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# Coverage of Polylines Within a Polygon

Question asked by mciepluch on Jun 17, 2018
Latest reply on Jun 20, 2018 by mciepluch

Is there a way to calculate the coverage of polylines within a polygon when there are overlapping lines and parallel lines? I am working on finding route coverage of gps traces within a centerline route buffer, but ran into the issue of having multiple traces that run alongside each other, overlap, or have gaps. The result is numerous short polylines within the route polygon and no way of calculating if the lines provide full coverage of the route extent. For example, I have a route polygon that is 27 miles long, and has 56 polylines within it and the sum of the lines are 126 miles. Is there a way to get a mileage total of the lines without summarizing the overlapping/parallel lines also?

I am looking for coverage parallel to the X axes. So just the overall length coverage that the lines provide within the polygon, total length covered rather than total sum of all lines.

I am using ArcMap 10.5, advanced license, no extensions (Network Analyst) being used.