calculating z scores

The scale() function will center and/or scale a numeric object. Use center = TRUE to subtract the mean from the values; use scale = TRUE to divide the centered values by the standard deviation to produce z scores. center variable A scale(A, center = TRUE, scale = FALSE) generate z-scores for variable A scale(A, center = TRUE, scale = TRUE) Lets try it with EMG data

cooking with datapasta

Another day… another data set. This time I am trying to get EMG data from LabChart into R. LabChart is the software we use to record EMG data and do the first steps of data cleaning/processing. At the moment a good chunk of the cleaning process involves Excel macros, so my goal is to replicate what we have traditionally done in Excel in R, so that it is more automated and more reproducible.