreetMap?
>
> -----Original Message-----
> From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of tommasodb
> Sent: Wednesday, February 03, 2010 6:08 AM
> To: mapserver-users at lists.osgeo.org
> Subject: [mapserver-users] Rendering bridges
>
> Hallo list,
>
> how can I render road bridges, like in mapnik?
> (Example:
> http://www.openstreetmap.org/?lat=53.398022&lon=-2.352222&zoom=18&layers=null)
> Which symbol can I use?
>
> Greets,
> Tom
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