- the variables of interest are stored as key:value pairs and
- a single data cell could contain multiple (unknown) number of key:value pairs.
Basically, we want to convert input dataset on LHS to the output dataset on the RHS as illustrated in the graphic below –
The objective is to separate these key-value pairs and store the values in corresponding key columns.
The hadleyverse packages make this task a fairly simple one, especially tidyr, stringr and magrittr.