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Leveraging Interactive AJAX  Web Tools for Online Maps Presentation at GeoWeb 2009 – Academic Track Steven Romalewski CUNY...
The Challenge GeoWeb 2009 – CUNY Mapping Service <ul><li>Transit connections  between where people live and where they wor...
Mapping Multivariate Data GeoWeb 2009 – CUNY Mapping Service <ul><li>Multiple symbol types </li></ul>Some traditional  car...
Map display on the desktop GeoWeb 2009 – CUNY Mapping Service Integrates many of the multivariate approaches
Map display on the desktop GeoWeb 2009 – CUNY Mapping Service Also can leverage emerging geostatistical software packages ...
Map display on the desktop GeoWeb 2009 – CUNY Mapping Service But… How does this translate online? http://stats.oecd.org/O...
Online map display GeoWeb 2009 – CUNY Mapping Service <ul><li>PROs </li></ul><ul><li>Interactive </li></ul><ul><li>Zoom in...
Enter AJAX, applied to online maps <ul><ul><li>Open Source movement rapidly making new tools more accessible, encouraging ...
New York-area examples GeoWeb 2009 – CUNY Mapping Service <ul><li>Early 2006, CUNY Mapping Service established with broad ...
A hybrid “geo stack” GeoWeb 2009 – CUNY Mapping Service <ul><li>Technology choice: combination of ESRI/Microsoft with open...
<ul><li>When you select a village: </li></ul><ul><li>It’s  highlighted in orange ; </li></ul><ul><li>Local statistics  and...
See population or housing patterns in and around your community
Map education statistics district-by-district –  NEW  for 2009!
Add transportation routes, schools, environmental sites, special districts, and more
The transparency slider 0% transparent 50% transparent 100% transparent reveals what’s underneath
Compare aerial photos with Census and land use patterns 0% transparent 70% transparent 100% transparent Click on the red m...
Explore regional views of key demographic indicators You can zoom out to see the entire island, and then double-click on t...
For more info, contact: GeoWeb 2009 – CUNY Mapping Service Steven Romalewski, Director Phone: 212-817-2033 [email_address]...
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GeoWeb2009 presentation: Long Island Index &amp; OASIS

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Presentation to Academic Track of GeoWeb 2009: Leveraging Interactive AJAX Web Tools for Online Maps

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Transcript of "GeoWeb2009 presentation: Long Island Index &amp; OASIS"

