Tag Archives: GIS

Using Tableau to visualize land use change

Posted on April 10, 2015 by John Reiser

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 →

Posted in Data, Planning, PostgreSQL, Technology, Tools and Scripts, Visualization | Tagged GIS, Land Use, new jersey, postgis, postgresql, tableau, visualization | 1 Comment

Generating row and column IDs for a hexagon grid

Posted on November 17, 2014 by John Reiser

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 →

Posted in Data, PostgreSQL, Tools and Scripts | Tagged GIS, hexagons, postgis, postgresql, sql | Comments Off

“Doing more with SQL” talk at MAC URISA

Posted on October 30, 2014 by John Reiser

Last week, I gave a 30 minute talk on “Doing More with SQL” at MAC URISA 2014. The slides from the talk are available below:

Posted in Conferences, PostgreSQL, Technology | Tagged Data, dbms, GIS, postgresql, Presentation, slides, spatial, sql | 3 Comments

Using a TMS in JOSM’s Download Data window

Posted on November 19, 2013 by John Reiser

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 →

Posted in Data, OpenStreetMap, Web Mapping | Tagged crowdsourcing, GIS, Land Use, new jersey, OpenStreetMap, tile, TMS | Comments Off

Portfolio Workshop

Posted on April 26, 2013 by John Reiser

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 →

Posted in Teaching | Tagged education, environmental studies, GIS, Planning, portfolio, Teaching | Comments Off

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

Posted on November 26, 2012 by John Reiser

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 →

Posted in Data, Technology, Visualization, Web Mapping | Tagged ArcGIS, Geoserver, GIS, postgis, rendering, wms | 1 Comment

Some thoughts on the ESRI DevSummit

Posted on March 16, 2011 by John Reiser

I’m back from the sixth ESRI DevSummit. It was a great event full of informative sessions, socializing and networking. This was one of the first conferences in a while where I did not participate more than simply attending. The DevSummit … Continue reading →

Posted in Conferences, ESRI, Events, Technology | Tagged ArcGIS, Development, DevSummit, ESRI, GIS, mobile, Software | 5 Comments

Changing Landscapes: A Million Little Tiles

Posted on August 3, 2010 by John Reiser

The New Jersey Land Change Viewer, the online component of the Changing Landscapes research project required the generation of approximately one million map tiles. These tiles needed to be served quickly – the online viewer is meant to make the … Continue reading →

Posted in Aerial Photography, Data, In the News, Technology, Visualization, Web Mapping | Tagged Amazon, Apache Tomcat, Arc2Earth, Changing Landscapes, CRSSA, geolab, Geoserver, GIS, Google Maps, TileCache | 1 Comment

Changing Landscapes: Brainstorming

Posted on August 2, 2010 by John Reiser

Back in June, the New Jersey DEP Bureau of GIS released the 2007 Land Use/Land Cover data. The data was released in record time, just slightly over 3 years from the aerial photography date. We felt that we needed to … Continue reading →

Posted in Data, Google Maps, In the News, Technology, Visualization, Web Mapping | Tagged Changing Landscapes, CRSSA, DEP, geolab, GIS, Google Earth, Google Maps, KML, LULC | 2 Comments

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