Hi r-help-boun...@r-project.org napsal dne 04.05.2009 09:53:19:
> > Hi > > For a school project I have a file with 120 columns and ~2000 lines. This > file contains timestamps of spike detected in 60 channels, and the time > elapsed between the last spike. > > I need to clean too high values. About 98% of values are between 0 and 2000 > and 2% are between 2000 and 20'000. I want to get rid of theses values. > > Please could you help me? Decide your threshold value. Let say it is 2000. Then it depends how do you want to get rid of the data. e.g. mat[mat>2000]<-NA shall put NA values instead all items which were bigger than 2000. Regards Petr > > Regards > > Thom > -- > View this message in context: http://www.nabble.com/Need-to-clean-a-table%2C- > and-compute-mean-and-SD-tp23364460p23364460.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. ______________________________________________ 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.
