Author Archives: John Reiser

Insignificant Spaces

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.

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Key issue with New Jersey’s parcel data

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

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Mitch Hedberg and GIS

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

Posted in Data, Google Maps, In the News, Teaching, Technology, Tools and Scripts, Web Mapping | 4 Comments

Using a TMS in JOSM’s Download Data window

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

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Portfolio Workshop

Yesterday, I held a Portfolio Workshop for our Rowan Geography and Environment students. The audio of my talk along with the slides are available on the workshop web page. While I think the talk and discussion was well-received, the audio … Continue reading

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Rendering weirdness with reference data

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

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Bizarre GeoServer WMS rendering possibly due to ArcGIS handling of PostGIS data

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

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Beach erosion in Ocean City

While not as hard hit as the towns near Seaside Heights, Ocean City felt the effects of Sandy and is still in the process of cleanup. Back in July, I took a Gigapan photo of the Ocean City beach from … Continue reading

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From NOAA imagery, extent of Seaside Heights damage can be seen

The amusement piers in Seaside Heights have been significantly damaged. Funtown Pier partially destroyed. A roller coaster at Casino Pier can be seen sitting in the surf. Two buildings at the end of the Pier are entirely gone. For those … Continue reading

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Post Sandy imagery available from NOAA

NOAA‘s web viewer of post-Hurricane Sandy imagery is now live. Many portions of the Jersey Shore received incredible damage. Below are some before and after pictures compiled from the viewer. I’m hoping to get NJ’s March 2012 imagery available as … Continue reading

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