Online resources for georeferencing

Online resources for georeferencing

Google Maps Search & directions Search & directions Free text search, zoom -dependentFree text search, zoom -dependent Directions for travelling by car, bike, public transport and footDirections for travelling by car, bike, public transport and foot Data compiled from different sourcesData compiled from different sources Maps Maps Datum: WGS84Datum: WGS84 Views: map, satellite (= aerial photography), terrain, Google Street View + various layers of informationViews: map, satellite (= aerial photography), terrain, Google Street View + various layers of information Data compiled from different sources (indicated at the bottom of each map)Data compiled from different sources (indicated at the bottom of each map) Third Party Plug-ins extend functionality Third Party Plug-ins extend functionality

Search now with suggestions Google Maps - Searching

Maps Satellite Terrain (under ‘More’) Earth (plug-in required) Google Maps - Viewing

Google Maps – Street View Street View

Google Maps – Street View I collected here

Google Maps – Getting coordinates Requires additional widgets or plug-ins LatLng MarkerActivate LatLng Marker in Google Maps Labs GPS LocationPosition FinderInstall a mapplet like GPS Location or Position Finder in ‘My Maps > Browse the directory’. Now deprecated! LatLong CrosshairsUse Canadensys LatLong Crosshairs bookmarklet: Distance Measurement Tool Use Distance Measurement Tool to measure extent My Maps Use My Maps to save markers, create maps, share with others (including kml import)

Google Maps – Getting coordinates Google Maps Labs LatLng Marker Right-click and‘Drop LatLng Marker’ (activate in ‘Labs’ first) LatLng Marker Right-click and‘Drop LatLng Marker’ (activate in ‘Labs’ first)

Canadensys bookmarklet Click to toggle Canadensys bookmarklet Click to toggle Crosshairs Pan map to change position Click to get coordinates Crosshairs Pan map to change position Click to get coordinates Google Maps – Getting coordinates

Distance Measurement Tool (activate in ‘Labs’ first) Distance Measurement Tool (activate in ‘Labs’ first) Google Maps – Measuring extent

D globe desktop application 3D globe desktop application Same data as Google Maps Same data as Google Maps Datum: WGS84Datum: WGS84 No Map or Terrain viewNo Map or Terrain view Similar functionalities as Google Maps Similar functionalities as Google Maps Search more limited than Google Maps (no suggestions)Search more limited than Google Maps (no suggestions) Right-click and choose ‘Get Info’ for coordinatesRight-click and choose ‘Get Info’ for coordinates Use ruler to measure extentUse ruler to measure extent Several coordinate formatsSeveral coordinate formats Numerous information layers (format: kml)Numerous information layers (format: kml) Google Earth

Google Maps interface Google Maps interface Datum: WGS84 (& NAD27)Datum: WGS84 (& NAD27) Map, satellite, hybrid and terrainMap, satellite, hybrid and terrain Topo, DOQ, NEXRAD and MapnikTopo, DOQ, NEXRAD and Mapnik Free text search not Zoom level-dependentFree text search not Zoom level-dependent Markers cannot be moved, but new markers can be placed at crosshairs (click ‘Mark’)Markers cannot be moved, but new markers can be placed at crosshairs (click ‘Mark’) Several coordinate formats for each marker + heading and distance from crosshairsSeveral coordinate formats for each marker + heading and distance from crosshairs Saves all markers automaticallySaves all markers automatically AcmeMapper

EarthTools Worldwide gazetteer for cities and towns Worldwide gazetteer for cities and towns Google Map basemaps Google Map basemaps Great for hard to find localities, especially outside US Great for hard to find localities, especially outside US Datum: WGS84Datum: WGS84 Search with country or worldwideSearch with country or worldwide Provides DMS, DD, UTM coordinatesProvides DMS, DD, UTM coordinates Includes contours (but spotty coverage)Includes contours (but spotty coverage) Example: Qandahar or Kandahar, AF Example: Qandahar or Kandahar, AF

GEOnet Names Server (GNS) Worldwide data from NGA and US BGN Worldwide data from NGA and US BGN NIMA = National Imagery and Mapping AgencyNIMA = National Imagery and Mapping Agency Datum: WGS84Datum: WGS84 Degrees minutes seconds, precision to nearest minuteDegrees minutes seconds, precision to nearest minute Feature typeFeature type Used as a source for many gazetteersUsed as a source for many gazetteers For US data, use Geographic Names Information System (GNIS): For US data, use Geographic Names Information System (GNIS):

Geographical Name Search Service (GNSS) Canadian data by the Canadian Geographical Names Service (CGNS) Canadian data by the Canadian Geographical Names Service (CGNS) Datum: NAD83Datum: NAD83 Degrees minutes seconds and decimal degreesDegrees minutes seconds and decimal degrees Feature typeFeature type Full Canadian Geographical Names datasets can be downloaded from GeoBase: Full Canadian Geographical Names datasets can be downloaded from GeoBase:

