The caret package (short for Classification And REgression
Training) attempts to streamline the process for creating
predictive models. The package contains tools for:
- data splitting
- pre-processing
- feature selection
- model tuning using resampling (with parallel processing)
- variable i
Dear Sir
Many papers calculated the p value of trends for odds ratios of ordered
category variables. I have found the tabodds command in Stata. But how to
do it in R?
Thanks
*Yao Zhu*
*Department of UrologyFudan University Shanghai Cancer CenterShanghai,
China*
[[alternative HTML versio
Dear listserv,
I don't know if this question is more appropriate for the Bioconductor listserv
or the general R listserv. I am asking it here because I believe this problem
can be solved using regular R commands in the base package. I suspect you all
will be very helpful.
I have genetic sequen
It would help to know the sizes of the objects that have in your
workspace and also provide the 10 prior lines of your script at the
point of the error so that we can see what you are trying to do. The
following commands will list out the sizes of the objects:
cbind(sapply(ls(), function(x){
Hi,
Looking to see how to unstack a dataframe using RCommander. The dataset I'm
using is:
http://www.sagepub.com/dsur/study/DSUR%20Data%20Files/Chapter%209/SpiderLong.dat
I want to use RCommander to change it to this form:
http://www.sagepub.com/dsur/study/DSUR%20Data%20Files/Chapter%209/Spider
See in-line below.
cheers,
Rolf Turner
On 04/01/14 12:48, Stefan Mühlbauer wrote:
Hello!
Â
I am having two variables x and y (whereas y is a set of raster images) and
want to
quantify the correlation between x and y by calculating the Pearson
Correlation Coefficient. In order
Hello!
Â
I am having two variables x and y (whereas y is a set of raster images) and
want to
quantify the correlation between x and y by calculating the Pearson
Correlation Coefficient. In order to ensure how signficant the correlation
results are, I am interested in getting the p-value (<0.1) fo
Ah, ok, thank you for explanations!
Dmitry
On 03/01/2014 20:00, Bert Gunter wrote:
You misunderstand = I was not sufficiently clear.
What is false is your statement that "you **need** to attach the data
file before sorting." You do not. with()/within() can be used to avoid
using the fully qual
Hi again and thank you all for the answers
i need to add that im a relatively R neewb so i apologize in advance
i started R with the --vanilla option and ran gc()
this is the output i get:
> gc()
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 182236 9.8 407500 21.8 35 18.7
V
[Not sure if I should post this here, or on a another list, but will try
here first...]
For a book I'm writing using knitr .Rnw files, I would like to use
\code{} to mark
*all* R code, without having to escape special characters that appear in R
names, formulas, etc.
In the past, I've use the
On Jan 3, 2014, at 6:45 AM, Vittorio Colagrande wrote:
> Dear R-group
>
>
>
> I can not install the package LaplacesDemon in version 3.0.2 of R.
>
> I ask whether it is possible or, alternatively, signs for a equivalent
> package.
>
>
>
> Thanks you and best regards.
>
> Vittorio Colagra
You misunderstand = I was not sufficiently clear.
What is false is your statement that "you **need** to attach the data
file before sorting." You do not. with()/within() can be used to avoid
using the fully qualified names without attaching. I did not claim
that attaching first would not work, onl
Bert, why do you think that "attach" is not working in this case? Did
you check it before your advice? :)
I agree about "generally bad approach", but it is quite convenient for
work with one data set.
Dmitry
On 03/01/2014 18:28, Bert Gunter wrote:
Inline
Bert Gunter
Genentech Nonclinical Bio
Dear R-users,
I'm struggling with APA formatted two way BAR-charts according to apa-style
i should have the legend in the background of my plot (so above the bars and
not beside the picture/plot itself) and the background should be completely
white without gridlines or what so ever. Could any one
Hi
I have a factor in two
level and a continues variable nested in one of the factor A levels. Does it
nested ancova model? Please guide me
Regards,
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list
https://stat.ethz.ch/ma
Inline
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch
On Fri, Jan 3, 2014 at 7:08 AM, Dmitry Pavlyuk
wrote:
> Hi Sofia!
>
> You need to attach the data file before
Dear all,
I have a big problem with R. I want to make a multitaper power spectrum
analysis of a time series using 3 tapers and a resolution of two years with
robust background noise estimation. I try different packages but
unsuccessful.
library(multitaper)
d<-spec.mtm(CAMstd, nw=2, k=3,deltat=1/
Hi Sofia!
You need to attach the data file before sorting:
attach(df_final)
or just use full qualified names (like df_final$Y_init)
Dmitry
On 03/01/2014 16:41, Stefano Sofia wrote:
> Dear R users,
> I have two files of seasonal rainfall data (more than 10,000 rows each); here
> the first 8 ro
Hello, Colleges!
I'm having a problem with illustration of linear transformation of
multivariate gaussian RV using R.
According to the theory, if X ~ N(0, I), then CX ~ N(0,CC').
But the code below doesn't illustrate this. Please could you help me to
find a mistake
require(tmvtnorm)
C = mat
On Fri, Jan 3, 2014 at 9:41 AM, Stefano Sofia
wrote:
>
> Dear R users,
> I have two files of seasonal rainfall data (more than 10,000 rows each); here
> the first 8 rows of each file are reported.
>
> Code_Raingouge,Y_init,M_init,D_init,h_init,m_init,Y_fin,M_fin,D_fin,h_fin,m_fin,Rainfall,N_Value
Dear R-group
I can not install the package LaplacesDemon in version 3.0.2 of R.
I ask whether it is possible or, alternatively, signs for a equivalent package.
Thanks you and best regards.
Vittorio Colagrande
[[alternative HTML version deleted]]
__
Dear R users,
I have two files of seasonal rainfall data (more than 10,000 rows each); here
the first 8 rows of each file are reported.
Code_Raingouge,Y_init,M_init,D_init,h_init,m_init,Y_fin,M_fin,D_fin,h_fin,m_fin,Rainfall,N_Values,Quality_Level,Code_Station
2000,1952,12,1,0,0,1953,3,1,0,0,307
Thanks !!
Best regards
...
Tanvir Ahamed
Göteborg, Sweden
From: Rui Barradas
-h...@r-project.org>
Sent: Friday, 3 January 2014, 10:58
Subject: Re: [R] Select rows of a data frame according to values of vector in a
list
Hello,
T
Hello,
Try the following.
lapply(lis, function(i) df[i, ])
Hope this helps,
Rui Barradas
Em 03-01-2014 09:04, Mohammad Tanvir Ahamed escreveu:
Hi there !!
I have a list like as follows :
lis
$lis1
[1] 1 3 5
$lis2
[1] 2 4 6 8 9
I have another data frame like as follows
df
1 10 110
2 1
Hi there !!
I have a list like as follows :
>lis
$lis1
[1] 1 3 5
$lis2
[1] 2 4 6 8 9
I have another data frame like as follows
>df
1 10 110
2 15 120
3 20 130
4 25 140
5 30 150
6 35 160
7 40 150
8 45 180
9 50 190
Now i want to select the rows of data frame by the value of list and the output
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