Displaying 20 results from an estimated 3000 matches similar to: "help with matrix column cleaning"
2012 Feb 27
1
win zip archive of library(HH) for R2.12.0
Dear R Group
Can any body point me to a link from where I can get zip archive of the
package HH for R 2.12.0?
Thanks &
Regards
Vijayan Padmanabhan
"What is expressed without proof can be denied without proof" - Euclide.
Please visit us at www.itcportal.com
******************************************************************************
This Communication is for the exclusive use
2012 Nov 15
3
GUI Development reg
Dear R Group
I have a character vector from which I want to select a few elements and
create a new character vector.
I need a GUI to do this in R Script.
Can someone help?
a<-c("A","B","C","D","E")
## I want to have a GUI in R that will display elements in "object a" as
a drop down list.. from there I want to be able to select a
2010 Sep 22
2
randomForest - partialPlot - Reg
Dear R Group
I had an observation that in some cases, when I use the randomForest model
to create partialPlot in R using the package "randomForest"
the y-axis displays values that are more than -1!
It is a classification problem that i was trying to address.
Any insights as to how the y axis can display value more than -1 for some
variables?
Am i missing something!
Thanks
Regards
2010 Sep 07
1
Help with repeating values in a column of dataframe in R on a random pattern- reg
Dear Group
I have to populate a column in a R dataframe containing say 99 rows, where
for every 3 row one row (randomly determined) of the column should take
the value 1 and the other 2 row of that column should take the value 0.
I used the command
dataframe$new<-rep(sample(c(0,1,0),3,replace=FALSE),99)
This command repeats the same patter of response across the entire
column..
I would
2010 May 17
1
Query on linear mixed model
Hi R Forum
I am a newbie to R and I have been amazed by what
I can get my team to accomplish just by
implementing Scripting routines of R in all my
team's areas of interest..
Recently i have been trying to adopt R scripting
routine for some analysis with longitudanal data..
I am presenting my R script below that I have
tried to make to automate data analysis for
longitudanal data by employing
2011 May 26
1
dataframe - column value calculation in R
Dear RGroup
I have a requirement for which I am seeking help.
I am looking at automating the last column calculation through R when
having the data of the other columns as a dataframe, In excel I can do
using the formula function as given below, however, hereagain for the
number of observations that come under control, I need to write the
formula seperately for each cell and then I can block
2010 Sep 09
0
Help with HB analysis in R for a conjoint study Data
Dear Group
I was referring to a conjoint analysis scenario using R from the paper
referred below:
Agricultural Information Research 17(2),2008,86-94
available online at www.jstage.jst.go.jp/
This paper describes the data modelling of a conjoint study design based
on conditional logit procedure.
I understand that Heirarchical Bayes is asymptotically equivalent to
Conditionallogit. However it
2011 Apr 07
0
Hypercluster Finder Function in R
Dear R Users
I am looking at carrying out Multivariate Supervised Discretization on a
set of continuous attributes to determine cut off values on each attribute
which would allow best explanation of a binary outcome variable.
I understand that there is an algorithm for doing this (The HyperCluster
Finder Algorithm from the paper -Muhlenbach F., & Rakotomalala R. (2002).
Multivariate
2012 Feb 27
0
Suggestion on Model Def - reg in nlme
Dear RGroup
I have a data of the type shown below:
I am trying to use lme function followed by post hoc test as given in the
code below.
Am I right in my model definition, given the problem data structure.
in the example, i have used column names of my data frame so that it is
self explanatory.
library(reshape)
library(nlme)
library(multcomp)
2012 Feb 21
0
add.cross.strata.test function query
Dear R Group
in package Deducer, how should i use the
add.cross.strata.test() function to pass the chi.squared.test function as
htest argument?
