Created
September 20, 2014 17:27
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The dangers of rendering many distinct NA's as if they were all the same
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| > v <- c(1, 2, 3, 4) | |
| > ind <- NA | |
| > ind | |
| [1] NA | |
| > v[ind] | |
| [1] NA NA NA NA | |
| > ind <- -ind | |
| > ind | |
| [1] NA | |
| > v[ind] | |
| [1] NA | |
| > ind <- -ind | |
| > ind | |
| [1] NA | |
| > v[ind] | |
| [1] NA |
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Wow. This deserves a mention in the R Inferno. :-)