Itd Eac 1 13 09

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Information about Itd Eac 1 13 09

Published on January 14, 2009

Author: aleda_freeman

Source: slideshare.net

MASSGIS use of OGC Standards Aleda Freeman Office of Geographic and Environmental Information (aka MassGIS) Executive Office of Energy and Environmental Affairs (EOEEA)

Created in 1988 as the GIS office for the Executive Office of Environmental Affairs (EOEA) and its constituent agencies 1999 Legislation (MGL chap 21 sec 4B) established the “Office of Geographic and Environmental Information” in EOEA. Its mission is very broad: “ 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.” WHAT IS MASSGIS?

Created in 1988 as the GIS office for the Executive Office of Environmental Affairs (EOEA) and its constituent agencies

1999 Legislation (MGL chap 21 sec 4B) established the “Office of Geographic and Environmental Information” in EOEA. Its mission is very broad:

“ 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.”

MassGIS Users PUBLIC SECTOR State agencies Regional planning agencies Cities and towns Colleges and Universities Federal agencies PRIVATE SECTOR Private non-profit organizations GIS consulting firms Engineering and surveying firms Colleges and Universities Utilities

PUBLIC SECTOR

State agencies

Regional planning agencies

Cities and towns

Colleges and Universities

Federal agencies

PRIVATE SECTOR

Private non-profit organizations

GIS consulting firms

Engineering and surveying firms

Colleges and Universities

Utilities

Data Distributed by MassGIS Over 600 layers includes: Imagery (aerial photos, topos, sea charts) Roads, Trains Parcels Schools, Town Halls, Hospitals Landuse, Open Space Lakes, Wetlands Census data Zoning

Over 600 layers includes:

Imagery (aerial photos, topos, sea charts)

Roads, Trains

Parcels

Schools, Town Halls, Hospitals

Landuse, Open Space

Lakes, Wetlands

Census data

Zoning

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

History of Web Mapping Services at MassGIS 1999 Mass.gov E-gov initiative spurs development of mapping service 2002 MassGIS offers OGC standard based WMS/WFS with custom software (MapAccess) (requests translated to ArcIMS XML) 2004 Installation of GeoServer (open source, reference implementation of OGC standards) http://www.geoserver.org

1999 Mass.gov E-gov initiative spurs development of mapping service

2002 MassGIS offers OGC standard based WMS/WFS with custom software (MapAccess) (requests translated to ArcIMS XML)

2004 Installation of GeoServer (open source, reference implementation of OGC standards) http://www.geoserver.org

 

 

2 Main Types of OGC Services WMS – Web Map Service (GetMap) Image of a map returned (PNG, TIFF, etc) Can get a legend graphic WFS – Web Feature Service (GetFeature) Feature info returned (attributes and/or coordinates) For WMS or WFS: Request can be URL or XML Can filter on attributes or geometry Can get data back in > 3,000 projections Schemas at http://schemas.opengis.net

WMS – Web Map Service (GetMap)

Image of a map returned (PNG, TIFF, etc)

Can get a legend graphic

WFS – Web Feature Service (GetFeature)

Feature info returned (attributes and/or coordinates)

For WMS or WFS:

Request can be URL or XML

Can filter on attributes or geometry

Can get data back in > 3,000 projections

Schemas at http://schemas.opengis.net

WMS URL Example 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

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

WMS Result

WFS URL Example 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

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

WFS Result (partial)

Clients to MassGIS OGC WMS/WFS Clients using OGC WMS/WFS can connect to MassGIS’ GeoServer for maps and data Clients include: Simple URLs Viewers built w/ OpenLayers (JavaScript library) – DCR Viewers built w/ MapBuilder (JavaScript library) – DEP, DCR MassGIS desktop MORIS viewer (Java Web Start) ESRI ArcMap desktop GIS Google Maps Google Earth Open Source GIS desktop clients (such as uDig)

Clients using OGC WMS/WFS can connect to MassGIS’ GeoServer for maps and data

Clients include:

Simple URLs

Viewers built w/ OpenLayers (JavaScript library) – DCR

Viewers built w/ MapBuilder (JavaScript library) – DEP, DCR

MassGIS desktop MORIS viewer (Java Web Start)

ESRI ArcMap desktop GIS

Google Maps

Google Earth

Open Source GIS desktop clients (such as uDig)

Agencies/Orgs Using MassGIS web map services Programmers doing their own work: DEP, DCR, DOE, DFG, MassHistoric, Town of Amherst, Merrimack Valley Planning Commission, USGS Groups getting benefit of MassGIS-created applications Community Preservation Coalition, State Police, CZM

Programmers doing their own work:

DEP, DCR, DOE, DFG, MassHistoric, Town of Amherst, Merrimack Valley Planning Commission, USGS

Groups getting benefit of MassGIS-created applications

Community Preservation Coalition, State Police, CZM

ITD XML Gateway 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 Available through the gateway: WMS WFS Geocoding requests to ArcIMS (AXL, not OGC)

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

Available through the gateway:

WMS

WFS

Geocoding requests to ArcIMS (AXL, not OGC)

Sample Client – MapBuilder DCR Welldrillers Application

Sample Client – OpenLayers http://www.openlayers.org

Sample Client – OpenLayers http://www.openlayers.org

Sample Client – MORIS http://www.mass.gov/czm/mapping

GeoServer statistics 661 layers 1,005 SLD styles 14,564 hits/day images served from cache 33% of the time

661 layers

1,005 SLD styles

14,564 hits/day

images served from cache 33% of the time

Future Plans Current GeoServer upgrades to read all raster image types from SDE database. Convert last MapAccess viewers and turn off MapAccess Look into increasing performance and caching

Current GeoServer upgrades to read all raster image types from SDE database.

Convert last MapAccess viewers and turn off MapAccess

Look into increasing performance and caching

MassGIS Webservices Wiki http://lyceum.massgis.state.ma.us Working examples of requests and responses with MassGIS data

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