Hi all, I can not seem to get what I want using the Lattice package to generate an array of histograms of spatialgrid dataframe data.
I can use the sp package and spplot to generate an array of maps that display an array of spatialgrid dataframe data -- that's good. I have: spplot(ann_bias,xlim=c(1423987.5,2614612.5),ylim=c(-5862637.5,-4624387.5),at=brks,col.regions=colp(length(brks)-1),main="NOAA/NWS OHRFC Stage-3/MPE Precipitation Estimate Bias with respect to PRISM\n1997 - 2016") Which works... I can also do histogram(ann_bias$bias1997), which works too. I have also created a 'time-series' of boxplots successfully with these data as well... But if I try: year<-c('1997','1998','1999','2000','2001','2002','2003','2004','2005','2006','2007','2008','2009','2010','2011','2012','2013','2014','2015','2016') dat<-c(ann_bias$bias1997,ann_bias$bias1998,ann_bias$bias1999,ann_bias$bias2000,ann_bias$bias2001,ann_bias$bias2002,ann_bias$bias2003,ann_bias$bias2004,ann_bias$bias2005,ann_bias$bias2006,ann_bias$bias2007,ann_bias$bias2008,ann_bias$bias2009,ann_bias$bias2010,ann_bias$bias2011,ann_bias$bias2012,ann_bias$bias2013,ann_bias$bias2014,ann_bias$bias2015,ann_bias$bias2016) > data<-data.frame(year=c(year),bias=c(dat)) > histogram(~ bias | year, data=data) I get a lattice plot of histograms, where the years vary, but all the histograms are identical, which I know they should not be. It seem that all the data from the combined spatialgrid dataframes are being used and repeated. Obviously, I'm not constructing the data correctly. Can someone tell me what I doing wrong. I've poured over this for a solid day, now... Regards, Tom [[alternative HTML version deleted]] ______________________________________________ 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.