search for: measuresbyday

Displaying 1 result from an estimated 1 matches for "measuresbyday".

2009 Dec 04
1
Problem with date x-axis
Hello, I have a "friday" problem. I'm trying to plot the number of measures by day with this command between the 2008-07-31 and the 2009-11-13 (it works) : plot(unique(as.Date(strptime(data$date, format="%Y-%m-%d %H:%M:%S))), measuresbyday) then I would like to plot vertical lines for each month. But it doesn't work because par()$usr gives 14071.16 14579.84 -7.16 213.16 and as.numeric(as.POSIXct(unique(as.Date(strptime(data$date, format="%Y-%m-%d %H:%M:%S)))[1])) corresponding to "2008-08-01" gives 1217376000...