An SpatialLinesDataFrame representing a directed road structure. The data.frame attached has three columns, V1, V2 and Dir that determine the direction of the network. The column Dir indicates the type of flow existing between V1 and V2: none (0), from V1 to V2 (1), from V2 to V1 (-1) or bidirectional (2).
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An object of class SpatialLinesDataFrame with 2513 rows and 3 columns.
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