Is the problem how to produce an axis with a given minimum tick, maximum tick and given number of ticks? In that case try this (if not explain further):
# input data # z is from original example mn <- times("23:00:00") mx <- times("23:55:00") n <- 12 xt <- times(seq(mn, mx, length = n)) plot(z, xaxt = "n") axis(1, xt, sub(":00$", "", xt)) If this is not what you want please explain further. On 11/8/06, Carmen Meier <[EMAIL PROTECTED]> wrote: > Thank you for your reply Gabor, > sure, the manually written axis works fine in any configuration. > but I would prefer an "automatic" input. > That means that I would like to use the datafield[1] for the minimum > time and the datafield[max] (means the last one) for the maximum time. > divided into x steps.The datafiled size could reach more than 7000 sec. > > With regards Carmen > > Gabor Grothendieck schrieb: > > Try this: > > > > plot(z, xaxt = "n") > > xt <- paste("23", seq(5, 50, 5), sep = ":") > > axis(1, times(paste(xt, 0, sep = ":")), xt) > > > >> > >> I have some problems to get the times-scale to the x-axis the times are > >> coming from an excel sheet f. e > >> [1] "0:01:00" "0:02:00" "0:03:00" "0:04:00" "0:05:00" "0:06:00" > >> "0:07:00" > >> [8] "0:08:00" "0:09:00" "0:10:00" "0:11:00" "0:12:00" "0:13:00" > >> "0:14:00" > >> [15] "0:15:00" "0:16:00" "0:17:00" "0:18:00" "0:19:00" "0:20:00" > >> "0:21:00" > >> [22] "0:22:00" "0:23:00" "0:24:00" "0:25:00" "0:26:00" "0:27:00" > >> "0:28:00" > >> [29] "0:29:00" "0:30:00" "0:31:00" "0:32:00" "0:33:00" "0:34:00" > >> "0:35:00" > >> [36] "0:36:00" "0:37:00" "0:38:00" "0:39:00" "0:40:00" "0:41:00" > >> "0:42:00" > >> [43] "0:43:00" "0:44:00" "0:45:00" "0:46:00" "0:47:00" "0:48:00" > >> "0:49:00" > >> [50] "0:50:00" > >> > > ______________________________________________ R-help@stat.math.ethz.ch 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.