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<DIV><FONT face=Arial size=2>Hi Paul,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Well, sort off..... with sideeffects. I think I
mentioned them to you a while ago; In IE, PNG24 now comes out transparent (so
that works), but at the moment in Firefox the transparent colour becomes black.
Could be my setup. Maybe someone else can try.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>regards,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Jacob</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>» -----Original Message-----<BR>» From: Paul
Spencer [mailto:pspencer@dmsolutions.ca] <BR>» Sent: 14 September 2005
20:00<BR>» To: Jacob Delfos<BR>» Cc: <A
href="mailto:ka-map-users@lists.maptools.org">ka-map-users@lists.maptools.org</A><BR>»
Subject: Re: [ka-Map-users] Highly Interested Developer with <BR>» some
questions<BR>» <BR>» Jacob,<BR>» <BR>» is the png hack working for you? I
had some problems with a <BR>» png24 layer <BR>» not being transparent in ie6
... and it was apparently using <BR>» the hack so <BR>» I'm not sure what is
going on<BR>» <BR>» Cheers<BR>» <BR>» Paul<BR>» <BR>» Jacob Delfos wrote:<BR>»
> Clark / Pete,<BR>» > <BR>» > Regarding the use of aerial
photography and PNG24: I <BR>» noticed that Paul <BR>» > has integrated the
changes (png transparency hack) into Ka-Map that <BR>» > allows PNG24 to be
transparent in IE, along with changes allowing <BR>» > different image
formats for different groups (by specifying an <BR>» > "imageformat"
parameter in the metadata). So that is not a <BR>» limitation <BR>» > anymore
to the use of aerial photography. I successfully <BR>» use jpeg format <BR>»
> for full-colour imagery, and gif for our transparent vector layers.<BR>»
> <BR>» > Paul did mention about having issues with the png <BR>»
transparency hack for <BR>» > 8 bit PNG images (which Mapserver appears to
revert to for <BR>» vector data, <BR>» > even if PNG24 is the specified image
format). But you could <BR>» now instead <BR>» > use gif for transparent
layers, while using jpeg for <BR>» non-transparent <BR>» > layers, retaining
the ability for full-colour images. Gif <BR>» transparency <BR>» > works in
all browsers without problems, providing GIF is <BR>» specified as <BR>» >
default outputformat in the mapfile (otherwise <BR>» php_mapscript appears to
<BR>» > produce non-transparent gif images). I did some testing, <BR>» which
showed <BR>» > GIF appears to compress indexed-colour images a fair bit <BR>»
better than <BR>» > PNG8 too (lossless). For the JPEG layers, you can pick
the desired <BR>» > compression, and significantly reduce image sizes that
way, <BR>» somewhat <BR>» > reducing the speed problems that Pete
mentioned.<BR>» > <BR>» > regards,<BR>» > <BR>» >
Jacob<BR>» > <BR>» > <BR>» > <BR>» > <BR>»
> <BR>» > <BR>»
--------------------------------------------------------------<BR>»
------------------<BR>» > From: <A
href="mailto:ka-map-users-bounces@lists.maptools.org">ka-map-users-bounces@lists.maptools.org</A>
<BR>» > <<A
href="mailto:ka-map-users-bounces@lists.maptools.org">mailto:ka-map-users-bounces@lists.maptools.org</A>>
<BR>» > [mailto:ka-map-users-bounces@lists.maptools.org] On Behalf <BR>» Of
Peter Giencke<BR>» > Sent: 14 September 2005 03:54<BR>» > To: <A
href="mailto:cendrizzi@gmail.com">cendrizzi@gmail.com</A> <<A
href="mailto:cendrizzi@gmail.com">mailto:cendrizzi@gmail.com</A>>; <BR>» >
<A
href="mailto:ka-map-users@lists.maptools.org">ka-map-users@lists.maptools.org</A>
<BR>» <<A
href="mailto:ka-map-users@lists.maptools.org">mailto:ka-map-users@lists.maptools.org</A>><BR>»
> Subject: RE: [ka-Map-users] Highly Interested Developer <BR>» with some
questions<BR>» > <BR>» > <BR>» > Clark,<BR>» > <BR>»
> 1) Yes you can; we've been using raster [wms] backdrops <BR>» extensively
in <BR>» > many of our ka-map implementations. I've found however, <BR>» that
speed can <BR>» > suffer (from mildly to greatly) depending on the number and
<BR>» complexity <BR>» > of rasters used (duh). Also, best results are
obtained when <BR>» using PNG24 <BR>» > for this, but you'll have to 'hack'
ka-map to enable PNG <BR>» transparency, <BR>» > so that 'layering' works in
IE. (There's a thread for that here: <BR>» > <BR>» <A
href="http://lists.maptools.org/pipermail/ka-map-users/2005-August/0">http://lists.maptools.org/pipermail/ka-map-users/2005-August/0</A><BR>00235.html).
