Fixed file path.
Minor edits to messy-data.
Added extra displays of the data so that it is easier to follow the html version.
Fixed file paths.
The iris dataset was not loaded during the data-manipulation section. The code would still work since R will find iris in the attached package. I just have them load it into the global env with data, but an alternative option would be to use it as an opportunity to reiterate scoping.
Added more displays of objects in apply lecture.
Added short definitions of apply family functions.
Minor edits to apply lesson.
Merge pull request #37 from jdblischak/data-manipulation

Data manipulation