FOSS4G2006: GRASS related workshops and presentations

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Introduction

Geoinformatics 2006 is to be held in Switzerland over September 12-15th 2006 and we are thinking of applying to offer several workshops and presentations. This page will hold the plans and proposed programme for the GRASS component of Geo2006.

Workshops

For each proposal we'll have to write an abstract and submit it by 15th of april 2006 (http://www.foss4g2006.org). Any suggestion and contribution is welcome. Next FOSS4G2006 IRC meeting is in IRC (irc://irc.freenode.net/foss4g2006), see the channel topic for dates. To submit a workshop proposal one teacher needs to feel responsible as head and add the workshop.

Beginner's Workshop (Tuesday 8-10): (accepted)

This would propably be sth. similar to the OSG'05 workshop from Markus and Kristen Perry, material at: http://mpa.itc.it/markus/osg05/

  • teachers:
    • Otto Dassau (head)
    • Paolo Zatelli
    • Stephan Holl
    • Jachym Cepicky
  • abstract (topics):
    • first steps with GRASS (and with Quantum GIS)
    • data import and export
    • vector data analysis
    • rastor data analysis
    • image analysis (optical - short)
    • visualization (nviz - short)

Power User Workshop 1: GRASS and external DBMS (Wednesday 13-15): (accepted)

We can demonstrate database support by connecting GRASS to the most commonly used DBMS (!PostgreSQL/PostGIS, !MySQL, Oracle/Locator, sqlite, ...)

  • teachers:
    • Stephan Holl (head)
    • Otto Dassau
    • Paolo Zatelli
    • Jachym Cepicky
  • abstract (proposed topics):
    • Installation, prerequirements
    • Configuration of external RDBMS to use as attribute-storage
      • Benefits of RDBMS and GRASS
      • Sharing attribute-data with other applications
    • Configuration of spatialy enabled RDBMS (!PostGIS/Oracle Spatial)
      • reading and writing from/to such RDBMS
      • Using already existing data from such RDBMS
    • Hints for practical usage of external RDBMS.

Power User Workshop 2: Using R with FOSS4G, in particular with GRASS (Tuesday 14-16): (accepted)

Using GRASS in combination with R is often useful, starting with running R within GRASS, then encapsulating R within GRASS for standardised tasks. R contributed packages also use other FOSS4G software extensively, including GDAL, OGR, PROJ.4, Terralib, and others:

  • possible teachers:
    • Roger Bivand (head)
    • please suggest (preferably GRASS side)
  • abstract (proposed topics):
    • Installing R for FOSS4G/GRASS - task view and packages
    • Spatial classes in R
    • GRASS6/R interface
    • Other FOSS4G/R interfaces (rgdal, aRT, ...)
    • Using the interface to do geostatistics and interpolation
    • Customising FOSS4G/GRASS-side scripts

Power User Workshop: GRASS image processing (optical and Lidar) (accepted)

  • teachers:
    • LIDAR: Helena Mitasova, Maria Brovelli
    • Optical: Markus Neteler
  • abstract (proposed topics):
    • Lidar data basics, topo analysis, filtering:
      • what are lidar data and where to get them
      • import lidar DEMs and massive point data sets: r.in.gdal, v.in.ascii
      • detection of the surface objects (buildings, vegetation, ...)
      • data classification: terrain, terrain with double pulse, object, object with double pulse
      • compute high resolution DEMs from point data using v.surf.rst (relation between tension, smoothing, and level of detail) or Tykhonov regularized spline functions (v.bsplinet)
      • topographic analysis based on lidar data: r.slope.aspect, v.surf.rst, r.watershed, r.terraflow
      • (to be added if it works): create your lidar-based DEM and perform topographic analysis using GRASS6 and v.surf.rst on-line through GEONGRID project
    • Optical data processing (very short)
      • import, visualization with color table improvements
      • geocoding with automatic search of ground control points
      • ratios, filtering
      • image classification with vectorization of results

Power User Workshop: GRASS 3D and visualization (accepted)

  • teachers:
    • Helena Mitasova (assistance, if needed)
    • Massimo Cuomo (head?)
    • Jachym Cepicky
    • Soeren Gebbert
  • abstract (proposed topics):
    • 3D data and how to import or create them
      • surfaces (2D raster), volumes(3D raster):v.surf.rst, v.vol.rst (Helena)
      • 3D vectors (Jachym)
      • modify/create 3D data using r.mapcalc, r3.mapcalc
      • nviz: navigation and fly throughs (Massimo)
      • nviz: working with multiple surfaces (Helena)
      • nviz: create dynamic surfaces using file sequencing tool (Helena)
      • nviz: combining surfaces and volumes
      • nviz: working with 3D vector points with multiple attributes (Massimo)
  • 3D-vectors in GIS GRASS (Jachym)
    • How to create them
    • How to visualise them in nviz
    • v.trees3d & v.extrude & v.drape
  • Another possibilites of visualisation of GRASS 3D vectors (VTK) (Jachym)
    • How to export data for Paraview (2D, 3D raster, 3D Vector)
    • How to visualise them

power-packed FOSS4G/OSGEO CD for the participants

  • idea from Venkatesh: provide a power-packed FOSS4G/OSGEO CD to the participants and maybe keep a few CD-RW equipped machines so that people could burn their own CD at the Conference venue. This is particularly use to participants from countries where internet bandwidth is narrow. The FOSS4G CD might be a good (release) candidate for the FOSS4G/OSGEO CD if it could be further tested, polished and improved upon.
  • FOSS4G Toolkit ISO-Image can be downloaded from http://wgrass.media.osaka-cu.ac.jp/foss4g/

Presentations

For each presentation proposal the presenter has to submit an abstract by 30 June, 2006 (http://www.foss4g2006.org/internalPage.py?pageId=9&confId=1).

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