getdata-030

prepare

Copy the R program file run_analysis.R to the same directory as file features file

##File read in process

• features
• activity_labels
• train/subject_train
• train/X_train
• train/y_train
• test/subject_train
• test/X_train
• test/y_train

steps of processing

• read all file

• assign variable name

• merge test observes with activity label and subject number

• merge train observes with activity label and subject number

• merge test and train data

• calculate mean by activity and subject and save to file