Transcript Displaying, Enhancing and Printing Ortho Imagery in ArcGIS

Using a Mix of Technologies to Collect
and Present Geographic Information
on the Web (or desktop)
Aleda Freeman
MassGIS
(Office of Geographic and Environmental Information)
Executive Office of Energy and Environmental
Affairs (EOEEA)
http://maps.massgis.state.ma.us/temp/NEARC_webservices_09.ppt
NEARC 2009 - Nashua, NH
3 Parts
• Short history of online mapping at
MassGIS
• Examples of requests to web map
services + responses
• Gallery of the wide variety of
applications (and technologies)
using the services
NEARC 2009 - Nashua, NH
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.”
NEARC 2009 - Nashua, NH
MassGIS Users
PUBLIC SECTOR
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State agencies
Regional planning agencies
Cities and towns
Colleges and Universities
Federal agencies
PRIVATE SECTOR
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Private non-profit organizations
GIS consulting firms
Engineering and surveying firms
Colleges and Universities
Utilities
NEARC 2009 - Nashua, NH
History of Web Mapping Services
at MassGIS
• Late 1990s: Use of ESRI ArcView Internet Map Server
(discontinued)
• From late 1990s to today: Use of ESRI ArcIMS
• 1999: Mass.gov E-gov initiative spurs development of OGC
WMS/WFS mapping service
• 2002: MassGIS offers OGC standard based WMS/WFS with
custom software (MapAccess) (requests translated to ArcIMS
XML) (discontinued)
• 2004: Installation of GeoServer (open source, reference
implementation of OGC standards)
Oracle with ESRI SDE is the common data storage for all these map servers
NEARC 2009 - Nashua, NH
Current Online Mapping
iPhone
ESRI
ArcMap
SDE
with
Oracle
ESRI
ArcIMS
Gaia
MapBuilder
GeoServer
uDig
OpenLayers
Google
Earth
data
storage
Flash
map
servers
NEARC 2009 - Nashua, NH
desktop
Google
maps
browser
types of applications
2 Main Types of OGC Requests
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:
- Can filter on attributes or geometry
- Can get data back in > 3,000 projections
Requests can be URL or XML
Many output formats: JPG, PNG, GML, KML, SHP, PDF,
XLS, CSV
NEARC 2009 - Nashua, NH
WMS URL Example
http://giswebservices.massgis.state.ma.us
/geoserver/wms?VERSION=1.1.1&REQUE
ST=GetMap&SERVICE=WMS&LAYERS=ma
ssgis:GISDATA.TOWNS_POLYM,massgis:GI
SDATA.SCHOOLS_PT&STYLES=Black_Line
s,&BBOX=232325.38526025353,898705.3
447384972,238934.49648710093,903749
.1401484597&SRS=EPSG:26986&WIDTH
=570&HEIGHT=435&FORMAT=image/png
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WMS Result
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WFS URL Example
http://giswebservices.massgis.state.
ma.us/geoserver/wfs?request=GetFe
ature&version=1.0.0&service=WFS&
propertyname=TOWN,POP2000&type
name=massgis:GISDATA.TOWNS_PO
LYM&CQL_FILTER=POP2000>100000
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WFS Result
(partial)
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Clients to MassGIS OGC WMS/WFS
Clients using OGC WMS/WFS can connect to MassGIS’
GeoServer for maps and data
Clients include:
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Simple URLs (in an image tag on a web page for example)
Viewers built w/ OpenLayers (JavaScript library)
Viewers built w/ MapBuilder (JavaScript library)
Viewers built w/ Java or JSP
ESRI ArcMap
Open Source GIS desktop clients (such as uDig, Gaia)
Google Earth
Google Maps
USGS The National Map
Clients I don’t know about
NEARC 2009 - Nashua, NH
Agencies/Orgs with Apps Using
MassGIS web map services
• Programmers doing their own work:
DEP, DCR, DOE, DFG, MassHistoric, Town
of Amherst, Merrimack Valley Planning
Commission, USGS
• Orgs getting benefit of MassGIScreated applications
Community Preservation Coalition, State
Police, CZM, Massachusetts Broadband
Initiative
NEARC 2009 - Nashua, NH
Client – ArcMap
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Client – ArcCatalog/ArcMap
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Client – DCR Forestry Viewer
(OpenLayers)
http://maps.massgis.state.ma.us/dcr/forestry/forestry23.html
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Client – DCR Forestry Viewer
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(OpenLayers)
Client – State Aid Viewer
(Google maps)
http://drwren.com/true/stateaid.html
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WMS URL Example
http://giswebservices.massgis.state.ma.us/
geoserver/wms?&REQUEST=GetMap&SERVI
CE=WMS&VERSION=1.1.1&SLD=http://drw
ren.com/true/data/0209percent.xml&FORM
AT=image/png&BGCOLOR=0xFFFFFF&TRAN
SPARENT=TRUE&SRS=EPSG:3395&BBOX=905423.213366068,5215286.832320966,7827151.696402048,5293275.489246919&
WIDTH=256&HEIGHT=256
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Online SLD Snippt
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Client – The National Map
(ESRI HTML viewer)
http://nmviewogc.cr.usgs.gov
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Client – GOS Gadget
(Windows Vista or 7)
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Client – MBI Survey
(Google Maps geocoding)
Massachusetts Broadband Institute Survey
http://www.massbroadband.org/mapping/survey.html
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Client – MBI Survey
(Google Maps + WMS)
Massachusetts Broadband Institute Survey
http://maps.massgis.state.ma.us/broadband/broadband_survey_results.htm
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Client – Welldrillers
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(MapBuilder)
Client – CZM MORIS
(Java Web Start)
http://www.mass.gov/czm/mapping
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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)
NEARC 2009 - Nashua, NH
ArcIMS statistics
• 80 mapservices (composed maps)
• 5,700 requests/day
• 1,000 geocodes/day
• 40 viewers use maps or geocoding
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GeoServer statistics
• 851 layers
• 1,266 SLD named styles
• >22,000 requests/day
• images served from cache 23% of
the time
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Recent New Events
• Upgraded GeoServer (from 1.6.5 to
1.7.6)
- 100+ new rasters
- XLS, CSV outputs
- curved labels
- faster
- many other improvements/bug
fixes
NEARC 2009 - Nashua, NH
Planned Improvements
• Currently profiling GeoServer vs. SDE to
see where improvements in data access
can be made
• Plan upgrade to GeoServer version 2.0
• Continue to document ways of accessing
the web mapping services on lyceum site.
NEARC 2009 - Nashua, NH
MassGIS Webservices Info
http://lyceum.massgis.state.ma.us
Working examples of requests and responses with MassGIS data
Subscribe via RSS for updates
http://groups.google.com/group/massgis_webservices
Public Google group for users (56) of the services
http://www.mass.gov/mgis/mapping.htm
Links to many online mapping applications
http://spatialreference.org
Look up EPSG code values for projections
http://maps.massgis.state.ma.us/temp/NEARC_webservices_09.ppt
This Powerpoint
NEARC 2009 - Nashua, NH
NEARC 2009 - Nashua, NH