R help - May 2010 - 'matplot' for matrix with NAs: broken lines

Hi list,

I know that points involving NAs are not plotted in 'matplot', but when
I plot them as lines, I still want the lines to connect all the points (i.e. not
broken where there are NAs).? Please see the example below.? How can I achieve
this in 'matplot'?? If I can't, any good alternatives so I don't
have to use 'plot' + 'lines' and loop through all the columns.

Many thanks!

...Tao
> set.seed(1234)
> a=b=matrix(rnorm(9), 3,3)
> b[2,2]=NA
> matplot(a, type="b")
> matplot(b, type="b")? ## I want the two "2" connected!
> matplot(b, type="l")? ## Now my data for the second column are
missing from the graph
? 
 		 	   		  
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N:WL:en-US:WM_HMP:042010_2

Try this:

library(zoo)
matplot(na.approx(b), type = "l")

On Wed, May 5, 2010 at 2:30 PM, Tao Shi <shitao at hotmail.com>
wrote:
>
> Hi list,
>
> I know that points involving NAs are not plotted in 'matplot', but
when I plot them as lines, I still want the lines to connect all the points
(i.e. not broken where there are NAs).? Please see the example below.? How can I
achieve this in 'matplot'?? If I can't, any good alternatives so I
don't have to use 'plot' + 'lines' and loop through all the
columns.
>
> Many thanks!
>
> ...Tao
>
>> set.seed(1234)
>> a=b=matrix(rnorm(9), 3,3)
>> b[2,2]=NA
>> matplot(a, type="b")
>> matplot(b, type="b")? ## I want the two "2"
connected!
>> matplot(b, type="l")? ## Now my data for the second column
are missing from the graph
>
>
> _________________________________________________________________
> Hotmail is redefining busy with tools for the New Busy. Get more from your
inbox.
>
> N:WL:en-US:WM_HMP:042010_2
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