[Geoserver-users] How to show sparkling points in my map?

GeoServer GeoServer User
1

Hi,

I Would like to show some sparkling points in my map, because I want to stand out these points. But the map got by GetMap request with GIF format couldn't sparkle, though I used a Gif picture in my PointSymbolizer.

Could anyone help me?

Thanks in advance!

Youni.

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2

悠 妮 ha scritto:

Hi,

I Would like to show some sparkling points in my map, because I want to
stand out these points. But the map got by GetMap request with GIF
format couldn't sparkle, though I used a Gif picture in my PointSymbolizer.

Could anyone help me?

Sparkle -> blink, move?
Then you're out of luck, the geotools renderer does not support animated
gifs, and it's hard to modify to support those too...
The rendering process is performed as follows:
* setup a BufferedImage
* render on it
* encoded in whatever format the user requested
Since BufferedImage does not support animation, it's not possible to
have it encoded in the resulting GIF.

You would hve to write your own renderer in order to build the
multiple images necessary to animate a GIF, and your own map encoder,
to merge those "layers" to make the animated map.

Oh, btw, do you know blinks can trigger epilepsy attacks in predisposed
people? http://www.epilepsy.org.uk/info/photo.html

Cheers
Andrea

3

One thing you could do, is if you are making a web application (in
javascript for example), you could perform a WFS request for those
specific points that you want to sparkle, then you just get the
coordinates of them and convert the coordinates to screen coordinates
and render the GIF image over those points.
Not an easy task, but probably easier than changing the renderer.

Brent Owens
(The Open Planning Project)

ÓÆ ÄÝ wrote:

Hi,

I Would like to show some sparkling points in my map, because I want
to stand out these points. But the map got by GetMap request with GIF
format couldn't sparkle, though I used a Gif picture in my
PointSymbolizer.

Could anyone help me?

Thanks in advance!

Youni.

_________________________________________________________________
ÏíÓÃÊÀ½çÉÏ×î´óµÄµç×ÓÓʼþϵͳ¡ª MSN Hotmail¡£ http://www.hotmail.com

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4

Thank you very much! I will try the method.

Otherwise, I think there is another solution can be expected, that is get another picture by WMS request, and have only those specific points on it with another style, then show it in an <img>, and put the <img> into a <div> with the biggest z-index value, and control the layer's visibility between visible and hidden again and again.

But I don't know how about the efficiency. I will have a try too, and compare with the first sulution.

From: Brent Owens <brentowens@anonymised.com>
To: ÓÆ ÄÝ <youni_9@anonymised.com>
CC: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] How to show sparkling points in my map?
Date: Mon, 06 Nov 2006 07:58:10 -0800

One thing you could do, is if you are making a web application (in
javascript for example), you could perform a WFS request for those
specific points that you want to sparkle, then you just get the
coordinates of them and convert the coordinates to screen coordinates
and render the GIF image over those points.
Not an easy task, but probably easier than changing the renderer.

Brent Owens
(The Open Planning Project)

ÓÆ ÄÝ wrote:
> Hi,
>
> I Would like to show some sparkling points in my map, because I want
> to stand out these points. But the map got by GetMap request with GIF
> format couldn't sparkle, though I used a Gif picture in my
> PointSymbolizer.
>
> Could anyone help me?
>
> Thanks in advance!
>
> Youni.
>
> _________________________________________________________________
> ÏíÓÃÊÀ½çÉÏ×î´óµÄµç×ÓÓʼþϵͳ¡ª MSN Hotmail¡£ http://www.hotmail.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

>

------------------------------------------------------------------------

>
> _______________________________________________
> Geoserver-users mailing list
> Geoserver-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>

_________________________________________________________________
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5

Actually that sounds like a reasonable way to do it, and it should run
fairly smooth.
If you get it working, we would love to see it and maybe document your
experience.

cheers,

Brent Owens
(The Open Planning Project)

ÓÆ ÄÝ wrote:

Thank you very much! I will try the method.

Otherwise, I think there is another solution can be expected, that is
get another picture by WMS request, and have only those specific
points on it with another style, then show it in an <img>, and put the
<img> into a <div> with the biggest z-index value, and control the
layer's visibility between visible and hidden again and again.

But I don't know how about the efficiency. I will have a try too, and
compare with the first sulution.

From: Brent Owens <brentowens@anonymised.com>
To: ÓÆ ÄÝ <youni_9@anonymised.com>
CC: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] How to show sparkling points in my map?
Date: Mon, 06 Nov 2006 07:58:10 -0800

One thing you could do, is if you are making a web application (in
javascript for example), you could perform a WFS request for those
specific points that you want to sparkle, then you just get the
coordinates of them and convert the coordinates to screen coordinates
and render the GIF image over those points.
Not an easy task, but probably easier than changing the renderer.

Brent Owens
(The Open Planning Project)

ÓÆ ÄÝ wrote:
> Hi,
>
> I Would like to show some sparkling points in my map, because I want
> to stand out these points. But the map got by GetMap request with GIF
> format couldn't sparkle, though I used a Gif picture in my
> PointSymbolizer.
>
> Could anyone help me?
>
> Thanks in advance!
>
> Youni.
>
> _________________________________________________________________
> ÏíÓÃÊÀ½çÉÏ×î´óµÄµç×ÓÓʼþϵͳ¡ª MSN Hotmail¡£ http://www.hotmail.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

>

------------------------------------------------------------------------

>
> _______________________________________________
> Geoserver-users mailing list
> Geoserver-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>

_________________________________________________________________
Ãâ·ÑÏÂÔØ MSN Explorer: http://explorer.msn.com/lccn