monthly boxplot
On Aug 9, 2011, at 9:46 AM, Fernando Andreacci wrote:
I'm trying to make a monthly boxplot using this: boxplot(varmeasure ~ vardates) vardates = [1] 10/1/2010 10/1/2010 10/1/2010 10/1/2010 10/1/2010 10/1/2010 10/1/2010 [8] 10/1/2010 10/1/2010 11/1/2010 11/1/2010 11/1/2010 11/1/2010 11/1/2010 .... varmeasure = [1] 0.0 26.0 0.2 -0.2 -1.2 -0.8 0.0 4.4 -0.6 -0.2 14.4 -0.2 [13] 4.8 4.0 2.8 3.2 3.8 3.2 -11.4 0.2 0.4 3.0 0.6 6.2 .... they have same size. My problem is that R is ploting ordered by months and not by year and by months I'm getting 1/1/2011, 10/1/2010, 11/1/2010, 2/1/2011 How can I plot it in chronological order?
By converting those character strings to dates. At the moment you seem to believe that R has the ability to "know" that you want these strings to be dates. ?as.Date ?Dates
David Winsemius, MD West Hartford, CT