OSGeo California Chapter Spring 2013 Hackathon

Event Details

• Location: http://www.hackerdojo.com/
• Date: Saturday, January 19, 2013
• Start Time: 1PM Pacific Time
• End Time: 7Pm Pacific Time

People Attending:

• Frank Wammerdam
• Ragi Burhum
• Landon Blake

Activities

SlitherGrid Hacking

Project Description:

http://redefinedhorizonsblog.com/2013/01/15/the-surveyos-projects-slithergrid-toolkit/

Task Suggestions

• Implement basic raster processes by creating implementations of the GridWorker classes.
  • Simplify raster.
  • Classify raster.
  • Fill null cells.
  • Create polygons from classified raster cells.
  • Create ridges and valleys from elevation raster.
  • Classify slopes from elevation raster.
  • Classify aspect from elevation raster.
  • Create elevation raster from LIDAR data.
  • Create elevation variability raster.
  • Create raster from polygon coverage.
• Implement basic IO support for common vector and raster formats.
  • Raster data as ASCII text file (http://paulbourke.net/dataformats/ppm/).
  • Raster data as CSV file.
  • Raster data as ESRI Grid (http://en.wikipedia.org/wiki/Esri_grid).
  • Surface as TIN file.
  • Surface as elevation grid.
  • Simple feature geometry as WKT.
  • Simple feature geometrys from Shapefiles.
• Implement basic grid painting.
  • Paint grid as PNG image file.
  • Paint grid as SVG.

Inkscape Cartography and Drafting Tools

Inkscape is a great program for creating cartographic maps. It would be even better for this task with some simple CAD and cartography tools. Inkscape can be extended through Python extensions. (http://wiki.inkscape.org/wiki/index.php/Extensions)

Task Suggestions

• Enter circle by Coordinate.
• Edit node coordinates in dialog box.
• Enter straight line by coordinates.
• Enter arc by coordinates and angle.
• Make line parallel to another line.
• Make text parallel to another line.
• Make line perpendicular to another line.
• Add nodes at distance along path.
• Match label parts to path segments.