[R] Plot link points

[Roy Mendelssohn]

Look at:

http://geography.uoregon.edu/geogr/topics/maps.htm

-Roy

On Jan 10, 2009, at 1:48 AM, Jim Lemon wrote:

> 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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Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
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