Dear All, I am very new to R - trying to teach myself it for some MSc coursework.
I am plotting temperature data for two different sites over the same time period which I have downloaded from a university weather station data archive. I am using the following code to create the plot plot ( x = TEMP3[,"TIME"], y = TEMP3[,"TEMP"], type = "p", col = TEMP3[,"SITE"], pch = 3, main = "Temperature changes", xlab = "Date", ylab = "Temberature[C]") I managed to use col = TEMP3["SITE"] to plot the two different sites( BG1 and EA7) in different colours, but I am struggling to change the colours. I wanted to up a colour scheme to match the site, so tried BG1 <- "blue" EA7 <- "green" before the plot function, but the graphic just came out with red and black as before. There are other datasets in which there are more than two sites so I would really like to learn how to use colour to distinguish between them on a plot. Any direction would be very greatly received! Thank you very much Sarah -- View this message in context: http://r.789695.n4.nabble.com/Scatter-plot-using-colour-to-group-points-tp4092794p4092794.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.
