ISSS608 2016-17 T3 Assign AKANKSHA MITTAL - Dashboard
ISSS608 Visual Analytics and Applications
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Contents
Data Exploration
While exploring data, I found that the general visiting peak time is from May to September, out of which July was the most crowded.
Figure 1
The car-type 1 is the most common vehicle that is part of preserve traffic.
Figure 2
The movement of vehicles are more prone from 6 am to 5 pm then the traffic starts decreasing.
Figure 3
Frequency of vehicles passing through different gates.
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From this graph I found suspicious that there are few cars/bikes (car-type 1) present in the ranger-stop 1 which is protected by gate 2 but not captured by the sensor at gate 2 which we will discuss later on this page. Otherwise all others seems alright. |
Figure 4
Answer to Question 1
1. From figure 4 above, we can see that vehicles of car-type 2P, which seems ranger vehicles, are not present from 4 am to 5 am everyday throughout the year. This may be they have break at that time. Also when further investigated, it seems they have different off period on different days as shown by the below heatmap:
Figure 5
2. By looking to the figure 6, it seems that car-type 5 and 6 i.e. 2 and 3 axle bus use the preserve just for passing through purpose as it never enters the restricted zone.
3. This heatmap also shows that the car-type 4 i.e. 4 and above axle truck are not moving through camp sites, may be heavy vehicles are not allowed to enter those sites due to noise.
4. Also, 2 axle trucks with parking permission are never moving through entrance gates. This seems unusual altogether which we will discuss in Answer 3.
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Figure 6 Figure 7
4. From figure 7, we can see that the traffic movement at the camping site is zero from late mid-night till 5 am. This may be due to safety reasons and to prevent noise pollution which may affect not only humans but also the birds and animals present near that area in the preserve.
Answer to Question 2
1. From figure 6 above, we can see that car-type 1 and 2 i.e. 2 axle car/bike and trucks gather through general gate 1 and 2 and ranger-stop 0 and 2. This route General-gate 1 --> Ranger-stop 2 --> Ranger-stop 0 --> General-gate 2 or the other way round is used very frequently which can be seen through the choropleth map shown below.
Figure 8
Answer to Question 3
1. From figure 6 in solution 1, I found that few vehicles are present at ranger-stop 1 which is only accessible through gate 2, but their movement is not captured by the guarding gate, which makes the situation suspicious. When i did further investigation i found that on Friday, July 10, 2015 6 car-type 1 were present at the ranger-stop 1 without being tracked by the gate 2 that prevents general traffic to pass through.
This may not seem serious in the first glance, but surely this is a security breach issue. As we never know how many more vehicles are entering to various other parts of the preserve without being traced.
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2. Looking to the figure 5, it seems unusual that ranger vehicles are not in motion from 1 am to 5 am on Saturdays, when traffic is more than the working weekdays. This can be seen in the figure 1 in "Data Exploration" section.
3. 3. It is seen that the car-type 4 i.e. 4 and above axle trucks enters the gates (which can be accessed by the permission of rangers only) when movement of ranger vehicles is absent. When further investigated I found that these vehicles show similar movements on Tuesdays and Thursdays only, through Gate 3, Gate 5 and Gate 6. The route that these heavy loading trucks use is fixed. It uses the route Entrance 3 – Gate 6 – Ranger-stop 6 – Gate 5 – General-gate 5 – Gate 3 – Ranger-stop 3 and follows the reverse route to return to Entrance 3. The Entrance 3 is near the industrial area and from information given in mini challenge 2, there might be some illegal things going on (either dumping or extracting material).
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4. From figure 7 in solution 1, we can see that car-type 2 i.e. 2 axle truck (coded in orange color) is showing its presence at time 0 hour i.e. 12am midnight. When further investigated, i found fixed pattern in its presence which makes it suspicious to be further questioned.I found fixed pattern which is unusual in my sense because it enteres through Entrance 1 on June 19, 2015 at 2:45 PM and exits via Entrance 3 on June 22, 2015 at 12:39 AM. It uses the route: Entrance 1 – General-gate 7 – Camping 4 – Ranger-stop 4 – General-gate 1 – Ranger-stop 2 – Ranger-stop 0 – General-gate 2 – General-gate 5 – Entrance 3. It re-enters from Entrance 3 on June 26, 2015 at 2:49 PM and follows the reverse route but does not exit through Entrance 1 (June 26, 2015 at 2:49 PM, reaches at Camping 4 ). It takes the same route back to Entrance 3 and that too every alternate day. This to and fro movement happens till October 5, 2015 12.36 AM. On top of this, the Car-ID is same throughout for almost 5 months. May be the vehicle has some pass or alike.
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Answer to Question 4
As per my investigation, the top 3 reasons that can cause the decrease in number of birds can be:
- Firstly,the route that passes through General-gate 1 <--> Ranger-stop 2 <--> Ranger-stop 0 <--> General-gate 2 is very crowded. There is possibility that the smoke and noise pollution at such crowded routes makes the birds restless and hence they no more like the place to come.
- Secondly, the unusual activities of 4 axle truck that is discussed in above section can be another reason which may be hampering the bird's peaceful stay at the preserve.
- Last but not least, the movement of 2 axle truck through camping sites during midnight which is unusual may be the another reason for the birds absenteeism from the surroundings.
