try to use xyplot of latice package. If you have a data.frame called data,
whit coluns called year and x, you could do something like:

require(lattice)
xyplot(x~year,data,
           type = "a",
           auto.key =
           list(space = "right", points = FALSE, lines = TRUE))



_______________________
Gledson Luiz Picharski
PET Estatística - UFPR
http://www.leg.ufpr.br/~gledson <http://www.leg.ufpr.br/%7Egledson>
http://www.leg.ufpr.br/pet




2009/1/10 Jim Lemon <jim@bitwrit.com.au>

> Kitty Lee wrote:
>
>> Hi. This may be a straight-forward question...
>>
>> I have a time series from 1950 to 2000 (by year) with missing values.
>> Sometimes only a year has value and the adjacent years have missing data,
>> e.g.
>>
>> 1950 2.7
>> 1951 1952
>> 1953 3.4
>> 1954
>> 1955
>> 1956 2.9
>> 1957 3.6
>> 1958 2.7
>>
>>
>> When I use plot (type='l'), the line can't connect the 'stand-alone'
>> years. Is there a way I have have R to skip over the NA and draw a line with
>> the points available?
>>
>>
>>
> Hi Kitty,
> Assuming that the above is a data frame with two columns, the second of
> which is named "value":
>
> plot(my.data.frame[!is.na(my.data.frame$value),],type="l")
>
> Jim
>
>
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> and provide commented, minimal, self-contained, reproducible code.
>

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