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Category Archives: Data
This is the second in a series of articles regarding a side project of mine, NJParcels.com. Read the first article here. Read part three here. Once GlassboroMap and NJ Parcels started to get considerable traffic, I began receiving emails asking for … Continue reading
I was home sick on Wednesday, so while I was on the couch I decided to dive into Tableau Public, a free desktop visualization tool. At IERP, we use Tableau for some of our public dashboards. Other than some minor … Continue reading
Often, when I go to tackle a problem, I look to use the simplest tools available first. Unix (and its derivatives/descendants, like Mac OS X and Linux) was designed with the following principles in mind: Write programs that do one … Continue reading
Recently when working on a project that uses a hexagon grid, I used the awesome mmqgis plugin to QGIS to produce the grid. The one small shortcoming with the tool is that I would prefer to have a cell identifier … Continue reading
Yesterday, I mentioned that I discovered ArcGIS’s inconsistent handling of spaces within text fields. Today, I tested to see how ArcGIS handles NULLs, Empty Strings and Spaces within its native file formats.
I’ve been working on a project to visualize differences between assessed value and levied taxes in New Jersey and I discovered a bug in some of New Jersey’s parcel data. New Jersey uses “PAMS_PIN” as a key between the GIS … Continue reading
So, a recent post on Reddit highlighted a Mitch Hedberg joke. “La Quinta” is Spanish for “next to Denny’s.” Thinking about this, I realized we could use GIS to find the number of La Quintas that are next to Denny’s. … Continue reading
Now that our crowdsourced update to New Jersey’s land use map has had some serious contributions – we’re just shy of 20,000 user-contributed points of new (2007-2012) urbanization – I realized that many of these locations are in need of … Continue reading
Continued from yesterday’s post: Bizarre GeoServer WMS Rendering Both the NJ Landscape Project habitat data and the Municipalities data are complex. It is hard to pinpoint a rendering issue when the data is very complex. I prepared a reference data … Continue reading
I just submitted a problem to the OpenGeo support forum regarding an unusual bug I’ve discovered in GeoServer. Multipart polygon geometries are producing “unintentional art” when rendered through GeoServer. Several GIS data sets that have been brought into PostGIS using … Continue reading