dear Hadley and Bert,
thank you very much for your suggestions. I asked one question and I
learned 2 things:
1. Hadley,
library(plyr)
ddply(data, .(V1), colwise(cl))
that is exactly what I was searching for.
2. Bert,
?tapply says that the first argument is an **atomic** vector. A
factor is
On Wed, Dec 10, 2008 at 6:39 PM, Bert Gunter gunter.ber...@gene.com wrote:
...?tapply says that the first argument is an **atomic** vector. A factor
is not an atomic vector. So tapply interprets it as such by looking only at
its representation, which is as integer values.
What is the
hi all,
I have a data frame such as:
1 blue 0.3
1 NA0.4
1 red NA
2 blue NA
2 green NA
2 blue NA
3 red 0.5
3 blue NA
3 NA1.1
I wish to find the last non-missing value in every 3ple: ie I want a 3
by 3 data.frame such as:
1 red 0.4
2 blue NA
3 blue 1.1
I have written a little
To: r-help@r-project.org
Subject: [R] repeated searching of no-missing values
hi all,
I have a data frame such as:
1 blue 0.3
1 NA0.4
1 red NA
2 blue NA
2 green NA
2 blue NA
3 red 0.5
3 blue NA
3 NA1.1
I wish to find the last non-missing value in every 3ple: ie I want a 3
by 3
On Wed, Dec 10, 2008 at 4:09 PM, Patrizio Frederic
[EMAIL PROTECTED] wrote:
hi all,
I have a data frame such as:
1 blue 0.3
1 NA0.4
1 red NA
2 blue NA
2 green NA
2 blue NA
3 red 0.5
3 blue NA
3 NA1.1
I wish to find the last non-missing value in every 3ple: ie I want a
graphics,statistical analysis etc. as well as programming. There are just
too many possible data structures to expect logical consistency in their
handling throughout (if one can even define what that means in specific
instances!).
I disagree with this claim: I think it is possible to create
] On
Behalf Of hadley wickham
Sent: Wednesday, December 10, 2008 3:52 PM
To: Bert Gunter
Cc: r-help@r-project.org
Subject: Re: [R] repeated searching of no-missing values
graphics,statistical analysis etc. as well as programming. There are just
too many possible data structures to expect logical
Perhaps... But plyr works only on **basic** data structures, and I referred
to all **possible** data strucures (deliberately); so I stand by my
statement and note that you did not contradict it.
To me the basic structures are vectors, matrices and arrays; lists;
and data frames (that these are
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