try this with your data: you had character data in the 'date' field; need to convert to Date
# convert the character 'date' to a Date object results$date <- as.Date(results$date) plot(results$date, results$DIFF, type='l') On Wed, Sep 16, 2009 at 8:40 PM, Wells Oliver <we...@submute.net> wrote: > Follow up with actual data and what I'm trying to do. Current R code/script: > plot(results$DIFF, xaxt="n", ylab="Differential", xlab="2009") > daterange=c(as.POSIXlt(min(results$date)),as.POSIXlt(max(results$date))) > axis.POSIXct(1, at=seq(daterange[1], daterange[2], by="month"), format="%b") > lines(results$DIFF, type="l", lwd=1.5, col="red", pch=15) > > dput(results): > > structure(list(date = c("2010-04-12", "2010-04-14", "2010-04-15", > "2010-04-16", "2010-04-17", "2010-04-18", "2010-04-19", "2010-04-20", > "2010-04-21", "2010-04-23", "2010-04-24", "2010-04-25", "2010-04-27", > "2010-04-28", "2010-04-29", "2010-04-30", "2010-05-01", "2010-05-02", > "2010-05-03", "2010-05-04", "2010-05-05", "2010-05-06", "2010-05-07", > "2010-05-08", "2010-05-09", "2010-05-10", "2010-05-11", "2010-05-12", > "2010-05-13", "2010-05-14", "2010-05-15", "2010-05-16", "2010-05-18", > "2010-05-19", "2010-05-20", "2010-05-21", "2010-05-22", "2010-05-23", > "2010-05-25", "2010-05-26", "2010-05-27", "2010-05-28", "2010-05-29", > "2010-05-30", "2010-05-31", "2010-06-01", "2010-06-02", "2010-06-04", > "2010-06-05", "2010-06-06", "2010-06-08", "2010-06-09", "2010-06-10", > "2010-06-11", "2010-06-12", "2010-06-13", "2010-06-14", "2010-06-15", > "2010-06-16", "2010-06-17", "2010-06-18", "2010-06-19"), DIFF = c(0, > 7, 3, 8, 2, -3, 0, -5, -6, -12, -10, -5, -11, -7, -5, -3, 5, > 6, 7, 3, 6, 9, 7, 5, 12, 10, 12, 13, 1, 5, 6, 4, 3, -1, 0, -6, > -5, 2, -2, 2, -3, 0, 4, 2, 4, 9, 12, 16, 13, 14, 16, 18, 15, > 14, 21, 23, 24, 26, 27, 26, 27, 22)), .Names = c("date", "DIFF" > ), row.names = c("1", "2", "3", "4", "5", "6", "7", "8", "9", > "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", > "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", > "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", > "43", "44", "45", "46", "47", "48", "49", "50", "51", "52", "53", > "54", "55", "56", "57", "58", "59", "60", "61", "62"), class = "data.frame") > > However, on the plot, there are no values for the dates; it seems as though > the axis.POSIXct call is failing. Thanks for any tips. > > On Wed, Sep 16, 2009 at 7:15 PM, Wells Oliver <we...@submute.net> wrote: > >> Hi all- terribly beginner question here, but I can't figure out how to put >> dates as the values for my x range in a plot. Example: >> xrange <- results$current >> yrange <- results$DIFF >> >> plot(xrange, yrange, type="n", xlab="Date", ylab="Differential") >> lines(results$DIFF, type="l", lwd=1.5, col="red") >> >> Where xrange is: >> >> > xrange >> [1] "2010-04-12" "2010-04-14" "2010-04-15" "2010-04-16" "2010-04-17" >> "2010-04-18" "2010-04-19" "2010-04-20" "2010-04-21" "2010-04-23" >> "2010-04-24" "2010-04-25" >> [13] "2010-04-27" "2010-04-28" "2010-04-29" "2010-04-30" "2010-05-01" >> "2010-05-02" "2010-05-03" "2010-05-04" "2010-05-05" "2010-05-06" >> "2010-05-07" "2010-05-08" >> [25] "2010-05-09" "2010-05-10" "2010-05-11" "2010-05-12" "2010-05-13" >> "2010-05-14" "2010-05-15" "2010-05-16" "2010-05-18" "2010-05-19" >> "2010-05-20" "2010-05-21" >> [37] "2010-05-22" "2010-05-23" "2010-05-25" "2010-05-26" "2010-05-27" >> "2010-05-28" "2010-05-29" "2010-05-30" "2010-05-31" "2010-06-01" >> "2010-06-02" "2010-06-04" >> [49] "2010-06-05" "2010-06-06" "2010-06-08" "2010-06-09" "2010-06-10" >> "2010-06-11" "2010-06-12" "2010-06-13" "2010-06-14" "2010-06-15" >> "2010-06-16" "2010-06-17" >> [61] "2010-06-18" "2010-06-19" >> >> The error being: >> >> > plot(xrange, yrange, type="n", xlab="Date", ylab="Differential") >> Error in plot.window(...) : need finite 'xlim' values >> In addition: Warning messages: >> 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion >> 2: In min(x) : no non-missing arguments to min; returning Inf >> 3: In max(x) : no non-missing arguments to max; returning -Inf >> >> Any tips on how to generate a nicely-formatted plot w/ dates in the x axis? >> Thanks. >> >> -- >> Wells Oliver >> we...@submute.net >> > > > > -- > Wells Oliver > we...@submute.net > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.