On 09-May-10 18:10:27, Elisabeth Bjerke Rastad wrote: > Hello! > I have a problem which I have tried to solve for several days now.. > I have plottet a lineplot.CI in the library "sciplot", and I am > trying to plot it with a logaritmic y-axis (with exponential base). > > The problem is that; when I type "log "y"", the axis transforms > into the logaritmic of base 10. > > I wonder if someeone could tell me how to specify that I would like > to use the exponential logaritmic y-axis. I have tried a lot (but > obviously not all, I guess this problem is possible to solve..) > > Hope you would like to help me! Thank you a lot in advance!! > Greetings, > Elisabeth B. Råstad > (Master's student, Norway)
I think there may be some misunderstanding here. Or else you have not fully explained what you want. When you use plot(Y,log="y") (and lineplot.CI() is simply a wrapper for plot()) the vertical axis is scaled logarithmically with the numerical annotations corresponding to the *raw* values of Y, not to their log-transformed values. Therefore it does not matter what base of logarithms is used, since (for instance) log(y) = log(10)*log10(Y) so it is simply a linear transformation of the log scale and, since the *raw* values are used to annotate the axis it would make no difference to the plot. Compare for instance Y <- 10*runig(100) plot(Y,log="y") with plot(5*Y,log="y") I don't see anything there which is tied to the base of logs. It may be that what you want is the plot of the logarithm (i.e. the annotation of the Y-axis is in terms of log(Y), not in terms of raw Y). In that case you will need to play with the lower-level graphical paramaters such as "yaxp"; but is this is so then please confirm in more detail! Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 09-May-10 Time: 20:11:38 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.
