[ka-Map-users] Label collision between layers

Daniel.Huber at ch2m.com Daniel.Huber at ch2m.com
Thu May 10 17:47:12 EDT 2007

I've ran into this exact problem.  Even though I've set the mapfile to
not cache the labels layer, I still experience labels getting chopped
off at the tile boundaries.  And my labels are the last item to be


From: ka-map-users-bounces at lists.maptools.org
[mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of David
William Bitner
Sent: Thursday, May 10, 2007 3:21 PM
To: Kevin Okamoto
Cc: ka-map-users at lists.maptools.org
Subject: Re: [ka-Map-users] Label collision between layers

A compromise on this approach would be to have one layer with all the
labels for all the layers as Mathew wrote, but to not cache that layer
so that you could always show only labels for the layers that are
displayed.  I am not exactly sure in kamap how this could be
implemented, but this would give you the speedy cachey goodness for the
basemaps and then it would just take a bit for the labels to show up. 

On 5/10/07, Kevin Okamoto <kevino at migcom.com> wrote: 

	That's not a bad idea; however, I think having a separate label
	go over well with our clients. Disassociating the labels with
their features
	might be more confusing and inconvenient.
	Thanks for the suggestion anyway.
	Matthew Perry wrote:
	> On 5/7/07, Kevin Okamoto <kevino at migcom.com> wrote:
	>> Hello,
	>> Is there a way to handle "label collision" between Ka-Map
layers? In 
	>> other words, is it possible to
	>> render two separate map layers so that there labels don't
overlap when
	>> they are overlayed on top
	>> of each other.
	>>  I know that  Mapserver is able to manage "label collision"
if the 
	>> layers are rendered as part of the
	>> same image/tile; however I haven't found anything that would
	>> labels between two separate
	>> map images/tiles.
	> One technique you might consider is to create a separate group
	> render only the labels. You wouldn't be able to toggle each
	> labels individually but at least the features can be toggled
and their 
	> labels will not conflict.
	ka-Map-users mailing list
	ka-Map-users at lists.maptools.org 

David William Bitner 
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