Raymond I had the same question a while ago and found the answer by typing
RSiteSearch('xyplot error bars') Peter Alspach > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Raymond Balise > Sent: Wednesday, 19 September 2007 10:52 a.m. > To: [EMAIL PROTECTED] > Subject: [R] xyplot question > > I am tring to add error bars to data in an xyplot. Below is > the content of a CSV file that I am trying to use and the > code which plots the data points and 45 degree lines in each > of the panes of the trellice. I want to add error bars that > go up and down to the limits set by the lcl and ucl values in > the data set. How the heck can I specify the error bars in a > lattice plot? > > If anyone knows how to do this can you please tell me how to > do it and more importantly point me toward a book/paper that > explains how to do this and has examples. :~) As always, > help is profoundly appreciated. > > fig2 = read.xls("figure2.csv") > > library(lattice) > library(grid) > > with(fig2, > xyplot(y ~ x | group * Method, > xlab = "", > xlim = c(-5, 1), > ylab = "", > ylim = c(-5, 1), > col = "black", > groups = group, > aspect = 1, > lx = lcl, > ux = ucl, > pch = 16 , > panel = function(x, y, ...) { > panel.superpose(x, y, ...) > panel.abline(0, 1) > > }, > ) > ) > > ###### some sample data for a CSV file ############ > > Method,group,x,y,lcl,ucl > A,Black,-3.018626791,-1.461326791,-2.068936791,-0.867106791 > A,Black,-3.304632403,-2.608322403,-3.463632403,-1.768972403 > A,Black,-2.673500283,-2.100820283,-2.708560283,-1.507230283 > A,Black,-1.700734807,-0.887104807,-1.275424807,-0.524394807 > A,Black,-0.586121342,-0.848638342,-1.169118342,-0.551044342 > A,Yellow,-3.136580929,-1.120380929,-1.720710929,-0.550799929 > A,Yellow,-2.757574147,-1.021674147,-1.474644147,-0.600298147 > A,Yellow,-2.17890461,-0.89563461,-1.34797461,-0.47309861 > A,Yellow,-1.812551095,-0.920201095,-1.215711095,-0.639398095 > A,Yellow,-1.054284002,-1.195239002,-1.453922002,-0.956836002 > A,Green,-1.639312507,-4.174222507,-4.174222507,-4.174222507 > A,Green,-1.23917727,-0.30492427,-0.68852327,-0.21611447 > A,Green,-0.66966805,-1.13230605,-1.99186605,-0.49901105 > A,Green,0.278895635,0.096514635,-0.301298365,0.300602935 > A,Green,-0.504911532,-0.894806332,-1.378339332,-0.603663332 > A,Blue,-2.969196277,-3.693096277,-3.820696277,-1.384526277 > A,Blue,-2.419573959,-2.280913959,-2.894093959,-1.672893959 > A,Blue,-1.773659064,-1.850719064,-2.450169064,-1.260569064 > A,Blue,-1.510092543,-0.851495543,-1.439472543,-0.411152543 > A,Blue,-0.595168746,-0.998596746,-1.208087746,-0.805696746 > B,Black,-2.459224263,-1.757114263,-2.364714263,-1.162324263 > B,Black,-1.817291831,-1.704651831,-2.557361831,-0.868041831 > B,Black,-2.495591512,-2.614881512,-3.456411512,-1.789931512 > B,Black,-1.216945891,-0.928095891,-1.315455891,-0.557498891 > B,Black,-0.500977651,-0.518668651,-0.817970651,-0.249855651 > B,Yellow,-2.473182951,-1.310892951,-1.909672951,-0.741403951 > B,Yellow,-2.085555297,-0.856005297,-1.252555297,-0.489987297 > B,Yellow,-2.249602851,-1.539112851,-2.010652851,-1.093110851 > B,Yellow,-1.406241001,-0.872741001,-1.183891001,-0.577481001 > B,Yellow,-0.953045757,-0.981668757,-1.241857757,-0.740871757 > B,Green,-2.487720209,-4.310240209,-4.310240209,-4.310240209 > B,Green,-2.472235352,-0.579902352,-0.963501352,-0.491092552 > B,Green,-1.35388464,-0.39377464,-0.99212464,0.00267836 > B,Green,-1.20222519,-0.58276419,-1.05847819,-0.30239519 > B,Green,-0.155542679,-0.302979679,-0.795866679,-0.000590679 > B,Blue,-2.467137219,-2.879317219,-3.541517219,-2.219037219 > B,Blue,-2.093208678,-2.467378678,-3.037568678,-1.901558678 > B,Blue,-1.968546702,-1.171728702,-1.881726702,-0.642598702 > B,Blue,-1.067931387,-1.109401387,-1.445171387,-0.785811387 > B,Blue,-0.936799562,-1.166112562,-1.361216562,-0.987562562 > > ______________________________________________ > 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. > ___________________________________________________________________ The contents of this e-mail are privileged and/or confidential to the named recipient and are not to be used by any other person and/or organisation. If you have received this e-mail in error, please notify the sender and delete all material pertaining to this e-mail. ______________________________________________ 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.