[mapserver-users] Still impossible to force labels inside their polygons?

[Lime, Steve D (DNR)]

It's tough to know what I'm looking at from the picture. What does the layer definition look like?

At the moment polygon label point computation tries a couple of approaches get a label point inside the polygon: 1) compute a center of gravity 2) if that computation doesn't work (e.g. point is too close to the edge) then a scanline-based process is used to sample possible positions. The mid-point of the longest y sample is used.

It's always trade-off with speed and the above seems a happy medium.

Steve

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Rahkonen Jukka
Sent: Tuesday, September 04, 2012 9:48 AM
To: 'Mapserver-Users (mapserver-users at lists.osgeo.org)'
Subject: Re: [mapserver-users] Still impossible to force labels inside their polygons?

Hi,

Thank you for the answer. A little screenshot shows an example with two label points  inside one polygon and one polygon without a label point at all. Perhaps we could have more accurate polygon label positioning on our wish list.

-Jukka Rahkonen-


Lime, Steve D (DNR) wrote:

> Aihe: RE: [mapserver-users] Still impossible to force labels inside 
> their polygons?
> 
> Yes, still impossible. POSITION CC + MINFEATURESIZE AUTO will get you 
> close. However, MINFEATURESIZE AUTO uses bounding box checks and 
> doesn't intersect a feature geometry with its label geometry.
> 
> Steve
> 
> -----Original Message-----
> From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users- 
> bounces at lists.osgeo.org] On Behalf Of Rahkonen Jukka
> Sent: Tuesday, September 04, 2012 9:17 AM
> To: 'Mapserver-Users (mapserver-users at lists.osgeo.org)'
> Subject: [mapserver-users] Still impossible to force labels inside 
> their polygons?
> 
> Hi,
> 
> Is the short answer by Stephen Woodbridge "No" in the tread 
> http://osgeo- 
> org.1560.n6.nabble.com/force-labels-to-fit-in-polygons-td4549296.html
> still valid?
> 
> I have been trying to label a polygon dataset with Mapserver 6.2 beta2 
> and some labels keep on falling outside their polygons.  By the way, 
> the thread contains an advice that does not work for me:
> " By the way, PROCESSING "LABEL_NO_CLIP=ON" will fix the label point 
> at the polygon center.
> -SteveW "
> 
> Is the solution to create a new layer with point-on-surface function 
> and label then this point layer?
> 
> -Jukka Rahkonen-
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