[postgis-users] How do you use PostGIS Raster?

[Santosh Gaikwad]

HI,

Look at the following application of Ecological Sensitive Area (ESA) of
western ghats (one of the biodiversity hotspot) of India. We have used
PGRaster in this case.

http://www.wetlandsofindia.org/geoserver/www/esa/esa.html (It works well in
Firefox)

Thanks,

Santosh Gaikwad

On Thu, Jun 9, 2011 at 1:12 PM, Javier de la Torre
<jatorre at vizzuality.com>wrote:

> Hi,
>
> We are planning on using it to calculate carbon sequestration on protected
> areas. This is a project by the Convention on Biological Diversity
>
> http://www.cbd.int/lifeweb/carbon/
>
> It basically is an intersection of a raster with bit vectors.
>
> Best,
>
> Javier.
>
>
> On Jun 8, 2011, at 10:09 PM, Mathieu Basille wrote:
>
> Dear Pierre,
>
> Here, we are using PostGIS to analyze large datasets combining rasters and
> vectors. Basically, we are looking at movement and habitat selection in a
> predator-prey system, using GPS-collar data over large areas. The major use
> of PostGIS Raster is for the intersection of prey steps (line segments or
> buffers around these segments) with different raster: Landsat (landcover
> type), slope, road density, relative probability of occurrence of the
> predator, etc. Note that we first tried to use ArcGIS for this step, without
> success, due to many bugs and the need to correct them by hand (which was
> largely too time-consuming). We also used PostGIS Raster to intersect
> predator locations with the Landsat map to estimate Resource Selection
> Functions (RSF) in order to build maps of relative probability of
> occurrence. In the end, information of the intersections were used in R to
> characterize movements of the preys on the landscape.
>
> Best,
> Mathieu Basille.
>
>
> Le 03/06/2011 08:28, Pierre Racine a écrit :
>
> Hi all,
>
>
> I'm preparing a presentation and I need some use cases for PostGIS Raster.
> I would be grateful if people already using the raster side of PostGIS would
> describe what they already do it. Bborie, Jorge, Regina, others? These uses
> cases are vital for the project.
>
>
> On my side we are using PostGIS raster to do raster/vector analysis over
> large datasets. Basically determining mean values for temperature (raster),
> elevation (raster) for fauna observations (point buffers). Converting
> everything to vector and using desktop solutions proved impracticable for
> datasets covering the extent of Canada.
>
>
> For those who did not try the raster extension yet, don't be shy to express
> your planned experiments or your expectations.
>
>
> Thanks all for your contribution to the project,
>
>
> Pierre
>
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>
>
> --
>
> ~$ whoami
> Mathieu Basille, Post-Doc
>
> ~$ locate
> Laboratoire d'Écologie Comportementale et de Conservation de la Faune
> + Centre d'Étude de la Forêt
> Département de Biologie
> Université Laval, Québec
>
> ~$ info
> http://ase-research.org/basille
>
> ~$ fortune
> ``If you can't win by reason, go for volume.''
> Calvin, by Bill Watterson.
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-- 
Santosh S. Gaikwad,

Geo-Informatics Officer,
Salim Ali Centre For Ornithology
& Natural History (SACON),
12-13-588/B, Nagarjunanagar Colony,
Tarnaka,Hyderabad- 500017,
Andhra Pradesh,India.
http://www.wetlandsofindia.org http://sacon.org
Mobile :  91-8106736257
Homepage: http://www.wetlandsofindia.org/santosh/index.html
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