[ka-Map-users] Drawing lines dynamically on top of kaMap

[ramesh karra]

Thanks!

How about using KaXmlOverlay with kaXmlLinestring
object. Has anyone used this successfully?

Thanks
Ramesh

--- Stephen Woodbridge <woodbri at swoodbridge.com>
wrote:

> ramesh karra wrote:
> > Thank you very much for the quick response
> stephen! I
> > will look into the archives.
> > 
> > I have a quick question -
> > 
> > What is the most efficient way to do this if the
> > number of points is small (say < 30).
> 
> I think some people have mentioned doing it in
> javascript. I forget 
> which library, but one of them has some basic line
> drawing capabilities. 
> I think you will find it in the archives, or someone
> else might respond 
> to this thread.
> 
> -Steve
> 
> > Thanks
> > Ramesh
> > 
> > 
> > --- Stephen Woodbridge <woodbri at swoodbridge.com>
> > wrote:
> > 
> >> ramesh karra wrote:
> >>> Hi,
> >>>
> >>> Currently, I can successfully display a map
> >> generated
> >>> from a map file using mapserver and kaMap. 
> >>>
> >>> I would like to know what is the best way to
> draw
> >> a
> >>> dynamic line(or route) as a layer on top of this
> >> map
> >>> given that the data I have is a sequence of
> points
> >>> represented by lattitude and longitude (and not
> in
> >>> some shape file or postgres db)
> >> Ramesh,
> >>
> >> There has been a lot of discussion on this, you
> >> might want to search the 
> >> archives. To summarize, there is no good way to
> do
> >> this on the client 
> >> yet. You can do it for a few line segments, but
> >> performance rapidly 
> >> degrades to unacceptable as you start pushing
> over
> >> about 50 points.
> >>
> >> I think what a lot of people, well those that
> have
> >> actually implemented 
> >> something are doing it server side. The scenario
> is
> >> as follows:
> >>
> >> 1) put your points into a session storage
> >> 2) modify the client to request a route image on
> >> viewport extents change
> >> 3) have a php, or cgi script read the session
> data
> >> and the viewport 
> >> extents and scale and generate an image that is
> >> returned to the client
> >> 4) have the client pin the image to the viewport.
> >>
> >> This is basically the way that google is doing
> it.
> >> You can get a little 
> >> bit smarter on the client to not make requests
> when
> >> the view port 
> >> extents change if you don't need to redraw the
> >> image.
> >>
> >> -Steve W.
> >>
> > 
> > 
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> > http://mail.yahoo.com 
> 
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com