KML Overlay Plugin

[phiggins]

I created a placemark and stored as KML and it does work. But the images don't. I'm using Window 7. I'll try it on my XP system.

Don't forget to PM your email address.

[phiggins]

I tried on XP with same results, displays a placemark but not the image.

Here is the KML and JPG, could someone who has the plugin working see if it display the image.

[nohal]

Paul...
The plugin seems not to (yet) implement external image files linked from KML. Try the attached .kmz bundle of your data - works for me.
And welcome back - I've heard you've had a lot of "fun" on the way back north

Pavel

[LeaseOnLife]

Originally Posted by nohal

And welcome back - I've heard you've had a lot of "fun" on the way back north

Pavel, don't get him started..... Don't wanna talk NorthAmerican animosities here...

Paul, what's your current location, I am in Miami? PM sent!

Dirk

[phiggins]

Thanks pavel, you're right the kmz files work. Also even when a KMZ file its doesn't seem to like a BMP image which is what GE2KAP creates.

SethDart, any chance you can add support for the above two things?

LeaseOnLife, I'm back in Toronto. Not sure they will let me across the border anymore. Anyone want to buy a sailboat in Florida?

Yeah lets not mention that C word country again.

[SethDart]

Hi,

I'll implement external image for KML files ASAP. I choose KMZ because I thought it'd be better as it's self contained. I don't know if image path can be relative (to the path of the KML file) or absolute. If the latter, it'd be hard to share such KML+images because it'd require to have the same path to work.

A KMZ file is just a zip with one KML and one or more images. The transparency is defined in the KML file (in the color section) Nothing special with the image, the whole transparency is handled by the plugin as defined in the KML file.
You can open the Herm KMZ file from #55 the transparency is set in:
<color>b8ffffff</color>
It's coded as Alpha+RGB, RGB not being used for image overlay. So alpha is the first two chars in hex, 0-255

If you can create a KML file plus the appropriate image, it's very easy to create the same as KMZ. You can contact me privately if needed, my mail address is in the autors section of OpenCPN about dialog.

Regards,
Jean-Eudes

[nohal]

Jean-Eudes...
https://developers.google.com/kml/do...#groundoverlay says "Any URI" when describing the href parameter, so pretty much anything can be there.

Pavel

[phiggins]

Jean-Eudes,

I have been trying to change GE2KAP to create a JPG output and a KMZ. The JPG I can do but I am having difficulty creating a KMZ. If you or anyone else has some C++ code to do this, I'd appreciate a copy of it.

[nohal]

Paul,
haven't tried it myself, but have a look at Zip Utils - clean, elegant, simple, C++/Win32 - CodeProject®
The contents of the zip aka .kmz are:
doc.kml and a folder called files with the jpg file/s

Pavel

[phiggins]

SethDart,

I have modified GE2KAP so that it creates a KMZ file but the plugin won't load it. The KMZ file can be opened OK on Google earth. I have attached the KMZ file and the JPEG file that GE2KAP produces. Why can't the plugin load it?

[cagney]

Originally Posted by phiggins

SethDart,

I have modified GE2KAP so that it creates a KMZ file but the plugin won't load it. The KMZ file can be opened OK on Google earth. I have attached the KMZ file and the JPEG file that GE2KAP produces. Why can't the plugin load it?

Paul

The picture was not included in the kmz file I downloaded the picture from your post and added it to the kmz archive, and then it showed up OK.

Thomas

[phiggins]

Thanks, Cagney,

But GE is able to display it when they are seperate files. Could you post the KMZ file with the .JPG as part of it.

[cagney]

Originally Posted by phiggins

Thanks, Cagney,

But GE is able to display it when they are seperate files. Could you post the KMZ file with the .JPG as part of it.

test14.kmz.doc

[phiggins]

OK thanks,

I modified GE2KAP to create a KMZ with the JPG imbedded in it and now it works with the plugin. See attached KMZ.

If anyone would like to test the new version of GE2KAP, send me an email:

phiggins()gmn-usa.com change the () to you know what.

[sinbad7]

Paul..

Hello again.. I knew you were up to more trouble.. he he
Just found this thread and have skimmed through it.
I tried displaying your test22.kmz but it just displays a transparent overlay with no features. Presume there is also the need of a .jpg file? Where can I download it?

Can I download this new GE2KAP from your site?

What exactly does the opencpn plugin do?

Regds

Tore