Webrings - Maps - Trolleys and More
Wednesday, August 29, 2012
Calculating Visibility from the Smith-9th Street Station in Brooklyn using GRASS 6.4.1.
These pictures were taken off the web. The top picture is serveral years old and shows a southbound R-46 F train approaching the Smith-9th Street after leaving the the tunnel at Carroll Street. The second picture is also off the web and was taken from the same station and is facing north showing the Culver Viaduct declining into the Carroll Street Station. Notice the buildings on the hill west of the viaduct. The above picture shows the viaduct above the Gowanus Canal. The station is above the canal and runs to the right. Notice that on the terrain analysis diagram, the hill in Carroll gardens is blocking the view of the surface (non green area) , just like in the photograph.
In the map below, the same GRASS 6.4.1 procedure was run, except that the range was expanded to 700,000 meters. I do not know why the analysis stops in middle of the harbor. The Smith-9th Street station is found on the map as a red X.