[OpenLayers-Users] Labels cut and repeated on tilling

[Andrew de Klerk]

Kusum

 

Google is not using openlayers, and they have their own custom backend
server for the WMS (I think?). The tiling is really a factor of the backend
server i.e mapserver, geoserver etc . If you are using mapserver, this post
explains it
http://www.nabble.com/duplicate-labels-problem-using-mapserver-ka-map-td6531
054.html#a6531054

 

Currently there is no workable option for mapserver. I am interested to know
if other geoserver or mapnik users experience the same problem.

 

Andrew

 

From: kusum [mailto:kusum at infobase.in] 
Sent: 13 March 2008 08:41 AM
To: Andrew de Klerk; users at openlayers.org
Subject: Re: [OpenLayers-Users] Labels cut and repeated on tilling

 

Hi Andrew

 

Thanks for replying.

But There must be some other way because other sites such as Google are
rendering multiple layers using openlayers and there is not repetition or
cutting. Also they are showing multiple layers.

 

Please Suggest.

 

Kusum

 

 

From: Andrew <mailto:andrew.deklerk at gmail.com>  de Klerk 

Sent: Thursday, March 13, 2008 11:33 AM

To: users at openlayers.org 

Subject: Re: [OpenLayers-Users] Labels cut and repeated on tilling

 

Hi kusum

 

This is not really an openlayers issue. You are probably using mapserver to
generate a WMS. This is a known issue when creating tiles. Labels are
repeated for each tile in the case of polygons, and are sometimes cut
off/duplicated for lines. Unfortunately, there is no real workaround for
this yet. Some have mentioned to use tilecache between mapserver and
openlayers, but I have tried this, and had no joy. Using mapnik for your WMS
may solve the issue, but I have not tried this. The way I have solved this
is by creating two WMS layers: 1 tiled one for my data, and one untiled one
for my labels. Not ideal.but it works.

 

Good luck

Andrew

 

From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] On
Behalf Of kusum
Sent: 13 March 2008 07:42 AM
To: users at openlayers.org
Subject: [OpenLayers-Users] Labels cut and repeated on tilling

 

 

 

Hi All

 

I am new to openlayers.

The map shown with tiles has labels that are being cut at borders and get
repeated when I zoom in.

 

Any one knows the solution for this??

 

Kusum

 

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