On 2/11/07, Milton Cezar Ribeiro <[EMAIL PROTECTED]> wrote:
> How can I delete rows from a data.frame where almost one column is.na()?
The na.omit function does this.
> set.seed(123454321)
> x <- matrix(rnorm(50, mean = 1), ncol = 5)
> x[x < 0] <- NA
> df <- data.frame(x)
> df
X1 X2 X3 X4 X5
1 NA NA NA 2.1072043 2.5623080
2 2.42544607 1.41903027 0.9652384 0.8869558 0.6824612
3 0.09657245 NA 1.6891345 NA 0.9867981
4 0.36620256 0.20111707 NA 0.6959298 0.3167434
5 2.73609165 0.07639585 NA 0.6348793 2.3797860
6 NA 0.43590076 NA 1.6082227 0.6580598
7 2.11889699 0.23726675 0.5066854 0.8967605 1.7082769
8 2.77162997 1.24540928 NA 0.4278059 1.1767292
9 0.55998073 1.80824613 0.6645171 1.7956458 2.1733173
10 NA 0.41624884 0.6055874 0.4814155 0.6728243
> na.omit(df)
X1 X2 X3 X4 X5
2 2.4254461 1.4190303 0.9652384 0.8869558 0.6824612
7 2.1188970 0.2372667 0.5066854 0.8967605 1.7082769
9 0.5599807 1.8082461 0.6645171 1.7956458 2.1733173
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