Using the lattice package in R, I would like to plot one row of 7 diagrams, all using the same Y-axis. The diagrams should be (vertical) line diagrams. The problem is that my data are each in 7 separate dataframes (containing X and Y data), with different slightly different limits on the Y-axis data.
Besides all tutorials, I don't get it right. What must my Code look like? Is there even a clean solution for this in lattice?
You could combine all your data frames into one and then do something like
xyplot(Y~X|odf,data=combinedDF,layout=c(7,1))
where odf is an indicator column of the original data frame. This by default should use a common y scale.
Apart from combining the data, you could create 7 separate plots, then print them.
p1 <- xyplot(Y~X,data=DF1,ylim=c(Y1,Y2))
p2 <- xyplot(Y~X,data=DF2,ylim=c(Y1,Y2))
etc.
To print:
print(p1,split=c(1,1,7,1),more=TRUE)
print(p2,split=c(2,1,7,1),more=TRUE)
...
print(p7,split=c(7,1,7,1),more=FALSE)
see ?print.trellis.
Of course, arranging single plots like this doesn't really use the features of lattice. You could just as easily do this with base graphics using layout or par(mfrow=c(1,7)) for example, and a common ylim.
