[Geoserver-users] GetLegendGraphic with SLD Transformation Functions does not work

GeoServer GeoServer User
1

Hi everybody,

I am trying to create a legend with an SLD file that uses the transformation
function Interpolate. Geoserver is able to render the objects with the
corresponding colors in the map, but when doing a GetLegendGraphic I got a
NPE, in which the lookupString becomes null.
        
String lookupString = lookup.evaluate(object, String.class);

Currently I am using Geoserver version 2.1.3.

Is this issue still an open problem or already solved with a newer one?

cheers Markus

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2

On Tue, Mar 26, 2013 at 11:43 AM, markusin
<markus.innerebner@anonymised.com> wrote:

Hi everybody,

I am trying to create a legend with an SLD file that uses the transformation
function Interpolate. Geoserver is able to render the objects with the
corresponding colors in the map, but when doing a GetLegendGraphic I got a
NPE, in which the lookupString becomes null.

String lookupString = lookup.evaluate(object, String.class);

Currently I am using Geoserver version 2.1.3.

Is this issue still an open problem or already solved with a newer one?

No, the generation of a proper legend out of interpolate/categorize/recode
functions is still missing.
Patches welcomed :slight_smile:

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 guess from the functionality it should be similar to the one in the Raster Color Map, isn't it?

cheers Markus

On Mar 26, 2013, at 12:27 PM, Andrea Aime wrote:

On Tue, Mar 26, 2013 at 11:43 AM, markusin
<markus.innerebner@anonymised.com> wrote:

Hi everybody,

I am trying to create a legend with an SLD file that uses the transformation
function Interpolate. Geoserver is able to render the objects with the
corresponding colors in the map, but when doing a GetLegendGraphic I got a
NPE, in which the lookupString becomes null.

String lookupString = lookup.evaluate(object, String.class);

Currently I am using Geoserver version 2.1.3.

Is this issue still an open problem or already solved with a newer one?

No, the generation of a proper legend out of interpolate/categorize/recode
functions is still missing.
Patches welcomed :slight_smile:

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

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

4

On Tue, Mar 26, 2013 at 12:43 PM, Markus Innerebner
<markus.innerebner@anonymised.com> wrote:

Hi Andrea,

I guess from the functionality it should be similar to the one in the Raster Color Map, isn't it?

Yes, I guess one could reuse code from that

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

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