I’m having trouble putting two conditions into a subset. The result is a whole bunch of NA.
> df[(df$col > 0) && (df$col < 4), ]
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2Use `&`, not `&&`, so `df[(df$col > 0) & (df$col < 4), ]`. The former is vectorized; the latter isn't and short-circuits. (Use it in `if` conditions.) Docs: `?\`&&\`` – alistaire Oct 21 '19 at 04:20
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@alistaire Thanks! That did it. – Johnny Williamson Oct 21 '19 at 15:31
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Drop the space after ',' and you only need one '&'.
df[df$col > 0 & df$col < 4,]
You may be getting NA 'cause you want OR (|) instead of AND (&).
Alberson Miranda
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2*"Drop the space after ',' "* The extra whitespace has nothing to do with the issue. in fact, for readability and to be consistent with common R coding style recommendations, it's better to keep the whitespace after the comma. You are correct in pointing out the difference between `&` and `&&`. See also [Boolean operators && and ||](https://stackoverflow.com/questions/6558921/boolean-operators-and). – Maurits Evers Oct 21 '19 at 04:27
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The single ampersand did the trick. Thanks! (White space had no effect.) – Johnny Williamson Oct 21 '19 at 15:32