On Wed, 22 Aug 2018, Rich Shepard wrote:
Correcting the barchard() command fixed the main issue; getting the second set of bars is still eluding me, but I'll continue working on fixing this. I'll get the years as the x-axis labels rather than year number in sequence from 1 to 29.
Despite additional reading of barchart() examples and help pages I'm still missing how to get grouping working and use the years in the dataframe as labels on the x-axis. The most recent command version (on the dput output in my previous message) is: med_max <- barchart(stage_heights$Med ~ stage_heights$Year, horizontal=FALSE, col = 'black', main = 'Median and Maximum Stage Heights\nUSGS Gauge', ylab = 'Elevation (masl)', xlab = 'Year', groups=TRUE, beside=TRUE, panel = "panel.superbar", prepanel = "prepanel.superbar",) print(med_max) I don't think that conditioning into a trellis applies to this barchart and I'm not relating the use of scales and labels in a conditioned plot to the barchart. The above command yields an error and I've not found the explanation for it: Error in get(fun, mode = "function", envir = parent.frame()) : object 'panel.superbar' of mode 'function' was not found so I'm definitely not getting the command syntax correct. Help's still needed. Rich ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.