to run the R code: please type R CMD BATCH run_analysis.R log
the variable names are as following x samplename activity tbodyacc-mean-x tbodyacc-mean-y tbodyacc-mean-z tgravityacc-mean-x tgravityacc-mean-y tgravityacc-mean-z tbodyaccjerk-mean-x tbodyaccjerk-mean-y tbodyaccjerk-mean-z tbodygyro-mean-x tbodygyro-mean-y tbodygyro-mean-z tbodygyrojerk-mean-x tbodygyrojerk-mean-y tbodygyrojerk-mean-z tbodyaccmag-mean tgravityaccmag-mean tbodyaccjerkmag-mean tbodygyromag-mean tbodygyrojerkmag-mean fbodyacc-mean-x fbodyacc-mean-y fbodyacc-mean-z fbodyacc-meanfreq-x fbodyacc-meanfreq-y fbodyacc-meanfreq-z fbodyaccjerk-mean-x fbodyaccjerk-mean-y fbodyaccjerk-mean-z fbodyaccjerk-meanfreq-x fbodyaccjerk-meanfreq-y fbodyaccjerk-meanfreq-z fbodygyro-mean-x fbodygyro-mean-y fbodygyro-mean-z fbodygyro-meanfreq-x fbodygyro-meanfreq-y fbodygyro-meanfreq-z fbodyaccmag-mean fbodyaccmag-meanfreq fbodybodyaccjerkmag-mean fbodybodyaccjerkmag-meanfreq fbodybodygyromag-mean fbodybodygyromag-meanfreq fbodybodygyrojerkmag-mean fbodybodygyrojerkmag-meanfreq tbodyacc-std-x tbodyacc-std-y tbodyacc-std-z tgravityacc-std-x tgravityacc-std-y tgravityacc-std-z tbodyaccjerk-std-x tbodyaccjerk-std-y tbodyaccjerk-std-z tbodygyro-std-x tbodygyro-std-y tbodygyro-std-z tbodygyrojerk-std-x tbodygyrojerk-std-y tbodygyrojerk-std-z tbodyaccmag-std tgravityaccmag-std tbodyaccjerkmag-std tbodygyromag-std tbodygyrojerkmag-std fbodyacc-std-x fbodyacc-std-y fbodyacc-std-z fbodyaccjerk-std-x fbodyaccjerk-std-y fbodyaccjerk-std-z fbodygyro-std-x fbodygyro-std-y fbodygyro-std-z fbodyaccmag-std fbodybodyaccjerkmag-std fbodybodygyromag-std fbodybodygyrojerkmag-std