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Original Metadata Description: Based on a ".dbf" copy of a 'csv' file provided by Jeffrey Pitcher [Maine DOT] on 5/26/2010. The column headers in the original ".csv" file were trimmed to remove leading and trailing spaces. Raw data table extracted by Jeffery Pitcher on 5/26/2010 from the FRA Database. Data was mapped as an X/Y Event and those rows in the original table that had a Latitude or Longitude value equal to 0 were not included.October 2013: Data converted to NAD 83 UTM Zone 19N by Ginger McMullin, Maine DEP. Many mileposts had been located several times over several years so that 2-5 locations within 50 feet or so of each other were recorded for each milepost. Several rail lines also had duplicate milepost numbers. In order to obtain distinct milepost numbers, the data was separated into 8 main rail lines. For areas with duplicate mileposts in the same general location, a Dissolve was run to combine the mileposts into a multipoint dataset, and then a Feature to Point was run to obtain one milepost in the approximate midpoint of duplicate locations. |