Hi Rich, It's better to dput() your dataset. From what you showed: burns.date.ffg<- read.table(text=" 'sampdate','func_feed_grp','pct' '2000-07-18','Filterer',0.0351 '2000-07-18','Gatherer',0.7054 '2000-07-18','Grazer',0.0442 '2000-07-18','Predator',0.1078 '2000-07-18','Shredder',0.1074 '2003-07-08','Filterer',0.1570 '2003-07-08','Gatherer',0.7039 '2003-07-08','Grazer',0.0023 '2003-07-08','Predator',0.0456 '2003-07-08','Shredder',0.0912 '2005-07-13','Filterer',0.0293 '2005-07-13','Gatherer',0.6634 '2005-07-13','Grazer',0.0055 '2005-07-13','Predator',0.0552 '2005-07-13','Shredder',0.2466 '2006-06-28','Filterer',0.0414 '2006-06-28','Gatherer',0.4776 '2006-06-28','Grazer',0.1033 '2006-06-28','Predator',0.2012 '2006-06-28','Shredder',0.1765 '2010-09-14','Filterer',0.0811 '2010-09-14','Gatherer',0.5785 '2010-09-14','Grazer',0.0284 '2010-09-14','Omnivore',0.0131 '2010-09-14','Parasite',0.0018 '2010-09-14','Predator',0.0736 '2010-09-14','Shredder',0.2234 '2011-07-13','Filterer',0.0041 '2011-07-13','Gatherer',0.9011 '2011-07-13','Grazer',0.0563 '2011-07-13','Omnivore',0.0100 '2011-07-13','Parasite',0.0037 '2011-07-13','Predator',0.0247 '2011-07-15','Filterer',0.0385 '2011-07-15','Gatherer',0.8469 '2011-07-15','Grazer',0.0147 '2011-07-15','Omnivore',0.0005 '2011-07-15','Parasite',0.0197 '2011-07-15','Predator',0.0688 '2011-07-15','Shredder',0.0109 '2012-07-11','Filterer',0.1275 '2012-07-11','Gatherer',0.5030 '2012-07-11','Grazer',0.0257 '2012-07-11','Omnivore',0.0008 '2012-07-11','Predator',0.1464 '2012-07-11','Shredder',0.1966 ",sep=",",header=TRUE) burns.date.ffg$sampdate<- as.Date(as.character(burns.date.ffg$sampdate)) library(lattice)
xyplot(pct~sampdate|func_feed_grp,data=burns.date.ffg) #no error #or xyplot(pct~sampdate,data=burns.date.ffg,groups=func_feed_grp,pch=1:7,type="l") #or xyplot(pct~sampdate|func_feed_grp,data=burns.date.ffg,groups=func_feed_grp,type="l") A.K. ----- Original Message ----- From: Rich Shepard <rshep...@appl-ecosys.com> To: arun <smartpink...@yahoo.com> Cc: Sent: Thursday, August 15, 2013 4:23 PM Subject: Re: [R] Plotting Multiple Factors By Dates With Lattice On Thu, 15 Aug 2013, arun wrote: > #or > xyplot(pct~sampdate|func_feed_grp,data=burns.date.ffg,groups=func_feed_grp,type="l") A.K., That's still producing the same error, but now I have more to look at. Thanks, Rich -- Richard B. Shepard, Ph.D. | Have knowledge, will travel. Applied Ecosystem Services, Inc. | <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863 ______________________________________________ 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.