[mapserver-dev] LABEL FORCE GROUP - undocumented keyword

[Lars Schylberg]

Hi Seth and all,

It is mentioned in the release notes for 6.2. 
https://mapserver.org/development/announce/6-2.html:

"Inside a LABEL, a new FORCE GROUP parameter determines if the current 
label is allowed to intersect other labels from the same feature or not, 
and multiple STYLE blocks can be used to render graphic symbols instead 
of or alongside the text."

I remember using it when I did some nautical S52 signs a couple of years 
ago.  I would guess that the MET people also are using it to do their 
complex signs.

All the best,

/Lars Schylberg


Den 2020-07-11 kl. 00:03, skrev Seth G:
> Hi all,
>
> I'm currently trying to validate various Mapfiles in msautotest.
> One keyword I'm unsure about is LABEL>FORCE>GROUP.
>
> There is no mention of the "GROUP" option in the docs - https://mapserver.org/mapfile/label.html#mapfile-label-force
>
> It is however used in an msautotest Mapfile: https://github.com/mapserver/mapserver/blob/85e294e8c8ce3c9c455fea0137d4af1ee2feced0/msautotest/renderers/multilabel-leader.map
>
> It is also referenced in mapfile.c and sets the MS_LABEL_FORCE_GROUP flag.
> https://github.com/mapserver/mapserver/blob/963edab43c3f0166a9f3630771b310810ec93eb5/mapfile.c#L1597
> However I can't see anywhere where this option is used or what effect is has.
>
> Any further information on this keyword appreciated,
>
> Seth
>
> --
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