[Geoserver-users] PNG Transparency

Eduin_Carrillo · July 10, 2006, 9:24pm

Hello list.

When I overlay my WMS layers with png format, it looks fine in firefox with
transparencies, but IE shows a white background image.

This is related to geoserver?

Looking at maps.google.com I can see that Hybrid map ovarlay pngs in both IE
and Firefox

Eduin

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Brent_Owens1 · July 10, 2006, 9:36pm

Are you using a specific client such as MapBuilder or Open Layers? Or just rendering the images yourself?

Brent Owens
(The Open Planning Project)

Eduin Carrillo wrote:

Hello list.

When I overlay my WMS layers with png format, it looks fine in firefox with
transparencies, but IE shows a white background image.

This is related to geoserver?

Looking at maps.google.com I can see that Hybrid map ovarlay pngs in both IE
and Firefox

Eduin

__________________________________________________
Correo Yahoo!
Espacio para todos tus mensajes, antivirus y antispam ¡gratis! Regístrate ya - http://correo.espanol.yahoo.com/

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Eduin_Carrillo · July 10, 2006, 9:45pm

Using wms-js script with Google maps:

http://sig.cas.gov.co/reforestaciones

Eduin

--- Brent Owens <brentowens@anonymised.com> escribió:

Are you using a specific client such as MapBuilder or Open Layers? Or
just rendering the images yourself?

Brent Owens
(The Open Planning Project)

Eduin Yezid Carrillo Vega
GIS Specialist
http://eduinyezid.carrillovega.com
http://sig.cas.gov.co/~yecarrillo

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Simone3 · July 10, 2006, 9:59pm

might be this…
http://homepage.ntlworld.com/bobosola/

On 7/10/06, Eduin Carrillo <yecarrillo@anonymised.com.54…> wrote:

Using wms-js script with Google maps:

http://sig.cas.gov.co/reforestaciones

Eduin

— Brent Owens <brentowens@anonymised.com> escribió:

Are you using a specific client such as MapBuilder or Open Layers? Or
just rendering the images yourself?

Brent Owens
(The Open Planning Project)

Eduin Yezid Carrillo Vega
GIS Specialist
http://eduinyezid.carrillovega.com
http://sig.cas.gov.co/~yecarrillo

Correo Yahoo!
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Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

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Javier_de_la_Torre · July 10, 2006, 11:09pm

As already mentioned IE does not support transparency in PNGs... there is some hacks to do that but in a web gus can be tricky.

What Google does in the Hybrid mode is pretty smart. If it detects Firefox it uses PNGs to overlay de roads on the imagery. In Internet Explorer, Google Maps uses VML to draw polylines.

In IE 7 this will be solved (if it is ever released).

So it is not a problem of Geoserver but Internet Explorer.

Javier.

On 10/07/2006, at 23:24, Eduin Carrillo wrote:

Hello list.

When I overlay my WMS layers with png format, it looks fine in firefox with
transparencies, but IE shows a white background image.

This is related to geoserver?

Looking at maps.google.com I can see that Hybrid map ovarlay pngs in both IE
and Firefox

Eduin

__________________________________________________
Correo Yahoo!
Espacio para todos tus mensajes, antivirus y antispam ¡gratis!
Regístrate ya - http://correo.espanol.yahoo.com/

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
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Eduin_Carrillo · July 11, 2006, 10:25pm

Thank you. I will try to test your suggestions with Google Maps and put some
notes at the docs.

Eduin

--- Javier de la Torre <jatorre@anonymised.com> escribió:

As already mentioned IE does not support transparency in PNGs...
there is some hacks to do that but in a web gus can be tricky.

What Google does in the Hybrid mode is pretty smart. If it detects
Firefox it uses PNGs to overlay de roads on the imagery. In Internet
Explorer, Google Maps uses VML to draw polylines.

In IE 7 this will be solved (if it is ever released).

So it is not a problem of Geoserver but Internet Explorer.

Javier.

Eduin Yezid Carrillo Vega
GIS Specialist
http://eduinyezid.carrillovega.com
http://sig.cas.gov.co/~yecarrillo

__________________________________________________
Correo Yahoo!
Espacio para todos tus mensajes, antivirus y antispam ¡gratis!
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