David,
That did work, although I could have sworn that was the first thing I tried!
Thanks for your help :)
From: David Winslow [mailto:[email protected]]
Sent: 11 May 2012 3:34 PM
To: Chris Haste
Cc: Charles Galpin; [email protected]
Subject: Re: [Geoserver-users] Another CSS question
Well, there are actually two kinds of functions in GeoServer CSS: css functions
like url() and symbol(), and CQL functions like [strConcat]. Implementation
wise, there is no effort to combine the two (and the error message you get
indicates I didn't even do a very good job of reading expressions that mix them
:P).
You MAY be able to get it working by using the same syntax you would in SLD:
mark: url("wind/wind${strConcat(fixedspeed, northernhemisphere)}.svg");
If it doesn't work, please let me know (or if you have a Github account you can
file a bug on the GeoScript scala project yourself):
https://github.com/dwins/geoscript.scala/issues?direction=desc&labels=css&sort=created&state=open
--
David Winslow
OpenGeo - http://opengeo.org/
On Fri, May 11, 2012 at 10:26 AM, Chris Haste
<[email protected]<mailto:[email protected]>> wrote:
Thank you to both of you.
That does work fine.
My last issue is around converting the following to CSS
<OnlineResource xlink:type="simple"
xlink:href="wind/wind${strConcat(fixedspeed, northernhemisphere)}.svg" />
<Format>image/svg+xml</Format>
Even when I try and break this down to something quite simple e.g.
mark: url(strconcat('wind/wind50','.svg'));
in order to try and work out where things are going wrong it generates an
exception; org.apache.wicket.WicketRuntimeException:
javax.xml.transform.TransformerException: Translator error
Any ideas on how to achieve this?
From: David Winslow [mailto:[email protected]<mailto:[email protected]>]
Sent: 11 May 2012 2:36 PM
To: Charles Galpin
Cc: Chris Haste;
[email protected]<mailto:[email protected]>
Subject: Re: [Geoserver-users] Another CSS question
What Charles suggests should work just fine. I would also like to point out
that [if_then_else] is just a filter function and works fine in CSS.
* {
mark-rotation: [
if_then_else(equalTo(fixedspeed, 0),
0,
toDegrees(angle)
)
]
}
As long as you're good at counting parentheses it's not too bad :P
--
David Winslow
OpenGeo - http://opengeo.org/
On Fri, May 11, 2012 at 8:53 AM, Charles Galpin
<[email protected]<mailto:[email protected]>> wrote:
Hi Chris
You take advantage of the cascading rules in CSS so you would default it to
zero, then add a rule to rotate. I believe something like this will work
* {
mark-rotation: 0
...
}
[fixedspeed != 0] {
mark-rotation: [toDegrees(angle)];
}
hth
charles
On May 11, 2012, at 8:23 AM, Chris Haste wrote:
Hello all / David,
I have yet another CSS question...
Assuming it is possible, how would you represent the following SLD as CSS?
<Rotation>
<ogc:Function name="if_then_else">
<ogc:Function name="equalTo">
<ogc:PropertyName>fixedspeed</ogc:PropertyName>
<ogc:Literal>0</ogc:Literal>
</ogc:Function>
<ogc:Literal>0</ogc:Literal>
<ogc:Function name="toDegrees">
<ogc:PropertyName>angle</ogc:PropertyName>
</ogc:Function>
</ogc:Function>
</Rotation>
Thanks
Chris
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