README.md -- this file you are reading
CodeBook.md -- describing variables, the data and transformations
run_analysis.R -- actual R code
-
The original raw data is here:
https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip
-
The data used in "run_analysis.R" are: -subject_test.txt -x_test.txt -y_test.txt -subject_train.txt -x_train.txt -y_train.txt -features.txt -activity_labels.txt
- Merges the training and the test sets to create one data set.
- Extracts only the measurements on the mean and standard deviation for each measurement.
- Uses descriptive activity names to name the activities in the data set
- Appropriately labels the data set with descriptive variable names.
- From the data set in step 4, creates a second, independent tidy data set with the average of each variable for each activity and each subject.
-
Just open R and run it. This "run_analysis.R" will do everything for you. There are no other function.R code needed to run "run_analysis.R".
-
And you do not need to download the data by yourself.