[gdal-dev] kml superoverlay help request

[Harsh Govind]

Brian,
I had responded earlier but for some reason my email was rejected by list maybe because my official ID changed. In any case below is my response.

What version of gdal is this? KMLSUPEROVERLAY driver creates a hierarchy of regions that can be used to efficiently serve large set of imagery. As few points near higher resolution tiles are loaded. KMLSUPEROVERLAY driver generates kmz with this command:

Gdal_translate.exe -of KMLSUPEROVERLAY c:\my.tif c:\myResult.kmz -co FORMAT=PNG

I have not implemented read for KMLSUPEROVERLAY. Ogrinfo should be able to read kml but not gdal. Let me know if you have more questions.

"v" gets appended for formats supporting virtual IO.

Harsh Govind


-----Original Message-----
From: gdal-dev-bounces at lists.osgeo.org [mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of brian
Sent: Monday, April 04, 2011 12:23 PM
To: Brian Wilson
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] kml superoverlay help request

Brian

IIRC the superoverlay driver is read only.

Reading images from knls are problematic at best.

Can you give me some info on the stucture of the kmz's?

Brian



On Sun, 2011-04-03 at 22:43 -0700, Brian Wilson wrote:
> I received a batch of files that are in a kml format that looks like
> the "KML SUPEROVERLAY" that gdal supports.
> There is a kmz flle which when unzipped contains a batch of JPEGs and
> a file called doc.kml that describes them.
> 
> My "gdalinfo --formats" command says "KMLSUPEROVERLAY (rwv): Kml Super
> Overlay" but I don't know how to feed it the files.
> I tried the KMZ, the unpacked directory, and the doc file
> 
> ERROR 4: `nc4806-50.kmz' not recognised as a supported file format.
> ERROR 4: `nc4806-50' not recognised as a supported file format.
> ERROR 4: `nc4806-50/doc.kml' not recognised as a supported file
> format.
> 
> Or maybe I am wrong about what a kml super overlay is?
> My google searches only turned up help with writing the kml files, but
> I am assuming the formats "rwv" means it can read, write, and also do
> something else starting with the letter 'v' -- always wondered about
> those codes like rw+ maybe the + means update or append?? (And "rov"
> means remotely operated vehicle? oops context shift sorry)
> 
> Thanks in advance
> 
> Brian Wilson
> Corvallis OR
> 
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> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
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