[ka-Map-users] Raster query with hilite / hilight

Samuel Hiatt samhiatt at gmail.com
Mon Jun 25 05:07:59 EDT 2007

Thanks for the reply.

Good news: I got my map returning the value of the pixel and then producing
a plot based on the value.  (I was finally able to find the php mapscript
code for it... documentation for the organization of program files is quite
lacking... perhaps I could help improve that somehow)..

Anyone else have some ideas on how to hilight all the matching pixels?  I
think I've read that someone has been working on it, or I saw some hilight
methods in the code somewhere.  Ideas?  Anyone?

Thanks for the help!


On 6/23/07, Lorenzo Becchi <lorenzo at ominiverdi.com> wrote:
> Hi Sam,
> >
> >
> > What I need to do is first, be able to query the map to get the pixel
> > value
> > of the point clicked...
> this should be already supported by query system.
> > then, I would like any pixel in the map with the same value to be
> > hilighted.
> this is much more complicated.
> I would solve this with dynamic layer generation but it's not that easy.
> I've started writing a dLayer system to make this kind of things easier
> but I've never finished due to other priorities.
> If you're good with JS, php and Mapscript you can have a look to hilite
> , wps, kaRouting tools. They use the same principle but they are not
> simple scripts and there's no documentation. You'll need to do a good
> dive in the code.
> ciao
> Lorenzo
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