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New Jersey Land Change Viewer


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A 10 minute (talking fast) talk on the NJ Land Change Viewer, an interactive website detailing land use changes in New Jersey.

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New Jersey Land Change Viewer

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  2. 2. New Jersey 2007 LULC<br />In June 2010, the NJ DEP released the 2007 update to the NJ Land Use/Land Cover data.<br />Data now spans 21 years, from 1986 to 2007.<br />Dr. Hasse and Dr. Lathrop from CRSSA (Rutgers) analyzed the data, comparing it to previous time periods to study the urban growth patterns of the overall time period.<br />This is the third iteration of the analysis.<br />
  3. 3. Landscape Change<br />
  4. 4. 2002 Land Use <br />
  5. 5. 2007 Land Use <br />
  6. 6. 2002 Land Use <br />
  7. 7. 2007 Land Use <br />
  8. 8. 2007 Land Use <br />
  9. 9. Dynamic Landscape Change<br />2007<br />Urban surpasses Forest<br />In 21 years’ time:<br />323,811 acres of urban growth<br />- 57% is residential, 2/3s large lot housing<br />178,337 acres of farmland loss<br />114,912 acres of forest loss<br />52,294 acres of wetlands loss<br />
  10. 10. 508,681 acres of impervious surface in New Jersey.Increasing at a rate of 4,270 acres per year. <br />
  11. 11. Requirements:<br />Animated<br />Comprehensive<br />Quick and responsive<br />Cheap<br />NJ Land Change Viewer<br />
  12. 12. Animation<br />To convey the change graphically, we felt the map had to be animated.<br />Animation was achieved by altering the tiled layers’ opacity in sequence.<br />Attractive, flicker-free animated map!<br />
  13. 13. Many Layers in the Report<br />
  14. 14.
  15. 15. Map Responsiveness<br />The Land Change Viewer relies on pre-rendered map tiles.<br />The complexity of the data and the need to show 4 or 5 time period renderings would cause considerable delay if each view was rendered from GIS data. <br />
  16. 16. Land Change Viewer<br />Google MapsBase Maps<br />Bing MapsBird’s Eye<br />CloudFront<br />GeoServer<br />Amazon S3<br />TileCache<br />Land Change Viewer<br />
  17. 17. Tile Rendering & Distribution<br />CloudFront prevents rendering on-the-fly<br />For the extent of NJ, (z8-15) approximately 60,000 tiles needed to be created.<br />Each animation frame was one set of tiles.<br />1.5 million tiles had to be generated.<br />
  18. 18. On the Cheap<br />This iteration of the project had little to no funding.<br />Would not have been possible to implement without Amazon Web Services.<br />AWS bill at the time of release was about $60, and only about $100 by the end of 2010.<br />
  19. 19. Next Steps<br />GeoLab was awarded a $7,500 AWS grant to support further development.<br />Extend the Viewer to include metrics at the County and Municipal level.<br />Reshape the viewer into a tool for aiding local-level planning. <br />Use ArcGIS Server on AWS as a gateway into the data.<br />
  20. 20. “Changing Landscapes”Report & Maps Available online<br />John HasseRowan<br />Rick LathropRutgers<br /><ul><li>John ReiserRowan</li>