Data Processing Problem Creating Disconnected Road Network

The lower left picture shows source

linear (road) data as white line segments.

These segments will be “expanded”

using their WIDTH attribute to create

road areas of the proper width.

The larger image shows the result of this

processing. Yellow outlined areas

represent expanded source linear data.

Heavy black lines represent centerlines

of expanded roads.

Note the 2 intersections in the smaller

oval area and their post-processing

representations in the larger oval: one of

them has been correctly processed, the

other has not.

SOURCE LINEAR DATA

EXPANDED LINEAR DATA

“WITH PROCESSING”

Correctly processed intersection

Incorrectly processed

source data intersection resulting in a disconnected road network

Source data intersections

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