[Geoserver-users] CSS style, unit of measure, expression

GeoServer GeoServer User
1

Hi all,

I'm using CSS styling, which works great, but I have an issue with unit of
measure for a value that is calculated with an expression. According to this
post: http://geo-solutions.blogspot.it/2014/01/css-uom.html the uom
annotations are now supported in SLD, so they are not converted by CSS
module. So how to use uom with an expression? My old SLD was:

          <PointSymbolizer
uom="http://www.opengeospatial.org/se/units/metre&quot;&gt;
            <Graphic>
              ...
              <Size>
                <ogc:Mul>
      <ogc:PropertyName>length</ogc:PropertyName>
                  <ogc:Literal>6</ogc:Literal>
                </ogc:Mul>
              </Size>
            </Graphic>
          </PointSymbolizer>

How can I achieve this with CSS?

Thanks!

Lukasz

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2

On Fri, Feb 14, 2014 at 11:37 AM, uki <ukiz@anonymised.com> wrote:

Hi all,

I'm using CSS styling, which works great, but I have an issue with unit of
measure for a value that is calculated with an expression. According to
this
post: http://geo-solutions.blogspot.it/2014/01/css-uom.html the uom
annotations are now supported in SLD, so they are not converted by CSS
module. So how to use uom with an expression? My old SLD was:

          <PointSymbolizer
uom="http://www.opengeospatial.org/se/units/metre&quot;&gt;
            <Graphic>
              ...
              <Size>
                <ogc:Mul>
                  <ogc:PropertyName>length</ogc:PropertyName>
                  <ogc:Literal>6</ogc:Literal>
                </ogc:Mul>
              </Size>
            </Graphic>
          </PointSymbolizer>

How can I achieve this with CSS?

Hmm... something like this I believe (but I haven't tried it):

mark-size: [6 * lenght]m

and if that does not work, maybe this:

mark-size: [strConcant(6 * lenght, "m")]

I don't remember if this is available only on the 2.5.x series, or is also
backported
to a recent 2.4.x release.

Cheers
Andrea

--
== Our support, Your Success! Visit http://opensdi.geo-solutions.it for
more information ==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

3

Hi Andrea, I have tried both options, none of them work in my 2.4.4 version.
Should I try 2.5?
Thanks!
Lukasz

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4

On Fri, Feb 14, 2014 at 12:04 PM, uki <ukiz@anonymised.com> wrote:

Hi Andrea, I have tried both options, none of them work in my 2.4.4
version.
Should I try 2.5?

If you have time, yes, right now I cannot check what actual version would
work

Cheers
Andrea

--
== Our support, Your Success! Visit http://opensdi.geo-solutions.it for
more information ==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

5

As a temporary workaround to use in my 2.4.4 version I put:

mark-size: [20000 * length / env('wms_scale_denominator')]

Looks ok on my screen, but I'm not sure how robust this is.

Lukasz

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