OSGeo - User contributions [en]

Geoinquietosmadrid grupoR

2013-10-30T18:34:13Z

Wiki-Jorgeas80:

== Geoinquietos Madrid : Grupo de trabajo de R ==

* '''Objetivo''': R-Project enfocado a la utilización de datos abierto
* '''Facilitador'': Graeme Herbert
* '''Proxima reunión''': Introducción a R (07-11-2013) en MediaLab Prado a las 18:00 Sala C

En la [http://lists.osgeo.org/mailman/listinfo/madrid lista de correo de Geoinquietos Madrid] se irá discutiendo todo lo relativo al grupo, pero recordad empezar siempre el asunto con '''[Grupo R]''' para que la gente pueda discriminar lo que quiere y no leer.

=== Documentación ===

En este [https://www.dropbox.com/sh/04aekaphpenlxe7/l3z1TNZ2vp/Grupo%20R enlace] se encuentra el material que proporcionaron en el curso de Coursera. En esa misma carpeta está también disponible el libro que nos ha pasó Javier Luque.

En esta sección también se podrán ir añadiendo todos los enlaces a documentación que puedan resultar interesantes para el grupo.

=== Participantes ===
Lola Arteaga

[[Santiago Higuera]]

Graeme Herbert

Javi Sánchez

Jorge Arévalo

=== Primera reunión ===

Presentador: Pedro Concejero

El próximo jueves día 7 de noviembre, a las 18 horas y con una
duración de 1.30 horas, tendremos la primera sesión de R en
geoinquietos, en el medialab prado, con el siguiente objetivo:

- instalación y configuración de entorno R

- nociones básicas del lenguaje R

- instalación de librerías

- ejercicio práctico con un mapa

Para ir avanzando en el primer punto y en la instalación de librerías Pedro ha preparado dos vídeos introductorios:

- [http://vimeo.com/78022169 Repositorio CRAN (para descarga instalador)]

- [http://vimeo.com/78047189 Instalación de R, librerías y RStudio]

"En total será alrededor de media hora, espero que os resulte útil.
Para la sesión del próximo jueves sólo será requisito traer instalado
R, y espero contar con wifi (como en ocasiones anteriores) en medialab
para descargar librerías si fuera necesario. Por si acaso llevaré una
memoria usb para compartir librerías (para windows, en principio),
pero es importante que lleves tu entorno R instalado antes de la
sesión."

[[Category:Español]]
[[Category:Iniciativas Locales]]
[[Category:Geoinquietos Madrid]]

Boston Sprint 2013 Agenda

2013-03-06T08:32:12Z

Wiki-Jorgeas80: Added new GDAL driver task

Meeting times and locations can be found: [[Boston Code Sprint 2013]]
=== MapServer ===

=== GDAL ===

=== PostGIS / pgRouting ===
General Stuff
# When are we going to release 2.1. Steps remaining before we can
# SpGist -- when is that going to happen will make cut for 2.1 or push to 2.2
# How best to integrate Oslandia 3D work, concerns etc.
## Exact Geometry support
## Reference Geometry support
## (SF)CGAL
# Google SoC 2013
# Regression suites (performance, valgrind?)

Geocoding specific stuff
# Integrating Steve Woodbridge - address normalizer into PostGIS
# Packaging as part of windows builds at very least

pgRouting
# Packaging pgRouting for windows to be availabe in stack builder along side PostGIS
# Discussion of how pgRouting / PostGIS can better work together and melding the two projects
# Side note both Oslandia 3D work and pgRouting both use CGAL, possible opportunity/concern there ?
## pgRouting is looking into the possibility of drop CGAL and GAUL dependency to simplify builds
# pgRouting 2.0 release (working on building that plan now)

Raster
# Raster WKB version 1 format to address shortcomings of version 0 related to out-db rasters
# Rework of MapAlgebra for 2.1 or push to 2.2
## Performance of expression-based mapalgebra
## Performance of ST_Clip
# GDAL raster driver - good support for overviews, irregularly tiled coverage. There are some nice todo improvements, in no particular order:
## Add write support. Related ticket [http://trac.osgeo.org/gdal/ticket/4617 #4617]
## Improve reading speed. Related ticket [http://trac.osgeo.org/gdal/ticket/5016 #5016]
## Fix bug with metadata precission. Related ticket [http://trac.osgeo.org/gdal/ticket/4214 #4214]
## Check out-db raster support. Related ticket [http://trac.osgeo.org/gdal/ticket/3234 #3234]
## Low range pixel type should be transformed to a higher one. Related ticket [http://trac.osgeo.org/gdal/ticket/4562 #4562]
## Check tickets [http://trac.osgeo.org/gdal/ticket/4531 #4531], [http://trac.osgeo.org/gdal/ticket/4560 #4560] and [http://trac.osgeo.org/gdal/ticket/4561 #4561]
## Rewrite tests (gdal_autotest). Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## More tests with Mapserver. Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## Tests with QGIS plugin. Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## Deal with really BIG raster data in IRasterIO (recursion? split in several calls?). Related ticket [http://trac.osgeo.org/gdal/ticket/5012 #5012]
## Take default user, host, password. Related ticket [http://trac.osgeo.org/gdal/ticket/4533 #4533]
## Review SQL strings (avoid SQL injection). Related ticket [http://trac.osgeo.org/gdal/ticket/5013 #5013]
## Take care of locale (I needed to export LC_ALL=C to make it work with QGIS). Related ticket [http://trac.osgeo.org/gdal/ticket/5014 #5014]
## Allow user to specify resolution strategy when dealing with different pixel size sources (maybe an option in connection string). Related ticket [http://trac.osgeo.org/gdal/ticket/5011 #5011]
## Allow user to specify the desired srid when dealing with different srids. Related ticket [http://trac.osgeo.org/gdal/ticket/5011 #5011]
# QGIS - good support for large coverage (overviews, irregularly tiled coverage), import export. What need to be enhanced?
# ST_CreateOverview()
# Test performance of ST_Union() when number of pixel increase
# Define another (faster?) way to rasterize a vector coverage with ST_MakeEmptyTiledCovererage(), ST_BurnToRaster(geometry, raster) & ST_UnionToRaster()
# Discuss a more flexible way to rasterize a vector coverage using ST_MapAlgebraFct()
# Raster using pthreads in the future?
# Rewrite parts of raster2pgsql
# pgsql2raster prototype?
# Discuss "PostGIS Extra PL/pgSQL Function Set"
# Discuss interpolation - from some point, from millions of points
# Test regular blocking constraint
# Discuss viewshed
# ST_SlitToGrid(geometry, x, y)
# Discuss integration of raster2pgsql into the GUI

