October 2017
Beginner to intermediate
236 pages
7h 38m
English
Content preview from Modern R Programming Cookbook
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Getting ready
The XDF file you have created in the previous recipe Creating an XDF file from CSV input in this chapter, contains the following nine variables:
- YEAR
- QUARTER
- MONTH
- DAY_OF_MONTH
- DAY_OF_WEEK
- ORIGIN
- DEST
- DEP_DELAY
- ARR_DELAY
The objective of this recipe is to create a new binary variable binDelay, representing an indicator variable; if the departure delay is positive, then this new variable will get a value of 1, and 0 otherwise. Since you are going to use the XDF file for this operation, the task will be automatically split into chunks. You will need to load the RevoScaleR library for this operation.