1 / 11

Why My Data Doesn’t Line Up

July 13, 2011. Why My Data Doesn’t Line Up. Melita Kennedy. Answer:. Answer: Coordinate system problem. Answer: Coordinate system problem. Missing Incorrect Geographic/datum transformation not set. Scenario. Routing application for Indiana, Michigan, and Ohio.

chantale-perry
Download Presentation

Why My Data Doesn’t Line Up

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. July 13, 2011 Why My Data Doesn’t Line Up Melita Kennedy

  2. Answer:

  3. Answer: Coordinate system problem

  4. Answer: Coordinate system problem • Missing • Incorrect • Geographic/datum transformation not set

  5. Scenario • Routing application for Indiana, Michigan, and Ohio. • Indiana and Michigan data are in the same coordinate system. • New Ohio data does not line up.

  6. Goals • Do any layers have an unknown coordinate system? • Where is the ‘unknown’ data relative to the ‘known’ data? • Use ArcMap to identify the unknown coordinate system • If found, use ArcCatalog to define the metadata

  7. Demonstration!

  8. Does it work? NO • Research for more information. • Metadata? • Data provider or source? • Similar data types (1:24k quad)? • Common coordinate systems used in the area? • Spatial Adjustment or Georeferencing toolbars

  9. Resources • EsriKnowledge Base (support.esri.com) • Article ID #: 23025 • FAQ:  Projection Basics: What the GIS professional needs to know • Article ID #: 24893 • HowTo:  Identify an unknown coordinate system using ArcMap • EPSG Geodetic Parameter Dataset • http://www.epsg-regisry.org or http://www.epsg.org

  10. Questions?

More Related