Tableau Sankey chart diagram may be a visualization wont to depict a be due one set of values to a different . the items being connected are called nodes and therefore the connections are called links. Sankeys is best used once you want to point out a many-to-many mapping between two categorical dimensions. Sankey chart in tableau may be a good alternative to bar charts or pie charts if you would like to point out flow quantities. In Sankey diagrams, the width of the arrows is proportional to the flow quantity it represents. So, attention is drawn immediately to the foremost important flows within the processing system
These are the subsequent steps to create a Sankey Diagram in Tableau.
Step 1:
Create a Calculated Field T
(INDEX ()-25)/4
So, once your Index is one it’ll provide you with – half-dozen, after you index goes to be a pair of it’ll provide you with -5.75 soon.
Step 2:
As per Zen Master Jeffrey Shaffer, if we tend to require forty-nine points for each dimension, we are ready to simply plot the shape of swish curve line.T need to be in between -6 and half-dozen and if we tend to require .25 increments we’ll get forty-nine values.
So, produce a Calculated Field “To pad”
IF [Order Date] = THEN one else forty-nine finish
So once your Order Date matched with Min (Order date) it’ll assign worth|a worth|a price} one and for all alternative dates value are getting to be forty-nine.
Read about the way to Create Pareto Chart in Tableau
Step 3:
Now we’d sort of a “S” formed curve (sigmoid curve). thus produce another calculated field mentioned as sigmoid perform
1/ (1+EXP (1) ^-[T])
Step 4:
Create a replacement Bin of Size one mentioned as cushioned.
Step 5:
Build our Ranking Calculation. We area unit making a running total of a spread of records and dividing by the overall Total which is in a position to supply the us of America an additive proportion.
Create a Curve Function:
Drag cushioned Bin on row shelf. Right, Click and choose “Show missing Values”. modification the Marks Card choice from “Automatic” to “Line”. choose the cushioned field that’s on the market on Row shelf and place it into path marks card
Drag T calculated Field on Row Shelf and “Compute using” cushioned (which is on the market on Path Marks card)
Drag the Curve calculated field on Column shelf. Our [Curve] calculation has 3 components thereto, [Rank 1], [Rank 2] and [T].We need every of these to handle over completely different dimensions.
We currently need to be compelled to vary the lines by size, supported the amount of records. Adding add ([Number of Records]) to Size won’t look smart because the cushioned marks haven’t any records associated with it. thus produce a calculated field mentioned as Size that ought to be computed victimization cushioned bins. this might solely be potential if we tend to use some Table calculation.