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Geocoding and Shortest Path Analysis: AEJEE Version
route and north onto I-64 far enough that the remainder of the route to
Norfolk Scope diverts your shortest path onto I-64 headed north and not
so that it returns you to I-264 west (you may have to move other circles
as well if Google Maps diverts your path back onto I-264).
Question 8.4 What is the new distance (and estimated driving time) of the
route using this new path?
Question 8.5 Without transcribing directions, what is the general route
that Google Maps has created for the new route between the museum and
the arena (taking this detour into account)?
9. Reset the route back to its original state. Now, change the route so you would
have to travel south on I-64 instead of north (and still avoiding I-264).
Question 8.6 What is the new distance (and estimated driving time) of the
route using this new path?
Question 8.7 Without transcribing directions, what is the general route
that Google Maps has created for the new route between the oceanfront
resort and the arena (taking this detour into account)?
10. All of these options can be used to model alternative routes or potential
barriers or user-defined choices during shortest-path calculations. Each
of these routes is a “best route,” just based on the parameters (such as
simulating barriers) given to the system.
8.3 Geocoding and Google Earth
Before a shortest path could be calculated, the system first had to match the
addresses of the starting and ending points to their proper location. The next
section of this lab will introduce a method of doing this address matching
(geocoding) to create a new point layer for use.
1. Open a new tab or window with your Web browser and go to the
following URL: http://batchgeo.com/.
Important note: BatchGeo is a free online tool that will let you match multiple (or single) addresses to their road-network locations and create a point
layer marking each of those address locations. In this portion of the lab, you’ll
still be working with the Virginia Beach area, focusing on the locations of the
city’s public libraries.
2. Open the VBLibraries file in the ‘Chapter8’ folder (it’s in Microsoft Excel
format). This lists the name and address of ten different public library
venues in Virginia Beach.
3. Use the mouse to select all rows and columns in the Excel file that
contain data in them (including the column headers like “Name,”
“Address,” and so on). Copy this data.
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