[R] plot cummulative sum from calendar time

[John Kane]

I am not sure I really understand what you want but
will this work?

tt<-c("03-Nov-1997","09-Oct-1991","27-Aug-1992","01-Jul-1994","19-Jan-1990",
"12-Nov-1993","08-Oct-1993","10-Nov-1982","08-Dec-1986","23-Dec-1987","02-Aug-1995",
"20-Oct-1998","29-Apr-1991","16-Mar-1994","20-May-1991","28-Dec-1987","14-Jul-1999",
"27-Nov-1998","09-Sep-1999","26-Aug-1999","20-Jun-1997","05-May-1995","26-Mar-1998",
"15-Aug-1994","24-Jun-1996","02-Oct-1996","12-Aug-1985","24-Jun-1992","09-Jan-1991",
"04-Mar-1988")
tt1 <-  as.Date(tt, "%d-%b-%Y"))
aa <- cumsum(1:length(tt))
plot(tt1,aa)


--- gallon li <gallon.li at gmail.com> wrote:

> I have the following list of observations of
> calendar time:
> 
>  [1] 03-Nov-1997 09-Oct-1991 27-Aug-1992 01-Jul-1994
> 19-Jan-1990 12-Nov-1993
>  [7] 08-Oct-1993 10-Nov-1982 08-Dec-1986 23-Dec-1987
> 02-Aug-1995 20-Oct-1998
> [13] 29-Apr-1991 16-Mar-1994 20-May-1991 28-Dec-1987
> 14-Jul-1999 27-Nov-1998
> [19] 09-Sep-1999 26-Aug-1999 20-Jun-1997 05-May-1995
> 26-Mar-1998 15-Aug-1994
> [25] 24-Jun-1996 02-Oct-1996 12-Aug-1985 24-Jun-1992
> 09-Jan-1991 04-Mar-1988
> 3230 Levels: 01-Apr-1987 01-Apr-1990 01-Apr-1991
> 01-Apr-1996 ... 31-Oct-1998
> 
> I want to make a plot where x-axis is the calendar
> time and y-axix is the
> cumulative sum of observations observed on or before
> that dates.
> 
> Can anyone give some suggestions?
> 
> 	[[alternative HTML version deleted]]
> 
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