search for: ychu066

hi everyone, i am having difficulties with replacing the dates format in R for exporting the data set... eg: the code that i used was toms_dat<- replace(toms_dat, toms_dat ==2009-08-06, 2) toms_dat<- replace(toms_dat, toms_dat ==2009-08-04, 1) but when i export the data as into txt file or excel file the dates come up with very large numbers .....:drunk: please help me ...=) -- View

anyone know how to add text in the Trellis plot panel ?? i want to add things eg: dot dot dot. in the headrer of the panel. eg: http://old.nabble.com/file/p26486579/hist1.png hist1.png -- View this message in context: http://old.nabble.com/Trellis-Plot-tp26486579p26486579.html Sent from the R help mailing list archive at Nabble.com.

I am doing a project which involve reshaping a large dataset, can any of you please sugguest me some good reading/websites/ examples .... can be in R and SAS Thanks everyone !!! -- View this message in context: http://old.nabble.com/REshaping-large-dataset-tp26421513p26421513.html Sent from the R help mailing list archive at Nabble.com.

i was trying to do a for loop for plotting the histograms , but it doesnt work properly > library(lattice) > columns <- 8:153 > plots <- vector("list", length(columns)) > j <- 0 > for (i in columns) + { + plots[[ j <- j+1 ]] <- histogram( ~ data[,i] | data[,2],ylab = "Frequency", + xlab = "Score", xlim = c(1,5), ylim =

How should I analysis it in R ???? all the resposes variables are ordinal from 0 to 10. and the explanatory variable is a factor ... -- View this message in context: http://old.nabble.com/Multivariate-problems-.-.-.-with-200-resposes-variables-and-1-explanatory-variable-tp26522912p26522912.html Sent from the R help mailing list archive at Nabble.com.

I have the following codes but can anyone make it shorter i.e making these FOR loop into one loop ... thanks... par(mfrow=c(2,4)) for(i in 16:23){ hist(data[,i],main=paste(colnames(data)[i],sep=""),ylab="Frequency",xlim=c(1,5),xlab="Score",ylim=c(0,100)) } png("histogram.png") dev.off() par(mfrow=c(2,4)) for(i in

my teachers doesnt understand R and I don't know how to use SAS. Anyone interested in translating my codes to test whether your SAS codes are as good as R??? I can test it on SAS codes once you have translated it .... regards:working: -- View this message in context: http://old.nabble.com/Translation-from-R-codes-to-SAS.-tp26486117p26486117.html Sent from the R help mailing list

...age? (Peng Yu) > 61. Re: Spatstat, markcorr, max. radius limited?? (Rolf Turner) > 62. Re: mac os X: mprobit fails to install (stephane Luchini) > 63. Re: where is lme() that is referred by aov() help page? > (Duncan Murdoch) > 64. any equivalent SUM IF statement in R (ychu066) > 65. Re: mac os X: mprobit fails to install (David Winsemius) > 66. Re: any equivalent SUM IF statement in R (David Winsemius) > 67. Re: any equivalent SUM IF statement in R (Duncan Murdoch) > 68. Re: contour(): lines & labels in different colours? (Peter Ehlers) > 69...