[Geoserver-users] SLD PointSymbolizer Font

GeoServer GeoServer User
1

GeoServer Users:

Can SLD specify a PointSymbolizer Font, such as TrueType Font, as a Mark Graphic / Symbol?
Can you share SLD example for this case?

Rick Smith

2

Smith, Richard C. ha scritto:

GeoServer Users:

Can SLD specify a PointSymbolizer Font, such as TrueType Font, as a Mark Graphic / Symbol?
Can you share SLD example for this case?

No, it's not possible at the moment. The SLD specification, as is, has no allowance for that. You can get away using a TextSymbolizer instead,
but that also means when symbols do overlap you'll only get one of
them renderer (label conflict resolution).

Cheers
Andrea

3

Andrea:

Thank you for your reply. TextSymbolizer was applied as a workaround
but, as you mentioned, has limitation with overlap.

The ability to exploit a variety of point symbol types is needed;
perhaps the SLD specification can be embellished and/or this capability
added to GeoServer.

Question: Is a "user-defined" Mark possible, that is, something other
than WellKnowName marks? If so, how would one accomplish that?

Thanks again,

Rick Smith
-----Original Message-----
From: Andrea Aime [mailto:aaime@anonymised.com]
Sent: Sunday, December 02, 2007 3:50 AM
To: Smith, Richard C.
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] SLD PointSymbolizer Font

Smith, Richard C. ha scritto:

GeoServer Users:

Can SLD specify a PointSymbolizer Font, such as TrueType Font, as a

Mark

Graphic / Symbol?
Can you share SLD example for this case?

No, it's not possible at the moment. The SLD specification, as is, has
no allowance for that. You can get away using a TextSymbolizer instead,
but that also means when symbols do overlap you'll only get one of
them renderer (label conflict resolution).

Cheers
Andrea

4

Smith, Richard C. ha scritto:

Andrea:

Thank you for your reply. TextSymbolizer was applied as a workaround
but, as you mentioned, has limitation with overlap.

The ability to exploit a variety of point symbol types is needed;
perhaps the SLD specification can be embellished and/or this capability
added to GeoServer.

Question: Is a "user-defined" Mark possible, that is, something other
than WellKnowName marks? If so, how would one accomplish that?

As a user, it's not possible. As a programmer, yes, it is, but it
requires some days of development.
I'm discussing the topic on the geotools devel now, but since this
is something that I would do in my spare time I cannot promise
anything about its availability.
It won't be included in geoserver 1.6.0 for sure, we can hope for
1.6.1 maybe. If you're in a hurry and want it now I can suggest:
* do it yourself, if you can code (I can help you setup the
   developer enviroment and the like)
* contract someone to do this development (for example TOPP,
   the company I work for)

Cheers
Andrea

5

I also have this problem. SLD just have 7 choices for a PointSymbol.

Do you have any advice for developing it myself?

Thanks!

Smith, Richard C. wrote:

GeoServer Users:

Can SLD specify a PointSymbolizer Font, such as TrueType Font, as a Mark
Graphic / Symbol?
Can you share SLD example for this case?

Rick Smith

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6

telstar ha scritto:

I also have this problem. SLD just have 7 choices for a PointSymbol.

Do you have any advice for developing it myself?

If you just want more symbols you can also use .gif/.png files,
or .svg files, as symbols. That's what most people
did so far.

Cheers
Andrea

7

Qi Tian ha scritto:

Thanks a lot ! I have try png and svg files successfully.
Another problem: The size of symbols is fixed in SLD file?
I want to change is size accords to map scale. Any good idea?

Create multiple rules in the sld, each one using a different
min/max scale denominator range. See how you can change styling
according to scale in the tiger_roads style used in the
default geoserver distribution.

And oh, please don't write me personal mail, use the mailing
list.

Cheers
Andrea