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Final UVA Internship Presentation

Final UVA Internship Presentation. Abby Frazier, Brendan Mold, Marc Kavy, Burton Putrah, Scott Gilbert & Michael Oldham Spring 2008. Overview.

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Final UVA Internship Presentation

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  1. Final UVA Internship Presentation Abby Frazier, Brendan Mold, Marc Kavy, Burton Putrah, Scott Gilbert & Michael Oldham Spring 2008

  2. Overview • Over the course of the semester, we were able to complete the parcels from five towns: Bakersfield, Berkshire, Fairfield, Fletcher and Sheldon: 434 parcels total • We were able to establish common problems and solutions while transferring these paper maps into a digital geodatabase

  3. Methods

  4. ENTERING COORDINATES While georeferencing, right click on the tick mark to bring up the XY coordinate input menu. ENTERING COORDINATES Each tick mark requires the easting and northing data to be manually entered into ArcMap. Clear handwriting and accurate coordinate information helps eliminate error in this respect.

  5. USING THE EDITOR TOOL After successfully georeferencing four tick marks for each parcel, the pencil tool in the Editor toolbar is used to digitally draw in the parcel boundaries. Upon completion, successful parcel boundaries are saved into the shapefile/database.

  6. Problems ArcMap turns tiff files into white noise

  7. Colored in orthophotos and multiple maps taped together…

  8. All 4 east or north coordinates are the same, or barely any coordinates at all! Some also have no ground features to line up or even names on the map… Also, any map with a false easting (East coordinate in the 100,000s) had to be adjusted with the figure of 347,599.695

  9. Not to scale? Split up parcels?

  10. A: False easting shift B: Crosses town boundary

  11. Overlapping parcels

  12. Efficiency

  13. Efficiency

  14. Efficiency

  15. Efficiency

  16. Recommendations • Establish a higher minimum standard for accepting maps • Only accept maps in NAD83 • Make sure each map has at least 4 reference coordinates (that make sense) • Consistency linking spatial and attribute data • High resolution scanning or digital copy

  17. The Next Step… • Reconciling the overlap issues using geodatabase topology • Collaborating with county forester to determine actual boundaries

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