OpenMap is slow..this is an unfortunate fact..I guess this is because of the
fact that it calculates screen coordinates by using projection class to
everytime to render the layers..This is what slows down OpenMap...
----- Original Message -----
From: "Mariusz Chmielewski" <mchmiel21_at_tlen.pl>
To: "Don Dietrick" <dietrick_at_bbn.com>; "OpenMap Support" <openmap_at_bbn.com>;
<openmap-users_at_bbn.com>
Sent: Monday, June 06, 2005 2:40 PM
Subject: Re: [OpenMap Users] Questions on how to use OpenMap as an applet
which uses data from server
> Using relative path isn't such a great idea becouse of the size of the
> RPF map (32 MB) would You suggest?? I have a problem putting such data
> into the JAR - i do not know if the JAVA VM will allow to execute such
> application. I am thinking of using Java Web Start but this does not
> solve my problem i do not want to put map data into my jar file of an
> applet is there a chance thath if i point to map in URL openMap layer
> will automaticly download it itself?? is there a chance that i could
> write some code as a servlet that loads a whole CADRG map and sends only
> little piec of it as a new CADRG map. Has anybody tried it?? why the
> engine of open map is so slow while using the CADRG data. When i scroll
> 3 layer on my 2,2 GHz Pentium 4 512 RAM - i am waiting almost 5 seconds
> befor i can see anything.
>
> Thanks for any opinions and hints
>
>
> Don Dietrick napisał(a):
>
> > Hi Mariusz,
> >
> > On May 27, 2005, at 8:50 AM, Mariusz Chmielewski wrote:
> >
> >> Hi I am now experiencing some problems with teh open map as an
> >> applet. I written my own applet so it would be downloaded from the
> >> server and it contains openmap. But i ve got some issues that i
> >> cannot solve:
> >> 1. i am using the CADRG MAPS, those are the spatial data which
> >> requires large amount of memory about 2MB and the question is should
> >> i put the data into the jar file, or should i put the data on the
> >> server and download it or should i simply load the resources on the
> >> client. Ofcourse the 3 option is the worst becouse i do not want the
> >> spatial data to be accessable on the client maschine outside the
> >> applet. (additional info to the first option how to load a map using
> >> properties file from local applet resources??)
> >
> >
> > You can put the data in a jar file.
> >
> >> 2. Concerning properties configuration (same as the map) where it
> >> should be placed inside jar and how to load it??
> >
> >
> > You would configure the RPFLayer to have a relative path to the RPF
> > directory in the jar file, from the root of the jar file.
> >
> >> 3. Is there a chance that i could load only a part of CADRG map and
> >> the load the rest if neccessery?? so that i could minimize the size
> >> of used memory during the execution of the applet??
> >
> >
> > That's the way the layer works now. It only loads what it needs. You
> > can change the cache sizes so it holds onto less memory if you need
that.
> >
> > - Don
> >
> > --
> > [To unsubscribe to this list send an email to "majdart_at_bbn.com"
> > with the following text in the BODY of the message "unsubscribe
> > openmap-users"]
> >
> >
>
> --
> [To unsubscribe to this list send an email to "majdart_at_bbn.com"
> with the following text in the BODY of the message "unsubscribe
openmap-users"]
>
--
[To unsubscribe to this list send an email to "majdart_at_bbn.com"
with the following text in the BODY of the message "unsubscribe openmap-users"]
Received on Mon Jun 06 2005 - 08:46:37 EDT