=== PDAL ===

Boston Sprint 2013 Agenda

2013-03-05T00:20:36Z

Wiki-Jorgeas80: Added links to GDAL PostGIS Raster tickets

Meeting times and locations can be found: [[Boston Code Sprint 2013]]
=== MapServer ===

=== GDAL ===

=== PostGIS / pgRouting ===
General Stuff
# When are we going to release 2.1. Steps remaining before we can
# SpGist -- when is that going to happen will make cut for 2.1 or push to 2.2
# How best to integrate Oslandia 3D work, concerns etc.
# Google SoC 2013
# Regression suites (performance, valgrind?)

Geocoding specific stuff
# Integrating Steve Woodbridge - address normalizer into PostGIS
# Packaging as part of windows builds at very least

pgRouting
# Packaging pgRouting for windows to be availabe in stack builder along side PostGIS
# Discussion of how pgRouting / PostGIS can better work together and melding the two projects
# Side note both Oslandia 3D work and pgRouting both use CGAL, possible opportunity/concern there ?
## I am looking into the possibility of drop CGAL and GAUL dependency to simplify builds
# pgRouting 2.0 release (working on building that plan now)

Raster
# Raster seems in darn good shape for 2.1 so least worried about raster. Great job :)
# Rework of MapAlgebra for 2.1 or push to 2.2
## Performance of expression-based mapalgebra
## Performance of ST_Clip
# GDAL raster driver - good support for overviews, irregularly tiled coverage. Some nice todo improvements:
## Add write support. Related ticket [http://trac.osgeo.org/gdal/ticket/4617 #4617]
## Fix bug with metadata precission. Related ticket [http://trac.osgeo.org/gdal/ticket/4214 #4214]
## Check out-db raster support. Related ticket [http://trac.osgeo.org/gdal/ticket/3234 #3234]
## Low range pixel type should be transformed to a higher one. Related ticket [http://trac.osgeo.org/gdal/ticket/4562 #4562]
## Check tickets [http://trac.osgeo.org/gdal/ticket/4531 #4531], [http://trac.osgeo.org/gdal/ticket/4560 #4560] and [http://trac.osgeo.org/gdal/ticket/4561 #4561]
## Rewrite tests (gdal_autotest). Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## More tests with Mapserver. Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## Tests with QGIS plugin. Related ticket [http://trac.osgeo.org/gdal/ticket/5010 #5010]
## Deal with really BIG raster data in IRasterIO (recursion? split in several calls?). Related ticket [http://trac.osgeo.org/gdal/ticket/5012 #5012]
## Take default user, host, password. Related ticket [http://trac.osgeo.org/gdal/ticket/4533 #4533]
## Review SQL strings (avoid SQL injection). Related ticket [http://trac.osgeo.org/gdal/ticket/5013 #5013]
## Take care of locale (I needed to export LC_ALL=C to make it work with QGIS). Related ticket [http://trac.osgeo.org/gdal/ticket/5014 #5014]
## Allow user to specify resolution strategy when dealing with different pixel size sources (maybe an option in connection string). Related ticket [http://trac.osgeo.org/gdal/ticket/5011 #5011]
## Allow user to specify the desired srid when dealing with different srids. Related ticket [http://trac.osgeo.org/gdal/ticket/5011 #5011]
# QGIS - good support for large coverage (overviews, irregularly tiled coverage), import export. What need to be enhanced?
# ST_CreateOverview()
# Test performance of ST_Union() when number of pixel increase
# Define another (faster?) way to rasterize a vector coverage with ST_MakeEmptyTiledCovererage(), ST_BurnToRaster(geometry, raster) & ST_UnionToRaster()
# Discuss a more flexible way to rasterize a vector coverage
# Raster using pthreads in the future?
# Rewrite parts of raster2pgsql
# pgsql2raster prototype?
# Discuss "PostGIS Extra PL/pgSQL Function Set"
# Discuss interpolation - from some point, from millions of points
# Test regular blocking constraint
# Discuss viewshed
# Discuss integration of raster2pgsql into the GUI

=== PDAL ===

Boston Sprint 2013 Agenda

2013-03-04T23:27:50Z

Wiki-Jorgeas80: Added another GDAL driver task

Boston Sprint 2013 Agenda

2013-03-04T23:24:14Z

Wiki-Jorgeas80: Added GDAL driver tasks