Falling Rain Worldwide gazetteer for cities and towns Worldwide gazetteer for cities and towns Great for hard to find localities, especially outside US Great for hard to find localities, especially outside US Datum: WGS84Datum: WGS84 Degrees minutes (seconds), based on NIMADegrees minutes (seconds), based on NIMA Browse to find locality (no search)Browse to find locality (no search) Provides hierarchy, alternative names, topo maps, altitude, weather information and location of nearby towns in nautical miles (nm). Tip: Use Google/Chromey to translate nm into km.Provides hierarchy, alternative names, topo maps, altitude, weather information and location of nearby towns in nautical miles (nm). Tip: Use Google/Chromey to translate nm into km. Example: Qaryeh-ye Gol`alam, Velayat-e Lowgar, AF Example: Qaryeh-ye Gol`alam, Velayat-e Lowgar, AF You can also check against Statoids: You can also check against Statoids:

Getty Thesaurus of Geographic Names (TGN) ies/tgn/ ies/tgn/ ies/tgn/ ies/tgn/ Worldwide gazetteer by The Getty Worldwide gazetteer by The Getty Useful for finding alternative and old names Useful for finding alternative and old names Feature typesFeature types Geographical hierarchyGeographical hierarchy Coordinates only to minutes (or not at all)! Use recent name and search in Google MapsCoordinates only to minutes (or not at all)! Use recent name and search in Google Maps Example: Big Apple, inhabited place, United States Example: Big Apple, inhabited place, United States

FuzzyG – JRC Fuzzy Gazetteer Worldwide gazetteer designed for bad spelling! Worldwide gazetteer designed for bad spelling! Useful for finding alternative, doubtful spelling, old names Useful for finding alternative, doubtful spelling, old names Feature typesFeature types By continentBy continent Coordinates only to minutes (or not at all)! Use recent name and search in Google MapsCoordinates only to minutes (or not at all)! Use recent name and search in Google Maps Example: Narobi, Africa Example: Narobi, Africa

UTM & MTM UTM = Universal Transverse Mercator UTM = Universal Transverse Mercator Divides earth in 60 UTM zones = 6 degrees per zoneDivides earth in 60 UTM zones = 6 degrees per zone Datum: WGS84 and othersDatum: WGS84 and others Notation: Zone Easting Northing = 17N Notation: Zone Easting Northing = 17N Zone includes hemisphere (17N) or latitude band (17T): MGRSZone includes hemisphere (17N) or latitude band (17T): MGRS Default extent: 30m (if recorded with GPS receiver)Default extent: 30m (if recorded with GPS receiver) UTM Calculator: Calculator: MTM = Modified Tranverse Mercator MTM = Modified Tranverse Mercator Used in Canada: zones are 3 degrees, different codes, false easting and scale, etc.Used in Canada: zones are 3 degrees, different codes, false easting and scale, etc. UTM/MTM Calculator: Calculator:

UTM – 17T (CN Tower in Toronto) Georeferencing workshop - Online resources Central meridian = 500,000m false easting Equator = 0m northing Equator = 10,000,000m false northing for Southern Hemisphere Equator = 10,000,000m false northing for Southern Hemisphere m east of central meridian m north of equator

Public Land Survey System (PLSS) Mainly used in the US West, Midwest and some Southern states in early surveys Mainly used in the US West, Midwest and some Southern states in early surveys System of Township-Range-Section (TRS): T13N-R14E-S15, Arizona, Coconino County System of Township-Range-Section (TRS): T13N-R14E-S15, Arizona, Coconino County Graphical Locator: Graphical Locator: Translates TRS in decimal degreesTranslates TRS in decimal degrees Datum: NAD27Datum: NAD27 Determine state and meridian (BLM): Determine state and meridian (BLM): For extents: GeorefGuide.html For extents: GeorefGuide.htmlhttp://manisnet.org/ GeorefGuide.htmlhttp://manisnet.org/ GeorefGuide.html

GPS Visualizer: GPS Visualizer: Use to translate a file with coordinates into kml or a pictureUse to translate a file with coordinates into kml or a picture Similar: for publicationsSimilar: for publicationshttp:// GeoLocate: GeoLocate: Georeferencing desktop and web applicationGeoreferencing desktop and web application Useful for roads and rivers (US only)Useful for roads and rivers (US only) Statoids: Statoids: Information about administrative divisions (provinces, counties) and their history, area, population, codes, etc.Information about administrative divisions (provinces, counties) and their history, area, population, codes, etc. No coordinates!No coordinates! Similar: CIA World Factbook CIA World Factbook See for more… See for more… Other Resources