[OSGeo-Discuss] Event: III Jornadas de SIG Libre en Girona, Marzo de 2009

2008-10-30 Thread Lluís Vicens

Dear colleagues, SORRY for the cross-postings:

Maybe you or someone in your team can be interested in the III FOSS for 
GIS Spanish meeting that will be held on Girona (Spain) from 11th to 
13th of March 2009. All available information concerning to the planned 
plenary sessions [1] and workshops [2], can be accessed in the website. 
Note that Spanish is the official language of the meeting but English 
papers and presentations will also be accepted.


The registration process is open now [3]

We encourage you to send your abstracts (300 words max.) to 
[EMAIL PROTECTED] if you are interested to participate in the 
event with a presentation


Important deadlines to remember:

For Papers
   Abstract reception deadlines: 10th November 2008
   Full paper reception deadline: 6th February 2009

For Registration
   Early registration: until 15th December 2008
   Late registration: from 16th December 2008 to 17th February 2009

For any doubt or comment, please don't hesitate to contact us on 
[EMAIL PROTECTED]


Best regards,
Lluís

[1] http://www.sigte.udg.es/jornadassiglibre/index.php?page=jornadas
[2] http://www.sigte.udg.es/jornadassiglibre/index.php?page=talleres
[3] http://www.sigte.udg.es/jornadassiglibre/index.php?page=inscripcion

=
Lluís Vicens 

SIGTE - Universitat de Girona
Pl. Ferrater Mora, 1 
17071   Girona   
  
email: [EMAIL PROTECTED]
T:(34) 972 418 039   
=


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RE: [OSGeo-Discuss] methods for programatically adding fields toshapefiles

2008-10-30 Thread Fawcett, David
Tyler, 

Here is a link to some python code that I wrote to read a delimited text
file and write out a shapefile.  It uses the ogr and osr python modules.
The code is not particularly clean or efficient, but it does include the
case of creating a shapefile, creating columns, and populating the
columns.  

http://code.google.com/p/flatlandmaps/source/browse/trunk/csv2shp.py

You can email me directly if you have any questions about how it works.

David.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tyler Erickson
Sent: Wednesday, October 29, 2008 4:49 PM
To: discuss@lists.osgeo.org
Subject: [OSGeo-Discuss] methods for programatically adding fields
toshapefiles



I am interested in approaches for adding a populated field to a
shapefile (for example, adding a new field named 'source_url' with the
value 'http://somewebsite.com').  I would like to do this for several
thousand files.

At first I thought that I might be able to accomplish it using ogr2org
with a sql clause, such as:

ogr2ogr -sql select *, 'http://somewebsite.com' as source_url from
infile outfile.shp infile.shp

but that didn't work since ogr2ogr supports a limited set of SQL,
described
at:
http://www.gdal.org/ogr/ogr_sql.html

Any ideas on how to accomplish this? (I would prefer suggestions that
can be scripted with python.)

- Tyler
-- 
View this message in context:
http://n2.nabble.com/methods-for-programatically-adding-fields-to-shapef
iles-tp1395535p1395535.html
Sent from the OSGeo Discuss mailing list archive at Nabble.com.

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[OSGeo-Discuss] Re: Raster data on RDBMS

2008-10-30 Thread Gilberto Camara

Dear all

I would like to take a broader view of the issue of raster data in a
DBMS. Issues of performance are relevant, but the benefits of having
raster data on a DBMS are much more important.

Consider that raster sensors and grid models are by far the dominant
source of new geospatial data. If FOOS4G solutions do not include the
capability of handling raster data in a DBMS, they would be lacking in
functionality compared to commercial solutions from Oracle and ESRI.

INPE´s FOSS4G developement of raster data on RDBMS using the
TerraLib library is a tangible proof of concept. TerraAmazon
(built using TerraLib) is INPE's OS solution for monitoring
tropical forests operationally.

The application was described in a recent article on the OSGEO
journal, and it is arguably one of the biggest geospatial databases
built using FOSS4G. Hundreds of images and hundreds of thousands
of polygons are used operationally in Brazil´s real-time monitoring
of deforestation.

We hope our example helps to convince the community
that we should not waste time arguing that we shouldn't
store raster data in DBMS. FOOS4G needs this capability.
Better yet, we already HAVE this capability on a production level.

Best Regards
Gilberto


--
===
Dr.Gilberto Camara
Director General
National Institute for Space Research (INPE)
Sao Jose dos Campos, Brazil

voice: +55-12-3945-6035
fax:   +55-12-3921-6455
web:   http://www.dpi.inpe.br/gilberto
blog:  http://techne-episteme.blogspot.com/

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Re: [OSGeo-Discuss] Re: Raster data on RDBMS

2008-10-30 Thread Paul Ramsey
On Thu, Oct 30, 2008 at 5:25 PM, Gilberto Camara
[EMAIL PROTECTED] wrote:
 but the benefits of having
 raster data on a DBMS are much more important.

And those benefits are?
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Re: [OSGeo-Discuss] Re: Raster data on RDBMS

2008-10-30 Thread Lucena, Ivan
Paul,

That is not the answer your are waiting for but...

IMHO, once you overcome the mythical concept that a database server will always 
perform slower than a direct file access then Spatial is not special anymore! 
[who said that?] and you can think on the benefits just like a banker or an 
accounting bureau. Database servers in general are capable of making a good use 
of the available resources. For raster what is needed is a good BLOB support 
with cursor preferably. Spatial extension and schemas are indispensable 
accessories, they should provide metadata, georeferences definition, spatial 
indexation, etc. but they should not drag down the performance.

Just my two cents.

Ivan

  ---Original Message---
  From: Paul Ramsey [EMAIL PROTECTED]
  Subject: Re: [OSGeo-Discuss] Re: Raster data on RDBMS
  Sent: Oct 31 '08 02:11
  
  On Thu, Oct 30, 2008 at 5:25 PM, Gilberto Camara
  [EMAIL PROTECTED] wrote:
   but the benefits of having
   raster data on a DBMS are much more important.
  
  And those benefits are?
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