I'm trying to plot a plot with mean and sd bars by three levels of a factor.
(After two hours of searching on the internet, then checking the Rbook and Rgraphs book I'm still not finding the answer. I think this is because it is a very simple question.)
I have a simple data frame with three columns: my categories, mean, sd.
I would like to do a plot with the mean by category and its sd bars, just like this one (edit: link broken)
My dataframe looks like this
color mean.temp sd
black 37.93431 2.267125
red 37.01423 1.852052
orange 36.61345 1.339032
I'm so sorry for asking this dumb question but I sincerely couldn't find any simple answer to my simple question.