[R] Na.omit on matrix, does the matrix have to have a limited size

[Petr PIKAL]

Hi

I am not at all an expert on this issue but one option could be rollapply 
from zoo package

rollapply(data, 5, mean, na.rm=T)

and other function embed

rowMeans(embed(x,5), na.rm=T)

But I believe there are other options.

Regards
Petr


r-help-bounces at r-project.org napsal dne 22.01.2010 15:01:14:

> 
> Okay I had a look now at my matrix with clearer head than yesterday and 
you
> are right, some columns have their own missing values that you don't 
find in
> the other columns, I checked it yesterday many times because that was my
> guess as well but didn't see anything I don't understand why, sorry! So 
I
> converted this matrix to a time serie now. The thing is that I want to
> calculate the moving average at t on a width x (so I would take the 
values
> from t to (t - x + 1) but in the case I have Na's I want it to remain a
> moving average of width x excluding the Na value and taking the value at 
t -
> x instead. Any guess on how I could do this? I am using runmean for the
> moment
> -- 
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