Thanks for the info Steve, that makes sense - when Groups are used to link related layers things get too ambiguous. We'll look at our options with this one.
Cheers Andrew On 07/09/2012 17:22, "Lime, Steve D (DNR)" <[email protected]> wrote: >Legend icon only works with layers. Groups are just too ambiguous to >uniquely identify the class to be rendered. Groups don't have to be >organized by scale ranges. Often they link related layers, for example a >bunch of road feature types. I think It would be possible to add support >to see if a group name can resolve to a single layer based on scale but >that doesn't exist in the code at this point. > >Steve >________________________________________ >From: [email protected] >[[email protected]] on behalf of Andrew Cowie >[[email protected]] >Sent: Friday, September 07, 2012 10:46 AM >To: [email protected] >Subject: [mapserver-users] MODE=legendicon & GROUP Layers > >Hello list > >Wondering if anyone can helpŠ > >We have been utilising the legendicon mode to create a custom legend in >our application, however some recent work to try and speed up our WMS has >reworked our mapfiles slightly, making use of GROUP LAYERs to group >almost identical LAYERs together, the only difference in the LAYERs being >MAX & MINSCALEDENOM and the DATA request string to our PostGIS database >hitting a generalised version of the geometry at smaller scales. > > LAYER > NAME 'lri_luc_main_gen_500k' > GROUP 'lri_luc_main' > DATA 'the_geom_gen_500k FROM "data"."lri" USING UNIQUE >gid USING srid=2193' > INCLUDE 'includes/lri_luc_main_layer.inc' > MINSCALEDENOM 251001 > END > LAYER > NAME 'lri_luc_main_full' > GROUP 'lri_luc_main' > DATA 'the_geom FROM "data"."lri" USING UNIQUE gid USING >srid=2193' > INCLUDE 'includes/lri_luc_main_layer.inc' > MAXSCALEDENOM 251000 > MINSCALEDENOM 15000 > END > >The request for the legend icon is of the form: > >http://<servername>/cgi-bin/mapserv.fcgi?FORMAT=image/gif&MAP=lri.map&MODE >=legendicon&ICON=lri_luc_main,1 > >This worked fine before we started using GROUPs, however now we now >encounter the error: > >mapserv(): Web application error. Icon layer=lri_luc_main not found in >map file. > >Does the legendicon mode work with GROUP layers? >If not, is there a way round this? > >Or alternatively, perhaps there is a better way to request a generalised >version of the geometry that doesn't involve GROUP LAYERs? > >Any help or suggestions much appreciated. > >Many thanks > >Andrew > >________________________________ >Please consider the environment before printing this email >Warning: This electronic message together with any attachments is >confidential. If you receive it in error: (i) you must not read, use, >disclose, copy or retain it; (ii) please contact the sender immediately >by reply email and then delete the emails. >The views expressed in this email may not be those of Landcare Research >New Zealand Limited. http://www.landcareresearch.co.nz > Please consider the environment before printing this email Warning: This electronic message together with any attachments is confidential. If you receive it in error: (i) you must not read, use, disclose, copy or retain it; (ii) please contact the sender immediately by reply email and then delete the emails. The views expressed in this email may not be those of Landcare Research New Zealand Limited. http://www.landcareresearch.co.nz _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
