Hi I'm trying to write a generic script for processing some data which finishes off with some plots. Given Im never sure how many columns will be in my dataframe I wanted to using the following
plot(spectra.wavelength, cormat, type = "l", ylim=c(-1,1), xlab="Wavelength (nm)", ylab="Correlation") however even if I specify as type="l" it appears plot as points (right hand plot). If I specify a range such as plot(650:700, cormat, type = "l", ylim=c(-1,1), xlab="Wavelength (nm)", ylab="Correlation") it looks good (left hand plot). If I try something like: plot(spectra.wavelength[1]:spectra.wavelength[length(spectra.wavelength)], cormat, type = "l", ylim=c(-1,1), xlab="Wavelength (nm)", ylab="Correlation") it fails with "variable lengths differ" and when I look at spectra.wavelength[1] it gives me the value but then states there are 53 levels. What does this mean and how can I get the result I want??! many thanks mike http://www.nabble.com/file/p23562717/1.pdf 1.pdf -- View this message in context: http://www.nabble.com/Using-column-length-in-plot-gives-error-tp23562717p23562717.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.