Save the common columns for each tsv to one chunk
Usage
getCommonChunk(built, chunk.vars, aes.list)
Arguments
- built
data.frame of built data.
- chunk.vars
which variables to chunk on.
- aes.list
a character vector of aesthetics.
- vars
character vector of chunk variable names to split on.
Value
a list of common and varied data to save, or NULL if there is
no common data.