<BR>» > If these two concerns can be leveraged, the results are <BR>» very
nice (I <BR>» > have an example of this here: <A
href="http://mds.glc.org/kamap_cvs3/">http://mds.glc.org/kamap_cvs3/</A>).<BR>»
> <BR>» > 2. Assuming you take the time to peruse the api's source
code and <BR>» > consult the mailing-list archives, you should be able to get
up and <BR>» > running within a weekend, or week, depending... Although <BR>»
ka-map is a <BR>» > relatively new creation, it's still very functional at
this <BR>» early stage.<BR>» > <BR>» > -pete<BR>» > <BR>»
> <BR>» > <BR>»
--------------------------------------------------------------<BR>»
------------------<BR>» > From: <A
href="mailto:ka-map-users-bounces@lists.maptools.org">ka-map-users-bounces@lists.maptools.org</A>
<BR>» > <<A
href="mailto:ka-map-users-bounces@lists.maptools.org">mailto:ka-map-users-bounces@lists.maptools.org</A>>
<BR>» > [mailto:ka-map-users-bounces@lists.maptools.org] On Behalf <BR>» Of
Clark Endrizzi<BR>» > Sent: Tuesday, September 13, 2005 2:17 PM<BR>» > To:
<A
href="mailto:ka-map-users@lists.maptools.org">ka-map-users@lists.maptools.org</A>
<BR>» <<A
href="mailto:ka-map-users@lists.maptools.org">mailto:ka-map-users@lists.maptools.org</A>><BR>»
> Subject: [ka-Map-users] Highly Interested Developer with <BR>» some
questions<BR>» > <BR>» > <BR>» > I run a development group that
is developing a real estate <BR>» > application.(web based). It's PHP
and from the start we <BR>» have had the <BR>» > idea of including mapping
software to integrate with <BR>» mapping stuff. <BR>» > We've looked at
multiple web based mapping vendors, <BR>» including Arc IMS, <BR>» > but
haven't found something that we consider a good <BR>» solution. We want
<BR>» > something that is easy to use like Google maps but also <BR>» very
flexible. <BR>» > Furthermore it's important that we have the ability
to <BR>» include it in our <BR>» > mostly closed source applicaton. <BR>»
> <BR>» > I'm not really a mapping guru as most of my incomplete
<BR>» knowledge comes <BR>» > from a mapping group in the same building so I
have some <BR>» basic questions <BR>» > about whether we can use ka-map and
contribute to it as well. <BR>» > 1. Can you use aerial photography
with ka-map? We use <BR>» aerials provided <BR>» > by air photo USA and
want to use that on our web based stuff. I'm <BR>» > guessing right now
only street maps are supported. With <BR>» aerials, we <BR>» > need to
use these images (they come in jpeg) and associate <BR>» their world <BR>» >
files (which have the projection ifnormation in them). Is this <BR>» >
something that could be done with this software (if it <BR>» doesn't exist now
<BR>» > could it be realistically added?).<BR>» > <BR>» >
2. Could we expect to use this stuff by the end of the <BR>» year?
Based off <BR>» > the examples it looks like ka-map is pretty far
along...<BR>» > <BR>» > Actually that's probably all the questions
for now since our use of <BR>» > ka-maps is contigent on them.
Currently we have four developers <BR>» > including myself with pretty
extensive experience in web <BR>» development, <BR>» > javascript (including
just starting to get into "ajax" <BR>» stuff). I hope <BR>» > it's
clear that we're not trying to selfishly use and <BR>» expect ka-maps to <BR>»
> work for us as we're willing to improve it to meet our needs if it <BR>»
> doesn't have the functionality. <BR>» > <BR>» > I hope this can
work out since you have done excellent work! <BR>» > <BR>» >
Thanks,<BR>» > -- <BR>» > -Clark Endrizzi<BR>» > <<A
href="mailto:jacob.delfos@maunsell.com">mailto:jacob.delfos@maunsell.com</A>>
<BR>» > <BR>» > <BR>» > <BR>»
--------------------------------------------------------------<BR>»
----------<BR>» > <BR>» >
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list<BR>» > <A
href="mailto:ka-Map-users@lists.maptools.org">ka-Map-users@lists.maptools.org</A><BR>»
> <A
href="http://lists.maptools.org/mailman/listinfo/ka-map-users">http://lists.maptools.org/mailman/listinfo/ka-map-users</A><BR>»
<BR>» -- <BR>»
+-----------------------------------------------------------------+<BR>» |Paul
Spencer
<A href="mailto:pspencer@dmsolutions.ca">pspencer@dmsolutions.ca</A>
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