The trans_fn attribute of each Field object gets called by the DataMap during the transform method call, and gets passed a number of values, including the vector of current values in the field, the complete dataframe, the input/output FieldMap objects, etc.
There is currently no documentation regarding what values are passed to the trans_fn for use by the developer. There should be.
The
trans_fn
attribute of eachField
object gets called by theDataMap
during thetransform
method call, and gets passed a number of values, including the vector of current values in the field, the complete dataframe, the input/outputFieldMap
objects, etc.There is currently no documentation regarding what values are passed to the
trans_fn
for use by the developer. There should be.