Dendrograms are good at expressing hierarchical relationships in data. As the name derivation suggests (Greek dendro for 'tree' and gramma for 'drawing'), dendrograms are tree diagrams.
We are working with dataset NYC Taxi Data for year 2013.
You can download a subset of this data for trips made within Staten Island boro, upload it, and create the dataset NYC Taxi Data.
NYC Taxi Data
; see Creating Visuals.In the visuals menu, find and click Dendrogram (row 4, column 3).
Note that the shelves of the visual changed. They are now X, Y, Dimensions, Measures, Tooltips, and Filters.
The mandatory shelves are:
Populate the shelves from the available fields (Dimensions, Measures, and so on) in the Data menu.
Pickup Neighborhood
and Dropoff Neighborhood
, and add them to the
Dimensions shelf.Record Count
and add it
to the Measures shelf.Pickup Boro
and
Dropoff Boro
to the Filters shelf, and set them to
a single value Staten Island. Click Refresh Visual.
The new dendrogram visual appears.
Change the title to NYC Taxi - Dendrogram
.
Click (pencil icon) next to the title of the visualization to edit it, and enter the new name.
[Optional] Click (pencil icon) below the title of the visualization to add a brief description of the visual.
At the top left corner of the Visual Designer, click Save.
At the top left corner of the Visual Designer, click Close.
To adjust the dendrogram display, check all the available settings for this visual.