Formulas Parsing Model matrix Get dummies Factors
Change unique() to return present elements, while levels() returns dead elements as well cut(dv::DataVector)
-
Workflow demo:
csvDataFrame()loading- Text summaries
- referencing (basic, advanced)
- assign
with()/within()- Split-Apply-Combine
- Join/merge
- Visualization
- (Generalized) linear regression modeling using formulas
-
Design/lower-level demo:
- type hierarchy
- DataVector's and NAs
- PooledDataVector's
- DataFrame's
- Indexes for column names
- rbind, cbind
- based_on?
- subDataFrame, groupedDataFrame
- grouping operations
- pipelining
- by, colwise
- stack/unstack
-
Bugs
- expand doesn't work with PooledDataVector's with pool of length 1