I am confused by the behavior of the below piece of code. The NAs are
making it past the logical call ==0. I am sure that I am missing
something. I just don't understand this behavior. Thanks for your
help in advance.
code###
left -
On 18.07.2010 18:02, stephen sefick wrote:
I am confused by the behavior of the below piece of code. The NAs are
making it past the logical call ==0. I am sure that I am missing
something. I just don't understand this behavior. Thanks for your
help in advance.
On Jul 18, 2010, at 12:02 PM, stephen sefick wrote:
I am confused by the behavior of the below piece of code. The NAs are
making it past the logical call ==0. I am sure that I am missing
something. I just don't understand this behavior. Thanks for your
help in advance.
The problem is in data.frame[ and any NA in a logical vector will return a
row of NA's. This can be avoid by wrapping which() around the logical vector
which seems entirely wasteful or using subset().
The basic philosophy that causes this behaviour is sensible in my
opinion: missing values
On Jul 18, 2010, at 2:52 PM, Hadley Wickham wrote:
The problem is in data.frame[ and any NA in a logical vector will
return a
row of NA's. This can be avoid by wrapping which() around the
logical vector
which seems entirely wasteful or using subset().
The basic philosophy that causes
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