Database Reference
In-Depth Information
Figure 9-17. Rat sightings by month and borough
Now we can see the line plot for each borough, and it's clear that this seasonality holds true
for all boroughs.
Do you notice the one lone brown dot in May of 2012 associated with the borough “Unspeci-
fied”? It seems that a single reported sighting did not include an address or borough. I
clicked on this point and chose to exclude it from the analysis.
Another feature that is new to Tableau is the ability to add a forecast to a line plot such as
this one. If we right-click in the graph area, and then select
Forecast
and
Show Forecast
, the
line plots update to show lighter colors for months stretching into the future, as shown in
