Logging object to use with the lumberjack package
A reference class object
add(meta, input, output)
Add logging info based on in- and output
dump(file = NULL, verbose = TRUE, ...)
Dump logging info to csv file. All arguments in '...' except row.names are passed to 'write.csv'
initialize(..., verbose = TRUE, label = "")
Create object. Optionally toggle verbosity.
Return logged data as a data.frame
This obeject can used with the function composition ('pipe') operator of the
lumberjack package. The logging is based on
cells function. The output is written to a
csv file wich contains the following columns.
|Expression used on data
|Total nr of cells in dataset
|Nr of non-NA cells
|Nr of empty (NA) cells
|Nr of cells still available after expr
|Nr of cells still available and unaltered
|Nr of cells still available and altered
|Nr of cells not missing anymore
This logger is suited only for operations that do not change the dimensions of the dataset.
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