Diego:
Nonsense! Look at the results of your code -- you have failed to order
the results as had been requested by the OP. It's also unnecessarily
complicated. The following suffices (where I have used regular
expressions rather substring() to get the numeric part of the strings
-- **assuming**
Bogdan,
Follow my suggestion.
letter - substring(A, 1, 1)
number - substring(A, 2, nchar(A))
new.data - paste0(letter, formatC(as.numeric(number), width = 2, flag =
0))
Em 20/06/2015 21:21, Bogdan Tanasa tan...@gmail.com escreveu:
Dear all,
I am looking for a suggestion please regarding
Hello,
I am running a BFGS using optimx and would like to obtain the Hessian for the
last iteration.
How can I go about this?
Thank you
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I an not aware of any function or package named qcomhd in base R or in the CRAN
contributed packages, nor did it turn up when I went searching for it there, so
your failure to access it seems unsurprising.
Google does find some references to a Github package called WRS that supposedly
contains
Thank you all again. It works with :
library(gtools)
dat[mixedorder(A),]
considering :
A = c(A1,A10,A11,A2)
B = c(1,2,3,4)
dat = data.frame(A,B
On Sun, Jun 21, 2015 at 10:52 AM, Bert Gunter bgunter.4...@gmail.com
wrote:
Diego:
Nonsense! Look at the results of your code -- you have failed
Ramiro,
`dt[, lapply(.SD, mean), by=name]` is the idiomatic way.
I suggest reading through the new HTML vignettes at
https://github.com/Rdatatable/data.table/wiki/Getting-started
Ista, thanks for linking to the new vignette.
On Wed, Jun 10, 2015 at 2:17 AM, Ista Zahn istaz...@gmail.com wrote:
Hi, list experts
I am totally a new user of the R package. I just tried to use qcomhd, but
it gives me an error alarm, as below.
qcomhd(RT1, RT2, q = seq(.1, .9, by=.1))
Error: could not find function qcomhd
Then I try to install it, however, it seems that I am not able to install
it. Also, in
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