I did a lot of hiking around Sedona, Arizona a few weeks ago, and wanted to map my GPS way points and tracks in QGIS over some WMS (web mapping service) base map layers. I recently switched to QGIS 3 since I need to use that in my book (by the time it comes out […]
Goodbye SQLite Manager… Late last year, I discovered that my favorite SQLite GUI was defunct. The SQLite Manager was a plugin for Firefox that allowed you to create and interact with SQLite databases with a simple yet highly functional interface. It had good support for importing and exporting csv files, color coding of cells based […]
The staff at the Population Division at NYC City Planning take the limitations of the American Community Survey (ACS) data seriously. Census estimates for tract-level data tend to be unreliable; to counter this, they aggregate tracts into larger Neighborhood Tabulation Areas (NTAs) to produce estimates that have better precision. In their Census Factfinder tool, they […]
A month ago at this time I was in Boston for FOSS4G 2017 (Free and Open Source for Geospatial), which is the international conference for free and open source GIS enthusiasts, developers, educators, and practitioners. I updated my introductory GIS / QGIS workshop manual to 2.18 Las Palmas (which is slated to be the next […]
A short list of resources that I frequently use and refer others to (and in a few instances, things I’ve created or maintain). Data Sources Baruch Geoportal – repository that Frank maintains at his college NYU Spatial Repository – member of the geoblacklight community Open Geoportal – metasite for the OGP community Geolode – catalog […]
This is just a short excerpt for the about page.