From: Boris Steipe
Sent: March 20, 2016 9:21 AM
To: Kristi Glover
Cc: R-help
Subject: Re: [R] Problem in selecting rows in R
Don't post in HTML, but thanks for providing dput() outout.
This code tries to follow your specifications, assuming by "time period" you
mean days. The
Don't post in HTML, but thanks for providing dput() outout.
This code tries to follow your specifications, assuming by "time period" you
mean days. The result doesn't look like your desired example though, because
that is not compatible with your specs and I can't guess what you want to do
diff
Your example is wrong: What happened to Sp2 on 1/29?
You have also apparently mixed up lower and upper case: "Sp1", "SP3" .
This will likely cause you great grief, so try to avoid or fix this in
your work.
Anyway, there are tons of ways to do this. dplyR is particularly good
at this sort of thin
Hi R Users,
Some individuals recorded multiple within a time period. But, I want to select
the row of last site within each time period for each individual. I spent a
substantial time, but no luck in selecting the rows. Would you give me a hint
for this one? I have a very large data set, but thi
Dear Kristi
You do not say what you have tried but I would have thought the key to a
solution was to split your problem up by site and write a function to
select the last observation within each site. I am not quite clear
whether this is the last in time or the last occurring row so I just
gi
5 matches
Mail list logo
