Course project for Coursera Getting and Cleaning Data.

Instruction:

1. Please download data from url: https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip
2. unzip dataset
3. run R and set working directory to first level directory of unziped dataset
4. run run_analysis.R

Script produces two data frames:

• myData - selected data from SAMASUNG training and test data
• myTidy - independent tidy data set with the average of each variable for each activity and each subject.

For more lecture-43/slied-16 friendly names use:

colnames(myTidy) <-gsub("^t","",gsub("^f","fft",gsub("_","-",tolower(colnames(myTidy)))))

Script uses sqldf library.