  1. 1. Leveraging Interactive AJAX Web Tools for Online Maps Presentation at GeoWeb 2009 – Academic Track Steven Romalewski CUNY Mapping Service The Graduate Center / City University of New York July 2009
  2. 2. The Challenge GeoWeb 2009 – CUNY Mapping Service <ul><li>Transit connections between where people live and where they work across Nassau and Suffolk counties; </li></ul><ul><li>Long Island’s downtowns in relation to multi-family housing density plus access to parks and open space; </li></ul><ul><li>The communities with the highest proportion of multi-family units compare with regional views of age of housing stock ; </li></ul><ul><li>Income attributes of any given community plus its concentration of rental units ; </li></ul><ul><li>Brownfield locations compared with population patterns by race/ethnicity; </li></ul><ul><li>All of this and more with aerial photography … </li></ul>… on a map, all at once, interactively, online. The Long Island Index wants to show (among other things):
  3. 3. Mapping Multivariate Data GeoWeb 2009 – CUNY Mapping Service <ul><li>Multiple symbol types </li></ul>Some traditional cartographic techniques … <ul><li>Small multiples </li></ul><ul><li>Multivariate dot density maps </li></ul><ul><li>Different textures </li></ul><ul><li>Transparency (eg., color coded DEM “draped” over hillshade) </li></ul>http://junkcharts.typepad.com/junk_charts/2009/06/reading-comprehension.html http://makingmaps.net/ http://mappingcenter.esri.com/index.cfm?fa=maps.craterLake&effect=View%20PDF
  4. 4. Map display on the desktop GeoWeb 2009 – CUNY Mapping Service Integrates many of the multivariate approaches
  5. 5. Map display on the desktop GeoWeb 2009 – CUNY Mapping Service Also can leverage emerging geostatistical software packages with multi-framed display of integrated data http://www.geovistastudio.psu.edu/tutorials/ Data_Mining_in_GeoVISTA_Studio.pdf
  6. 6. Map display on the desktop GeoWeb 2009 – CUNY Mapping Service But… How does this translate online? http://stats.oecd.org/OECDregionalstatistics/
  7. 7. Online map display GeoWeb 2009 – CUNY Mapping Service <ul><li>PROs </li></ul><ul><li>Interactive </li></ul><ul><li>Zoom in very close or out very far with ease </li></ul><ul><li>Add or remove “layers” of data from the map </li></ul><ul><li>“ Slippy” maps easy to navigate </li></ul><ul><li>CONs </li></ul><ul><li>Single frame generally rules out small multiples </li></ul><ul><li>Multiple symbol types (including dot density and texture) generally don’t translate well for thematic/analytical maps </li></ul><ul><ul><li>but they can work well overlaying roads with choropleths, for example </li></ul></ul><ul><li>Transparencies would work, but until recently the cumbersome nature of webpage redraws makes this clunky </li></ul><ul><li>Also, challenge of keeping it simple while making GIS analytic tools accessible </li></ul>
  8. 8. Enter AJAX, applied to online maps <ul><ul><li>Open Source movement rapidly making new tools more accessible, encouraging experimentation and early deployment </li></ul></ul><ul><ul><li>Geoserver & Mapserver, OpenLayers, etc </li></ul></ul><ul><ul><li>ESRI also enhancing their toolkit </li></ul></ul><ul><ul><li>New ArcGIS Server tools – caching, etc </li></ul></ul><ul><li>Some early adopters of innovative approaches: </li></ul><ul><ul><li>www.DataPlace.org www.PolicyMap.org www.MapTube.com </li></ul></ul>GeoWeb 2009 – CUNY Mapping Service <ul><li>Online mapping in a post-Google Maps world </li></ul><ul><ul><li>Ease of use and intuitive display </li></ul></ul><ul><ul><li>Relatively easy integration of multiple data sets from disparate sources (ie, mashups) </li></ul></ul><ul><ul><li>No need to click on a “ i ” tool to access attributes, or click a “hand” tool to pan the map, for example </li></ul></ul>http://sanbernardino.ca.crimeviewcommunity.com/
  9. 9. New York-area examples GeoWeb 2009 – CUNY Mapping Service <ul><li>Early 2006, CUNY Mapping Service established with broad mandate – help CUNY researchers and others leverage the power of GIS in their work, and continue developing cutting-edge interactive online mapping systems </li></ul><ul><li>Long Island Index project asked us to develop interactive mapping feature for www.longislandindex.org </li></ul><ul><ul><li>Index background – needed to make complex issues more understandable to public (esp. to visualize inter-relationships and multi-level spatial patterns) and to engage people via the Web </li></ul></ul><ul><ul><li>A second project is a complete overhaul of the Open Accessible Space Information System (OASIS) website ( www.oasisnyc.net ), first created in early 2000 using ArcIMS in collaboration with ESRI, USDA Forest Service, and more than 40 local NGOs, public agencies, businesses, and individuals. </li></ul></ul>
  10. 10. A hybrid “geo stack” GeoWeb 2009 – CUNY Mapping Service <ul><li>Technology choice: combination of ESRI/Microsoft with open source JavaScript frameworks </li></ul><ul><li>ArcGIS Desktop and ArcSDE/SQL Server to manage the data sources. </li></ul><ul><li>ArcGIS Server to generate web map services from MXDs and generate cached tiles for selected map layers. </li></ul><ul><li>OpenLayers consumes WMS resources, manages and displays the map layers, and provides map navigation tools. </li></ul><ul><li>Dynamic data feeds are also provided via REST web services. </li></ul><ul><li>Ext JS provides the overall web framework and enables us to relatively easily integrate AJAX-style tools such as dynamic transparencies. </li></ul><ul><li>With the exception of the satellite/aerial photos, we host all map layers </li></ul><ul><li>Simply too much data to simply mash it up with a basemap from Google Maps or Microsoft and we wanted cartographic control. </li></ul>
  11. 11. <ul><li>When you select a village: </li></ul><ul><li>It’s highlighted in orange ; </li></ul><ul><li>Local statistics and charts are displayed; and </li></ul><ul><li>The overview map shows where on LI you’ve zoomed to. </li></ul>The Long Island Index interactive map – visualize your community in new and powerful ways 1 2 3 Map your village
  12. 12. See population or housing patterns in and around your community
  13. 13. Map education statistics district-by-district – NEW for 2009!
  14. 14. Add transportation routes, schools, environmental sites, special districts, and more
  15. 15. The transparency slider 0% transparent 50% transparent 100% transparent reveals what’s underneath
  16. 16. Compare aerial photos with Census and land use patterns 0% transparent 70% transparent 100% transparent Click on the red marker for a bird’s eye view
  17. 17. Explore regional views of key demographic indicators You can zoom out to see the entire island, and then double-click on the list to zoom back in and see community-level detail.
  18. 18. For more info, contact: GeoWeb 2009 – CUNY Mapping Service Steven Romalewski, Director Phone: 212-817-2033 [email_address] CUNY Mapping Service at the Center for Urban Research The Graduate Center / CUNY 365 Fifth Ave., Room 6202 New York, NY  10016 www.urbanresearch.org David Burgoon, Application Architect Phone: 212-817-2038 [email_address]
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