ISSS608 Sivagamy DATA PREPARATION
ISSS608 ASSIGNMENT - MINI CHALLENGE 1 2017
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Data Description
The data file contains data recorded from sensors around the Boonsong Lekagul Nature Preserve. A map containing the locations of roadways and sensors throughout the Preserve is also shared to us. Traffic enters and exits the Preserve through official Entrances. There are several Campgrounds where both day-camping and overnight camping are allowed. There are certain roadways restricted to the Preserve Rangers only. The Preserve Rangers are monitoring traffic through various segments of the Preserve, so other sensors are found in various other locations.
Entry gates are positioned at the Preserve entrances. Each vehicle receives an entry ticket at the gate and is assigned a vehicle class, the entry is recorded. The entry ticket contains an RF-tag that enables the Preserve sensors to pick up the passage of a vehicle through the Preserve. Each vehicle surrenders their entry ticket when exiting the Preserve and the exit is recorded.
When vehicles enter the Preserve, they must proceed through a gate and obtain a pass. Vehicles receiving a pass with a P appended to their category are park service vehicles that have access to all parts of the Preserve. Currently, the Preserve vehicles are only 2 axle trucks, so they are designated as 2P vehicle type.
Preserve Map
The map provided presents the Preserve in terms of a 200x200 gridded area. The grid is oriented with north at the top of the map. Grid location (0,0) is at the lower left corner of the map (the SW corner). They have superimposed both the roadways and the sensor locations on this grid. The map shows an area 12 miles x 12 miles.
Roadways are indicated by white colored pixels on the map. Each sensor type has its own unique color: Entrances (green), General-gates (blue), Gates (red), Ranger-stops (yellow), and Camping (orange).
| Gate Category | Gate Name |
|---|---|
| Camping | camping(0-8) |
| Entrance Gate | entrance(0-4) |
| General Gates | general-gate(0-7) |
| Gate | gate(0-8) |
| Ranger Stops | ranger-stop(0-7) |
| Ranger Base | ranger-base |
Table with gate details
The sensors are located at the different gates shown in the Preserve Map. There are as follows:
1. Entrances : All vehicles pass through an Entrance when entering or leaving the Preserve.
2. General-gates : All vehicles may pass through these gates. These sensors provide valuable information for the Preserve Rangers trying to understand the flow of traffic through the Preserve.
3. Gates : These are gates that prevent general traffic from passing. Preserve Ranger vehicles have tags that allow them to pass through these gates to inspect or perform work on the roadway beyond.
4. Ranger-stops : These sensors represent working areas for the Rangers, so you will often see a Ranger-stop sensor at the end of a road managed by a Gate. Some Ranger-stops are in other locations however, so these sensors record all traffic passing by.
5. Camping : These sensors record visitors to the Preserve camping areas. Visitors pass by these entering and exiting a campground.
