[gdal-dev] KMZ Support in OGR?

[Christopher Condit]

Here's the other problem I have with making KMZ's directly from OGR.
Often, users will want to include auxiliary files for icons, etc in the
kmz archive. As soon as we start zipping KML output I'm worried we'll
have to introduce some provision to include these files in the final
output....

 

-Chris

 

From: Simon Perkins [mailto:sy at perkins.net] 
Sent: Saturday, March 29, 2008 13:48
To: Christopher Condit
Cc: Brian Hamlin; gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] KMZ Support in OGR?

 

Well, all very salient points. I particularly liked the link to Joel
Spolsky's article. Should be required reading for all programmers!

But a couple of comments anyway...




*) Google's libkml is not yet production ready
  

Fair enough - I haven't used it. But my hope would be that if Google is
going to be using this in Google Earth then it should get up to speed
pretty darn quickly. Of course, I'm not sure they've said that...




*) Once the KML 2.2 spec is approved by OGC I expect it to be rather
stable, so I'm not sure that switching to libkml for an evolving
standard is really going to buy OGR much.
  


Another good point. To be honest my interest is more in seeing the few
flaws I've discovered fixed than anything else. If it's easier to fix
the current driver then that's probably the way to go.




*) It would probablybe trivial to add kmz support, but as Brian
suggested why not just pipe the file to a zip command?
  


Well, that's fine if you're just trying to lash something together
specifically for KML files on a linux system, but not so great if you're
developing, say, commercial windows software that has to deal with lots
of different formats. As I see it the whole point of an abstraction
layer like GDAL/OGR is that you shouldn't have to care about the
intricacies of particular data formats. So if your users are going to be
trying to load KMZ files (the Google Earth default format) into your
application, it would be much nicer if OGR could just do its job and
read those files without you having to special case things. No?


Sy





-----Original Message-----
From: gdal-dev-bounces at lists.osgeo.org
[mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of Simon Perkins
Sent: Saturday, March 29, 2008 12:16
To: Brian Hamlin
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] KMZ Support in OGR?
 
Brian Hamlin wrote:
  

	<flame>You say you think it would be a great idea to add a new
library
	    

 
  

	in place of most of the driver that is there, but dont have time

	and/or ability to make a wiki page about that as a proposed 
	project?</flame>
	    

 
Well, that at least is one thing I have the time to fix... I've added an
 
enhanced KML driver using the Google library to the GDAL SoC ideas page.
 
Feel free to edit!
 
http://trac.osgeo.org/gdal/wiki/SummerOfCode
 
Cheers,
 
Simon
 
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