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 = c(0,100),layout=c(3,1),
+ main = c(colnames(data)[i],"index",j+1),mycolors =
colors()[c(536,552,652,254,26)],
+ panel = function(..., col, mycolors) {
+ panel.histogram(..., col = mycolors[panel.number()])})
+ trellis.focus('strip', 1, 1, highlight=FALSE)
+ ltext(0.60, -0.25, 'PPM', col='blue', pos=3)
+ trellis.unfocus()
+ }
Error in grid.Call.graphics("L_downviewport", name$name, strict) :
Viewport 'plot1.strip.1.1.vp' was not found
I am not sure what was happeneing. . . can anyone help me ?