I solved the 1° problem with this command: matrix2plot2[,"sensor_data"]<-as.numeric(as.character((matrix2plot2[,"sensor_data"])))
In fact before the previous command I if write: str(matrix2plot2[,"sensor_data"]) I get: Factor w/ 10 levels "131.22","148.532",..: 4 6 4 6 9 8 9 8 3 1 ... And after the command matrix2plot2[,"sensor_data"]<-as.numeric(as.character((matrix2plot2[,"sensor_data"]))) if I write: str(matrix2plot2[,"sensor_data"]) I get: num [1:16] 30.4 31.2 30.4 31.2 50.1 ... ----------------------------------------- but I can't solve the 2° problem.... -- View this message in context: http://r.789695.n4.nabble.com/plot-more-plots-from-one-matrix-tp3069545p3071272.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
