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Using QGIS, GRASS and PostGIS to answer some difficult questions

Using QGIS, GRASS and PostGIS to answer some difficult questions . How Open Source GIS can help make your life easier and help you find beer on a Sunday. A simple spatial query. Vector data types available through OGR. Where's the beer?. Geocode Query. QGIS and the GRASS Plugin.

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Using QGIS, GRASS and PostGIS to answer some difficult questions

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  1. Using QGIS, GRASS and PostGISto answer some difficult questions How Open Source GIS can help make your life easier and help you find beer on a Sunday

  2. A simple spatial query

  3. Vector data types available through OGR

  4. Where's the beer?

  5. Geocode Query

  6. QGIS and the GRASS Plugin

  7. GRASS’ Vector to Raster Tool

  8. r.grow Output

  9. SELECT Round(Sum(c.pop10*(ST_Area(ST_Intersection(c.geom, z.the_geom))) / c.totarea)) FROM (SELECT ST_Union(ST_Buffer(b.geom,8046.72)) as the_geom FROM breweries.brewery b) as z, indiana.block_popc WHERE ST_Intersects(z.the_geom, c.geom); Counting all Hoosiers Who Live Within Five Miles of a Microbrewery

  10. Multipolygon Buffer

  11. QGIS Generated Contours

  12. Current OSGeo Limitations • Cartography / Layout • Editing • Versioned Editing • Mr Sid support • File Geodatabase support

  13. PostGIS: Refractions Research http://refractions.net QGIS: QGIS Foundation http://qgis.org PostGIS In Action By Leo Hsu & Regina Obe http://postgis.us GIS StackExchange http://gis.stackexchange.com Philip Bernard Mapping & Spatial Solutions pb@mappingandspatial.com Where to go for help

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