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Graphics for Data Quality

Graphics for Data Quality. Examples of Accuracy. Vertical. Horizontal. Why Positional Accuracy Matters!. Location of Monument in “ our data ”. Published Coordinates NAD83(86) NAD83(HARN) “ true location ”. Our GPS Coordinates. USGS Monument DFW Airport Bldg With GPS target. Scale

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Graphics for Data Quality

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  1. Graphics for Data Quality

  2. Examples of Accuracy

  3. Vertical Horizontal Why Positional Accuracy Matters!

  4. Location of Monument in “our data” Published Coordinates NAD83(86) NAD83(HARN) “true location” Our GPS Coordinates USGS Monument DFW Airport Bldg With GPS target Scale 1 : 850 Scale: 1 : 50 Each pixel is 1.6 feet

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