[ka-Map-users] PNG tiles created without transparency

Aaron Koning aaronkoning at gmail.com
Sat Feb 25 21:42:45 EST 2006

Here is a web page that talks about the PNG transparency issue in Internet
Explorer (there are many others). It also includes a PHP script to create
transparent images for IE. There are javascript solutions too.


On 2/25/06, Ehud Shabtai <eshabtai at gmail.com> wrote:
> On 2/22/06, Tyler Mitchell <tjm at timberline.ca> wrote:
> > I'm finally getting back to my 'transparency' problems when using 24bit
> > PNG and multiple group layers.  My cached images do not have any
> > transparency, even though it is specified in my map config - instead the
> > 'background' is black.
> It works fine for me without setting anything special. My IMAGETYPE is
> set to PNG24.
> Setting the imageformat in the METADATA of a layer also works fine -
> make sure you use capital letters: PNG24
> > I also think this is not related at all to the PNGHack issues, is it?  I
> > am currently only testing and checking using Firefox.  Will deal with IE
> > after I get this working FF first.
> Although my PNG shows fine under FireFox, I couldn't get it to work
> under IE. The PNG hack code in ka-map is currently broken and doesn't
> even get called. I tried to enable it but that didn't help much.
> Ehud.
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|  Aaron Koning
|  Information Technologist
|  Prince George, BC, Canada.
|  http://datashare.gis.unbc.ca/fist/
|  http://datashare.gis.unbc.ca/gctp-js/
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