Itd Eac 1 13 09

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  • Itd Eac 1 13 09

    1. 1. MASSGIS use of OGC Standards Aleda Freeman Office of Geographic and Environmental Information (aka MassGIS) Executive Office of Energy and Environmental Affairs (EOEEA)
    2. 2. <ul><li>Created in 1988 as the GIS office for the Executive Office of Environmental Affairs (EOEA) and its constituent agencies </li></ul><ul><li>1999 Legislation (MGL chap 21 sec 4B) established the “Office of Geographic and Environmental Information” in EOEA. Its mission is very broad: </li></ul><ul><li>“ Collect, consolidate store and provide geographic and environmental information in order to improve stewardship of natural resources and the environment, promote economic development and guide land-use planning, risk assessment, emergency response and pollution control.” </li></ul>WHAT IS MASSGIS?
    3. 3. MassGIS Users <ul><li>PUBLIC SECTOR </li></ul><ul><li>State agencies </li></ul><ul><li>Regional planning agencies </li></ul><ul><li>Cities and towns </li></ul><ul><li>Colleges and Universities </li></ul><ul><li>Federal agencies </li></ul><ul><li>PRIVATE SECTOR </li></ul><ul><li>Private non-profit organizations </li></ul><ul><li>GIS consulting firms </li></ul><ul><li>Engineering and surveying firms </li></ul><ul><li>Colleges and Universities </li></ul><ul><li>Utilities </li></ul>
    4. 4. Data Distributed by MassGIS <ul><li>Over 600 layers includes: </li></ul><ul><li>Imagery (aerial photos, topos, sea charts) </li></ul><ul><li>Roads, Trains </li></ul><ul><li>Parcels </li></ul><ul><li>Schools, Town Halls, Hospitals </li></ul><ul><li>Landuse, Open Space </li></ul><ul><li>Lakes, Wetlands </li></ul><ul><li>Census data </li></ul><ul><li>Zoning </li></ul>
    5. 5. MassGIS Web Site http://www.mass.gov/mgis Web site allows users to browse data layer descriptions, view data on-line, order data and standard maps, and to download free data
    6. 6. History of Web Mapping Services at MassGIS <ul><li>1999 Mass.gov E-gov initiative spurs development of mapping service </li></ul><ul><li>2002 MassGIS offers OGC standard based WMS/WFS with custom software (MapAccess) (requests translated to ArcIMS XML) </li></ul><ul><li>2004 Installation of GeoServer (open source, reference implementation of OGC standards) http://www.geoserver.org </li></ul>
    7. 9. 2 Main Types of OGC Services <ul><li>WMS – Web Map Service (GetMap) </li></ul><ul><li>Image of a map returned (PNG, TIFF, etc) </li></ul><ul><li>Can get a legend graphic </li></ul><ul><li>WFS – Web Feature Service (GetFeature) </li></ul><ul><li>Feature info returned (attributes and/or coordinates) </li></ul><ul><li>For WMS or WFS: </li></ul><ul><li>Request can be URL or XML </li></ul><ul><li>Can filter on attributes or geometry </li></ul><ul><li>Can get data back in > 3,000 projections </li></ul><ul><li>Schemas at http://schemas.opengis.net </li></ul>
    8. 10. WMS URL Example <ul><li>http://giswebservices.massgis.state.ma.us/geoserver/wms?VERSION=1.1.1&REQUEST=GetMap&SERVICE=WMS&LAYERS=massgis:GISDATA.TOWNS_POLYM,massgis:GISDATA.SCHOOLS_PT&STYLES=Black_Lines,&BBOX=232325.38526025353,898705.3447384972,238934.49648710093,903749.1401484597&SRS=EPSG:26986&WIDTH=570&HEIGHT=435&FORMAT=image/png </li></ul>
    9. 11. WMS Result
    10. 12. WFS URL Example <ul><li>http://giswebservices.massgis.state.ma.us/geoserver/wfs?request=GetFeature&version=1.0.0&service=WFS&propertyname=TOWN,POP2000&typename=massgis:GISDATA.TOWNS_POLYM&CQL_FILTER=POP2000>100000 </li></ul>
    11. 13. WFS Result (partial)
    12. 14. Clients to MassGIS OGC WMS/WFS <ul><li>Clients using OGC WMS/WFS can connect to MassGIS’ GeoServer for maps and data </li></ul><ul><li>Clients include: </li></ul><ul><li>Simple URLs </li></ul><ul><li>Viewers built w/ OpenLayers (JavaScript library) – DCR </li></ul><ul><li>Viewers built w/ MapBuilder (JavaScript library) – DEP, DCR </li></ul><ul><li>MassGIS desktop MORIS viewer (Java Web Start) </li></ul><ul><li>ESRI ArcMap desktop GIS </li></ul><ul><li>Google Maps </li></ul><ul><li>Google Earth </li></ul><ul><li>Open Source GIS desktop clients (such as uDig) </li></ul>
    13. 15. Agencies/Orgs Using MassGIS web map services <ul><li>Programmers doing their own work: </li></ul><ul><li>DEP, DCR, DOE, DFG, MassHistoric, Town of Amherst, Merrimack Valley Planning Commission, USGS </li></ul><ul><li>Groups getting benefit of MassGIS-created applications </li></ul><ul><li>Community Preservation Coalition, State Police, CZM </li></ul>
    14. 16. ITD XML Gateway <ul><li>Some agencies (DEP, EOHHS) not allowed to contact MassGIS web services server directly – requests must go through ITD XML Gateway and be validated by schemas </li></ul><ul><li>Available through the gateway: </li></ul><ul><li>WMS </li></ul><ul><li>WFS </li></ul><ul><li>Geocoding requests to ArcIMS (AXL, not OGC) </li></ul>
    15. 17. Sample Client – MapBuilder DCR Welldrillers Application
    16. 18. Sample Client – OpenLayers http://www.openlayers.org
    17. 19. Sample Client – OpenLayers http://www.openlayers.org
    18. 20. Sample Client – MORIS http://www.mass.gov/czm/mapping
    19. 21. GeoServer statistics <ul><li>661 layers </li></ul><ul><li>1,005 SLD styles </li></ul><ul><li>14,564 hits/day </li></ul><ul><li>images served from cache 33% of the time </li></ul>
    20. 22. Future Plans <ul><li>Current GeoServer upgrades to read all raster image types from SDE database. </li></ul><ul><li>Convert last MapAccess viewers and turn off MapAccess </li></ul><ul><li>Look into increasing performance and caching </li></ul>
    21. 23. MassGIS Webservices Wiki http://lyceum.massgis.state.ma.us Working examples of requests and responses with MassGIS data

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