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Published byHarvey Armstrong Modified over 9 years ago
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Georeferencing Methods
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1) Read Guidelines: Point-radius method Point radius method for georeferencing locality descriptions and calculating associated uncertainty. John Wieczorek, Quinghua Guo, and Robert Hijmans
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2) Review Checklist: Choose North/South American region or country of expertise
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3)Download localities off of the Gazetteer- Search for localities by entering country or state name in the “Higher Geography” field
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Click on “View” the localities
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Download the localities into text file
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Click on “Download”
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Tab-delimited text file of PNG localities
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4) Import tab-delimited text file of localities into Access or Excel format (Access file template can be found on Georeferencing Steps Website)
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5) Post your claim to the listserv- Include region/country name and number of localities downloaded
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6) Georeference the localities - first obtain maps and check georeferencing resources.
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Use paper maps, e.g. 1:24,000 Quad Map of California
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Or view maps electronically with GIS software e.g. ArcView
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Use on-line gazetteers to locate named places:
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Electronic maps can be obtained from many sources:
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MapTech Terraine Navigator - Use this for US localities, $99 a state
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Determine extent of named place while georeferencing:
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Determine error using error calculator:
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Example of city with offsets, extents and errors
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Read through descriptions of all fields in Access database on the Georeferencing steps page:
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Fill in these fields in Access database, even if did not georeference: Note: Please be explicit when providing a NoGeorefBecause reason. State the exact source of uncertainty, ambiguity or inconsistency in the locality description. ND 26 Jun, 2003.
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List of some possible reasons why no georeferencing:
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7) After finishing, ftp all files to: galaxy.cs.berkeley.edu and e-mail me with the file name & its contents (region, # of localities)
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Automated Georeferencing: Biogeomancer For HerpNET best application is for US localities Can make extents available (for US, by Jan) Eventually would include maximum error automatically Could provide input/output in format friendly to HerpNET’s database fields Would still have to be verified by georeferencers at each institution
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BioGeoMancer is found at http://bwww.biogeomancer.org
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News from NSF Standard supplemental funds not available REU (Research Experience for Undergraduates) Collaborative REU Site grant Need to have association with a university Have to provide a research experience, possibly workshops, ArcView training or museum studies Each institution would write a budget justification and description, submitting them separately with KU as lead institution KU will supply major text for grant and link them Due 15 Sep 2004, write for 3 years
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