Hello, I have a large data set of points (120K) to large to open in most spreadsheet programs and i need to calculate the true RMS of the waveform. The waveform is jagged, how could i go about calculating the RMS value of all the data points from a table that i have read in? Thank you for any help, i hope i posted this to the right list :-P a quick search on mailing list archives provided no insight :-( Steven Michalske -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._