Monthly Archives: May 2010
pdxhash: an implementation of #pdxtags using the geohash algorithm
I never learned about geohashes in school, but I ran across the term when I was figuring out how to do fast GIS operations in the Google App Engine cloud computing platfor Continue reading
Posted in technology
Tagged civicapps, geodatabase, gis, location based service, pdxhash, postgis, spatial database
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bulk loading shapefiles into postgis
Civicapps datasets are made available in a format called a shapefile. ESRI shapefiles are the de facto standard for distributing spatial data, but they can be tricky for those who are new to GIS. Fortunately shapefiles are an open standard with a variety of useful tools available. Continue reading
Posted in technology
Tagged civicapps, geodatabase, gis, postgis, postgresql, spatial database
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rubyrep and postgresql replication roundup
While replication might not be tightly integrated into postgresql at the moment, we are lucky to have a variety of tools. Each one has different qualities and meets different needs. SlonyII is mature and easy enough to implement, but it … Continue reading