Database Reference
In-Depth Information
Counting Dimensions
We introduced the concept of the
Number of Records
in the previous chapter. To review,
Number of Records
is a Measure field that Tableau generates when you connect to a data
source, and it tells you how many individual records, or rows, are present for each Dimen-
sion (or nominal data type).
To see how it works, connect to the rat sighting data set, and drag the
Number of Records
field onto the Text shelf within the
Marks
card. You will see that there are 35,655 total re-
cords in the rat sightings data set. If you then drag
Borough
onto the Rows shelf, you will re-
produce the pivot table shown in
Figure 3-13
.
