ISSS608 2017-18 T3 Assign Harisingh Q1

ISSS608 Visual Analytics and Applications - VAST Challenge 2018 MC2

Problem Background

Data Overview & Preparation

[Q1] Chemical Contamination

[Q2] Anomalies in Data

[Q3] Concerns for Wildlife

To characterize the past and most recent situation with respect to chemical contamination in the Boonsong Lekagul waterways, we can focus our attention on how the number of readings has varied with time for different chemicals. This is based on my understanding that changes in number of observed readings for a chemical is analogous to its contamination.

Overall Trend Chart

The below time-series plot suggests that number of readings observed were not consistent for the given time-frame. Though I notice an upward trend in number of readings until 2007, there has been a drop into readings in recent years.