lgy-hz / project-getting-and-cleaning-data

The script conducts jobs as following:

read the files in folder 'a1'b0UCI HAR Dataset/test using lapply and put the 3 data frame into list1

read the files in folder 'a1'b0UCI HAR Dataset/train using lapply and put the 3 data frame into list2

load the labels from activity_labels.txt and subject_text/train.txt

mutate the data frames of list1 and list2 together

put the labels into column names of the mutated data frame

extract the measurement on mean, both test data and train data, save into separated variables as result_test1 and result_train1

extract the measurement on standard deviation, both test data and train data, save into separated variables as result_test2 and result_train2

combine measurement on mean and Std together into result_test3 and result_train3

drop the measurement on meadFreq, saved into result_test4 and result_train4

merge train and test data, saved into result

replace the descriptive labels

write the data frame into .txt