[ka-Map-users] legend tree

Luca Casagrande luca.casagrande at gmail.com
Tue Feb 3 08:02:56 EST 2009

Really great work Marco!!
I am to see another project with PyWPS :)

See you on IRC


2009/2/3 marco barra <marco.barra at gmail.com>:
> Hi all, i've modified kalegend.js, implementing a tree legend, to group
> layers in subgroups.
> I'm not a javascript guru, but it works fine for my  purposes.
> You can see a simple example, based on spearfish dataset, at
> You can define the subgroups in the mapfile, using  "subgroup"
> "aaaa|bbbb|cccc", in metadata section of the layer object.
> Using  "subgroup" "aaaa|bbbb|cccc", the legend looks like
> aaaa
>     bbbb
>         cccc
>             layer
> You can also specfy if a group has to be closed when the application is
> initialized, using ":c" ;
> so if you use "subgroup" "aaaa|bbbb:c|cccc"
> the legend looks like simply
>  aaaa
>      bbbb
> If more layers belongs to the same subgroup and you want the subgroup
> closed at startup, there is no need to specify :c for each layers, simply
> specify :c only for one of them.
> I've also modified  the mechanism to manage layer's minscale/maxscale.
> Normally if a layer is not visible at current scale, this layer disappear
> from the legend. But in my opinion, this behaviour can create a  mismatch
> for an end user. So in my kalegend, when a layer is not visible, it becomes
> red in legend (as slope and aspect in the demo), and when mouse is over it
> in the legend a message appears.
> In my kalegend.js I've tagged all my changes to make it clear.
> If someone is interested he can get the code at
> In the package you will find kalegend.js, kamap.js and init.php (i've
> modified this last two files only to manage "subgroup" option in layer's
> metadata).
> For the future i'll develope a system to manage layers drawing order,
> separated from the main legend, something like a second panel where manage
> various options, because currently using subgroup you can move only layers
> inside the subgroup.
> I'm developing/modifying others tools for Ka-map, as you can see at
>, but they are still in
> alpha status. There are more problems connected with the use of this tools,
> the first and most important is related with the managment of them (I've
> planned to develope a tools manager to solve various problem).
> I'll share them as soon as possible :-).
> Any suggestions, help or problem reporting will be appreciated.
> Cheers Marco
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/ka-map-users

"Please consider the environment before printing this email."

Dott. Luca Casagrande
Dipartimento di Ingegneria Civile ed Ambientale
Sezione Idraulica Agraria e Forestale
Università degli Studi di Perugia
Borgo XX Giugno, 74,
06121  Perugia

tel 0755856051
cel +39 3455993106
skype lucacasagrande

More information about the ka-Map-users mailing list