Trends Over The Years On Calls Made To The SF Fire Department
Change Between Different Views To See Trends:
Interpretation
The idea behind this visualization is to look at the trends (peaks and lows) in the number of calls through the months of the last 5 years.
We can change between three different "views", each with a different purpose. The views are:
Total Number of Calls Through the Years 2014-2018 by Month
This graph aims to show the total number of calls made to the SF Fire Department for the last 5 years, divided by month.
Here we can see that, even though there is a "peak" during the months of September-November, it is not the time of the year
with the most calls. Our focus is to deal with "fire-relatetd" calls, however, this graph does not differentiate between "fire-related"
calls and "non-fire-related" calls (such as Medical Emergencies), therefore we decided to show a view of "fire-related" calls.
Number of Fire-Related Calls Through the Years 2014-2018 by Month
This graph shows only the "fire-related" calls. It is useful to see that there is actually a peak of "fire-related" calls during
the months of May to August, specially June. This is interesting given that we would expect the months with highest temperatures,
which are August/September/October,
to have the highest number of fire-related calls.
Number of Calls with a 'Fire' Call Final Disposition Code Through Years 2014-2018 by Month
This graph shows a different "fire-related" calls using the code given to the call when disposing. The number of records shown here
are quite different from the previous graph. We tried looking for more information to understand the discrepancy, but
could not really find a satisfactory reason. In this graph we can still see there is a slight peak during the months of June to August.
Discussion
Challenges that happened were trying to make the changing of the views have a better transition. In the end, adding transition when changing the
different views seemed a little confusing and the more straightforward change seemed better.
Credit
For the interactivity (change between different charts), I used the following examples: