[mapserver-dev] RFC-60: Label enhancement to skip ANGLE FOLLOW labels with overlapping chars

Alan Boudreault aboudreault at mapgears.com
Fri Aug 27 11:39:38 EDT 2010

Daniel and I discussed about this issue... and something we could do is to let 
the user the ability to ONLY discard labels that are overlaping themself by 
the interior of the line (Not sure how to explain that term) by setting a 
negative value to MAXOVERLAPANGLE. Here's the behavior in images:

 http://dl.mapgears.com/ab-tmp/maxoverlapangle.png (Check the labels Whites 
Creek Lane, South Avenue and North Avenue)

On August 27, 2010 10:44:20 am Stephen Woodbridge wrote:
> On 8/27/2010 9:52 AM, Smith, Michael D ERDC-CRREL-NH wrote:
> > Jeff et al,
> >
> > My recommendation would be that if its a change in behavior, the make it
> > explicit to turn it on, not explicit to turn it off.
> >
> > I do think this will be a very important addition to labeling.
> I think we need to take into account the bigger picture for this
> release. 6.0 is a major release and we expect that there will feature
> changes that will break backwards compatibility. I think we should make
> this decision based on what other things are also changing. For example
> do we have other mapfile changes that will break compatibility? Will the
> rendering changes break compatibility? Others changes. If this is the
> only significant change to the mapfile that might break compatibility
> then I might be more persuaded to to worry about backwards compatibility.
> I think one of the on going goals for mapserver is to simplify mapfiles
> going forward. If I have to add a new keyword to activate every new
> feature this is not going to meet that goal.
> While I am one that usually fights for backwards compatibility, I do not
> think it is a simple decision on a major release like 6.0.
> -Steve W
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Alan Boudreault

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