[UNCLASSIFIED]RE: [postgis-users] satellite data (MODIS) into Pos tgreSQL - PostGISdatabase as points or grids?

[Antti.Roppola at brs.gov.au]

Interestingly, most vendors have quietly introduced separate products for
serving up imagery from outside of an RDBMS. This is after a lot of talk
about putting everything into an RDBMS, so I have been wondering if that
is an indication of some low level issue about putting raster into the database.

I recall there was some preliminary discussion about how to best incorporate
imagery and other raster data into PostGIS. This was captured on the Wiki:
http://postgis.refractions.net/support/wiki/index.php?PgRasterDesign

I haven't been keeping up with raster, so I'd be interested to see what sorts
of information you get in repsonse. :)

Cheers,

Antti


-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Jan.Verbesselt at csiro.au
Sent: Wednesday, 21 February 2007 11:32 AM
To: postgis-users at postgis.refractions.net
Cc: Kimberley.Opie at ensisjv.com; Glenn.Newnham at ensisjv.com
Subject: [postgis-users] satellite data (MODIS) into PostgreSQL - PostGISdatabase as points or grids?

Hi all,

After searching the mail archives and postGIS website I didn't find the right answer to my questions.

1/Does anyone have experience on how I could import HDFEOS (MODIS) satellite data in a database system efficiently? Currently, I would transform the hdf files to ascii files via IDL an import these into the database. 

2/Should the data be stored as points (X,Y,value) or can they be imported as a raster in the database such that spatial and temporal analysis is still possible (visualisation via R, openGIS progs etc.). 

Or as I found in the mail archives; Should we online create a path (link to the data) to the hdf files and store this in the database?

All related info, examples, advice is mostly welcome,

Kind regards,
Jan


______________________________________________

Jan Verbesselt
Post-Doctoral Research Fellow
Ensis - the joint forces of CSIRO and Scion Private Bag 10 Clayton South VIC 3169 - Australia
Tel: ++ 61 3 9545 2265
Fax: ++ 61 3 9545 2448
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