xyplot sorted by date
Hello I have a dataframe with 3 columns C1, C2 and C3. C1 and C2 are numerical data and C3 is the date of the data (format : %Y-%m-%d %H:%M:%S") With the lattice package, I would like to plot C1 as function of C2 sorted by the dates, that is something like : xyplot(C1 ~ C2 | as.Date(C3)) It plots somethings but not the truth. I have compared the output with the output of this script x11(15,12) layout(matrix(1:4,2,2) plot(C1[C3=='2008-12-06'] ~ C2[C3=='2008-12-06']) plot(C1[C3=='2008-12-07'] ~ C2[C3=='2008-12-07']) plot(C1[C3=='2008-12-08'] ~ C2[C3=='2008-12-08']) plot(C1[C3=='2008-12-09'] ~ C2[C3=='2008-12-09']) which gives the good curves but it is not as nice as with lattice. Could you please tell me how to solve my problem ? Thanks in advance, Ptit Bleu.
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