Re: [GRASS-user] Export Raster to Google Earth Files

2009-10-17 Thread Roger André
lol  Awesome!  Can you imagine ESRI creating a utility this way?

Thanks for doing this.

Roger
--

On Fri, Oct 16, 2009 at 8:36 PM, Hamish hamis...@yahoo.com wrote:
 Andrew wrote:
  I would like to export raster files to a Google Earth
  image (kmz or kml).
   Does anyone know how this is done?  I found a way
  to export a vector to a kmz file, but not a raster.

 Roger André wrote:
 The easiest way to do this for 1 or 2 reasonably sized rasters
 is to simply write a very short KML file that points to the
 image name and defines its geographic extents.  If you have to
 do it for hundreds of files, then scripting it is much
 faster.
 ...
 Here is what the KML should look like:

 GroundOverlay
 descriptionSomething pithy/description
 nameSomething else pithy/name
 visibility1/visibility
 open1/open
 Icon
 hrefname_of_image_file/href
 /Icon
 drawOrder0/drawOrder
 LatLonBox
 north  DD./north
 south  DD./south
 west DD./west
 east DD./east
 /LatLonBox
 /GroundOverlay

 based on this template I've added a r.out.kml script in addons
 SVN to do that.

 https://trac.osgeo.org/grass/browser/grass-addons/raster/r.out.kml


 TODO:
  - completely untested
  - g.region -n is broken in at least devbr6 (trac #791) so
   export only works from LL/WGS84 right now
  - pythonization
  - add a -k flag to d.out.file to write a KML file (test true north angle(s)!)

 comments/testing/suggestions welcome.


 Hamish





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Re: [GRASS-user] Export Raster to Google Earth Files

2009-10-16 Thread Roger André
The easiest way to do this for 1 or 2 reasonably sized rasters is to
simply write a very short KML file that points to the image name and
defines its geographic extents.  If you have to do it for hundreds of
files, then scripting it is much faster.  I can send you a short Perl
script that uses gdalinfo to determine the extents.  Here is what the
KML should look like:

GroundOverlay
descriptionSomething pithy/description
nameSomething else pithy/name
visibility1/visibility
open1/open
Icon
hrefname_of_image_file/href
/Icon
drawOrder0/drawOrder
LatLonBox
north  DD./north
south  DD./south
west DD./west
east DD./east
/LatLonBox
/GroundOverlay

Roger
--

On Tue, Oct 13, 2009 at 11:14 AM, Andrew Lewin
andrew.le...@sympatico.ca wrote:
 Hi Everyone,

 I would like to export raster files to a Google Earth image (kmz or kml).
  Does anyone know how this is done?  I found a way to export a vector to a
 kmz file, but not a raster.

 Your help is very much appreciated.

 Best,

 Andrew

 Andrew Lewin, M.Sc., Adv. Dipl. GIS
 Email: andrew.le...@sympatico.ca
 Tel: (905) 639-4646
 Mobile: (905) 630-8441
 Skype: andrew.lewin99

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Re: [GRASS-user] Export Raster to Google Earth Files

2009-10-16 Thread Hamish
Andrew wrote:
  I would like to export raster files to a Google Earth
  image (kmz or kml).
   Does anyone know how this is done?  I found a way
  to export a vector to a kmz file, but not a raster.

Roger André wrote:
 The easiest way to do this for 1 or 2 reasonably sized rasters
 is to simply write a very short KML file that points to the
 image name and defines its geographic extents.  If you have to
 do it for hundreds of files, then scripting it is much
 faster.
...
 Here is what the KML should look like:
 
 GroundOverlay
 descriptionSomething pithy/description
 nameSomething else pithy/name
 visibility1/visibility
 open1/open
 Icon
 hrefname_of_image_file/href
 /Icon
 drawOrder0/drawOrder
 LatLonBox
 north  DD./north
 south  DD./south
 west DD./west
 east DD./east
 /LatLonBox
 /GroundOverlay

based on this template I've added a r.out.kml script in addons
SVN to do that.

https://trac.osgeo.org/grass/browser/grass-addons/raster/r.out.kml


TODO:
 - completely untested
 - g.region -n is broken in at least devbr6 (trac #791) so
   export only works from LL/WGS84 right now
 - pythonization
 - add a -k flag to d.out.file to write a KML file (test true north angle(s)!)

comments/testing/suggestions welcome.


Hamish




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Re: [GRASS-user] Export Raster to Google Earth Files

2009-10-14 Thread John A Stevenson

Hamish wrote:

easier:
I think you just have to export a geotiff then compose the KM? file
manually with the bounds.
  
Or you can use gdal2tiles.py to do this bit.  It will also create 
different zoom levels for you.


More information on a previous posting:

http://lists.osgeo.org/pipermail/grass-user/2009-May/050361.html

John

--


Dr John Stevenson
Postdoctoral Research Associate
School of Earth, Atmospheric and Environmental Sciences
Williamson Building (Room 2.42)
University of Manchester
Manchester M13 9PL, UK
tel. +44(0)161 306 6585; fax. +44(0)161 306 9361;
john.steven...@manchester.ac.uk 


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[GRASS-user] Export Raster to Google Earth Files

2009-10-13 Thread Andrew Lewin

Hi Everyone,

I would like to export raster files to a Google Earth image (kmz or  
kml).  Does anyone know how this is done?  I found a way to export a  
vector to a kmz file, but not a raster.


Your help is very much appreciated.

Best,

Andrew

Andrew Lewin, M.Sc., Adv. Dipl. GIS
Email: andrew.le...@sympatico.ca
Tel: (905) 639-4646
Mobile: (905) 630-8441
Skype: andrew.lewin99

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Re: [GRASS-user] Export Raster to Google Earth Files

2009-10-13 Thread Hamish
Andrew wrote:
 I would like to export raster files to a Google Earth image
 (kmz or kml).  Does anyone know how this is done? 
 I found a way to export a vector to a kmz file, but not a
 raster.

try  http://grass.osgeo.org/wiki/GRASS_AddOns#r.out.gmap


easier:
I think you just have to export a geotiff then compose the KM? file
manually with the bounds.


Hamish




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