On 21-Sep-09 18:47:50, Oliver Bandel wrote: > Hello, > in scilab /Matlab there are functions that can create linear > sequences (like R's seq()) as well as logarithmic sequences. > > > Is there a logarithmic aequivalent of seq()? > Or maybe this would be an idea for newer R-releases, > maybe a type-option with "linear" and "logarithmic" as > parameters....?! > > Ciao, > Oliver
If you mean going from a to b by "logarithmically equal" steps, then you can quite readily implement it yourself. For example: exp(log(10)*seq(log10(1),log10(100),by=0.25) [1] 1.000000 1.778279 3.162278 5.623413 10.000000 [6] 17.782794 31.622777 56.234133 100.000000 One could turn this sort of thing into a function, though a function which includes the various ways of doing it that are encapsulated in plain seq() would be quite complicated for a "normal" user to write, so I think there is an argument for your proposal! Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 21-Sep-09 Time: 20:32:22 ------------------------------ 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.