[R] plot two time series with different length and different starting point in one figure.

[David Winsemius]

On Jan 22, 2013, at 11:42 AM, Yuan, Rebecca wrote:

> Hello David,
> 
> If I use plot with the following code:
> 
> 		plot(A, type = "o", col = plot_colors[plotcolor], axes = FALSE, ann = FALSE)
> 		par(new=TRUE)
> 		plot(B, type = "o", col = plot_colors[plotcolor+1], axes = FALSE, ann = FALSE)
> 		box()
> 
> I will have the two series in one plot, but they are only from March,2012 to Nov, 2012, the nonoverlapping months are dropped out...
> 
> I know in Matlab that I can specify the x axis such as 
> 
> Plot(timeofA, A)
> Hold on;
> Plot(timeofB, B)
> 
> to get them in the same figure, but in R, I do not know how to do it.

As I said before ..... You need to use the xlim argument to 'plot'. If you insist on using "plot" twice then you will need to use 'xlim=' twice, although I thought it would be easier to use `plo`t first and `lines` second.

-- 
David.
> 
> Thanks,
> 
> Rebecca
> 
> -----Original Message-----
> From: David Winsemius [mailto:dwinsemius at comcast.net] 
> Sent: Tuesday, January 22, 2013 2:34 PM
> To: Yuan, Rebecca
> Cc: R help
> Subject: Re: [R] plot two time series with different length and different starting point in one figure.
> 
> 
> On Jan 22, 2013, at 7:07 AM, Yuan, Rebecca wrote:
> 
>> Hello,
>> 
>> I do have two different time series A and B, they are different in length and starting point. A starts in Jan, 2012 and ends in Dec, 2012 and B starts in March, 2012 and ends in Nov, 2012.
>> 
>> How can I plot those two series A and B in the same plot? I.E., from Jan. 2012 - Feb, 2012, it would have one data point from A and from Mar, 2012-Nov, 2012, it would have two data points from A and B, and in December 2012, it would have one data point from A.
> 
> You could set the xlim argument to c( min(timeA, timeB), max(timeA, timeB) ) in the `plot` of either of the series and then use `lines` for the other series, perhaps with a different color argument.
> 
> -- 
> 
> David Winsemius
> Alameda, CA, USA
> 
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