##########Example###########
library(Deducer)
dat<-data.frame(a=rnorm(100)>.5,b=rnorm(100)>0,c=rnorm(100)>(-.5))
tables<-contingency.tables(
row.vars=a,
col.vars=b,
stratum.var=c,data=dat)
2011 Jun 09
1
lattice plot query
Dear R Group
I have the following data for which I am trying to create subject wise
lattice plot for a given attribute and product .
though the lattice plot is generated, for some reasons that i dont
understand in each plot the subject panels take a random order, I would
rather want all the plots to display the subject order in the same order
as how i have ordered this particular factor level.
2017 Jul 13
2
Help with R script
Using Ulrik?s example data (and assuming I understand what is wanted), here is what I would do:
ex.dat <- c("FName: fname1", "Fval: Fval1.name1", "Fval: ", "FName: fname2", "Fval: Fval2.name2", "FName: fname3")
tst <- data.frame(x = ex.dat, stringsAsFactors=FALSE)
sp <- strsplit(tst$x, ':', fixed=TRUE)
chk <-
2017 Jul 14
0
Help with R script
@Don your solution does not solve Vijayan's scenario 2. I used spread and
gather for that.
An alternative solution to insert mising Fval - picking up with Don's
newtst - is
newtst <- c("FName: fname1", "Fval: Fval1.name1", "FName: fname2", "Fval:
Fval2.name2", "FName: fname3", "FName: fname4", "Fval: fval4.fname4")
2017 Jul 13
0
Help with R script
Hi Vijayan,
one way going about it *could* be this:
library(dplyr)
library(tidyr)
library(purrr)
ex_dat <- c("FName: fname1", "Fval: Fval1.name1", "Fval: ", "FName:
fname2", "Fval: Fval2.name2", "FName: fname3")
data.frame(x = ex_dat) %>%
separate(x, c("F1", "F2"), sep = ": ") %>%
filter(F2
2011 Jun 18
3
how to subtract one string from another in R
Dear R Group
Here is what i am trying to do.. but couldnt figure out how..
string<-"ABC DEFG HIJKLM NOPQ RSTUV WXY"
string1<-substr(string,1,4)
I want to create an R object string 2 ( following the logic shown).. R does
not allow string subtraction.. any suggestions how to achieve this?
string2<-string-string1 (it should now hold "DEFG HIJKLM NOPQ RSTUV WXY"
I
2011 Apr 10
4
Password-protect R script files
There was a question in R forum very long time back.. on how to protect R
Script files from inadvertent editing by users.
There is a way to do this from within R, atleast in Windows XP I have tried
this and it certainly works , The method is very different from the OS
based folder protection route, however making available such a method in
the open forum would only kill the very spirit of R.
2011 Aug 04
2
random value generation with added constraint.
Hi
I am looking at generating a random dataset of say 100 values fitting in a
normal distribution of a given mean and SD, I am aware of rnorm
function. However i am trying to build into this function one added
constraint that all the random value generated should also obey the
constraint that they only take values between say X to X+25
How do i do this in R?
Any help would be highly appreciated,.
2017 Jul 13
2
Help with R script
Dear R-help Group
Scenario 1:
I have a text file running to 1000 of lines...that
is like as follows:
[922] "FieldName: Wk3PackSubMonth"
[923] "FieldValue: Apr"
[924] "FieldName: Wk3PackSubYear"
[925] "FieldValue: 2017"
[926] "FieldName: Wk3Code1"
[927] "FieldValue: "
[928] "FieldValue: K4"
[929] "FieldName:
2011 Apr 02
4
help
Dear R Help group
I need to run a command line script from within R session. I am not clear
how i can acheive this. I tried shell and system function, but i am missing
something critical.can someone provide help?
My intention is to create a pdf file of a plot in R and then attach
existing files from my system as attachment into the newly created pdf file.
Any help would be greatly appreciated..
2011 Jan 16
3
transform a df with a condition
Dear all,
for each A == 3 in 'df' I would like to change the variables B and K.
My result should be the whole df and not the subset (A==3)...
df <- data.frame(A = c(1,1,3,2,2,3,3),
B = c(2,1,1,2,7,8,7),
K = c("a.1", "d.2", "f.3",
"a.1", "k.4", "f.9",