Database Reference
In-Depth Information
Figure 3-2. Connected to the DSNY Collection Tonnages data set
Notice that Tableau has decided that
Borough
and
Month
are discrete (blue) string Dimen-
sions, and that
CommunityDistrict
and the three forms of garbage (MGP stands for “Metal,
Glass, and Plastic”) collected are continuous (green) numerical Measures.
To begin, click
Borough
, hold down the Control key, click
RefuseTonsCollected
, and then
click Show Me in the upper-right corner of the screen. Notice that a number of options are
highlighted, and that there is a blue box around the
horizontal bars
option. This is Tableau's
way of suggesting you use that chart type, based on the principles of data encoding effective-
ness outlined in
Figure 1-6
.
