Thank you for your suggestion. This could be a solution that I didn't think of.
But I forgot to say that I didn't want to change the original data frame (I have other code that depends on the original df and on the original factor levels). I was looking more for an implementation directly in the xyplot call (same as I did for one factor). Is it possible/simple to do? Thank you, Rafael Gabor Grothendieck wrote: > Try this: > > levels(df$fact2) <- c("faro","porto","lisbon","setubal") > xyplot( value ~ year | fact1*fact2, data=df, type="b") > > > On 9/22/06, Rafael Duarte <[EMAIL PROTECTED]> wrote: > >> Dear list, >> My problem is to change the strip text of lattice panels when using two >> factors. >> I have a data frame with two factors: >> >> df <- expand.grid( "fact1"=c("y","b","r"), >> "fact2"=c("far","por","lis","set"), "year"=1991:2000, "value"= NA) >> df[,"value"] <- sample(1:50, 120, replace=TRUE) >> >> I can make simple xyplot and change the text of the factor levels with >> strip.custom: >> >> require("lattice") >> xyplot( value ~ year | fact1, data=df, type="b", subset= fact2=="far", >> strip = strip.custom(bg=gray.colors(1,0.95), factor.levels=c("yellow", >> "black", "red")), >> layout=c(1,3) >> ) >> >> But how can I change the text of the factor levels when using both >> factors as in this plot: >> xyplot( value ~ year | fact1*fact2, data=df, type="b") >> >> (fact2 levels text should change to: >> c("faro","porto","lisbon","setubal")) >> >> I read the help for strip.default and the emails archive, tried with >> "which.given" but could not find out how to accomplish this. >> >> Many thanks, >> Rafael Duarte >> >> -- >> Rafael Duarte >> Marine Resources Department - DRM >> IPIMAR - National Research Institute for Agriculture and Fisheries >> Av. BrasÃlia, 1449-006 Lisbon - Portugal >> Tel:+351 21 302 7000 Fax:+351 21 301 5948 >> e-mail: [EMAIL PROTECTED] >> >> ______________________________________________ >> R-help@stat.math.ethz.ch 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. >> -- Rafael Duarte Marine Resources Department - DRM IPIMAR - National Research Institute for Agriculture and Fisheries Av. BrasÃlia, 1449-006 Lisbon - Portugal Tel:+351 21 302 7000 Fax:+351 21 301 5948 e-mail: [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch 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.