Unfortunately there are some limitations in terms how row-based calculations can be done in VA. You have a related discussion here: Re: SAS Visual Analytics create a Sequence variable
You can certainly use your original table straight as input to path analysis (sankey diagram) - it would render similar to this:
Note, that a sankey diagram is really designed to be used on high volume data so you rarely look at an individual but rather at the overall customer journey here. For example, what percentage of my customers first contact by phone and then visit a store? How many customers do not come back (contact) after visiting a store? How many purchase a product? etc.
The sankey diagram shows you the total count (small numbers to the start and the end of a path) taking this particular step.
No, the labeling in a sankey diagram is done given the event identifier. in your example this is probably 'wayOfContact'. You can however use special path filters here to identify a particular path(s) of interest. For more detailed investigation - you can create other visualizations given a path or event selection (e.g. bar chart showing the customers behind this path). Such visualization can have additional labels, measures etc to describe this path subset.
Hope this helps. Falko
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