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 -- View this message in context: http://n4.nabble.com/Na-omit-on-matrix-does-the-matrix-have-to-have-a-limited-size-tp1068000p1100054.html Sent from the R help mailing list archive at Nabble.com.
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