Displaying 20 results from an estimated 50000 matches similar to: "accessing list elements"
2012 Jun 22
4
Search list of elements for a specific pattern
Hi,
I have a list of mutations, called "mutList", of the form:
> head(mutList)
Alu
1 AluJ
2 AluJ/F(R)AM
3 AluJ/FLAM
4 AluJ/FRAM
5 AluJ/monomer
6 AluJb
It contains about 500 elements and not all of them contain the
sequence "Alu". I tried using this code:
Alu<-mutList[which(grep("Alu",mutList)==1)]
But that simply returned
2007 Feb 13
5
Fatigued R
Hi R,
Please solve my problem...........
I am extracting Bloomberg data from R, in a loop. R is getting fatigued
by doing this process and gives some errors. I introduced sleep
function. Doing this sometimes I get the results and sometimes not. I
even noticed that if I give complete rest for R (don't open R window)
for 1 day and then run my code with the sleep function, then the
2013 Apr 03
5
Can package plyr also calculate the mode?
I am trying to replicate the SAS proc univariate in R. I got most of the
stats I needed for a by grouping in a data frame using:
all1 <- ddply(all,"ACT_NAME", summarise, mean=mean(COUNTS), sd=sd(COUNTS),
q25=quantile(COUNTS,.25),median=quantile(COUNTS,.50),
q75=quantile(COUNTS,.75),
q90=quantile(COUNTS,.90), q95=quantile(COUNTS,.95),
q99=quantile(COUNTS,.99) )
2011 Jul 29
3
help with plot.rpart
? data=read.table("http://statcourse.com/research/boston.csv", , sep=",",
header = TRUE)
? library(rpart)
? fit=rpart (MV~ CRIM+ZN+INDUS+CHAS+NOX+RM+AGE+DIS+RAD+TAX+ PT+B+LSTAT)
Please: Show me the tree.
Mark
-------- Original Message --------
Subject: Re: [R] help with rpart
From: "Stephen Milborrow" <[1]milbo at sonic.net>
2012 Mar 07
1
a somewhat related cartoon
Quoting from today's PhD Comics, available at:
http://www.phdcomics.com/comics.php?f=1476
What the methodology section says: "Analysis was performed using a
commercially available software package."
What it really means: "I put the numbers into this magic box and out
came my thesis!"
--
Sarah Goslee
http://www.functionaldiversity.org
2012 Feb 02
4
an unusual use for R
I thought some of you might be amused by this.
In my non-work time, I'm an avid weaver and teacher of weaving. I'm
working on a project involving creating many detailed weaving
patterns, so I wrote R code to automate it.
Details here:
http://stringpage.com/blog/?p=822
If the overlap between R users and avid tablet weavers turns out to be
>> 1, I'll polish it up and turn it
2018 Mar 17
3
length of 'dimnames' [2] not equal to array extent- For Correlation Plot
Hi Sarah,
Thank you for your help.
I tried using CR1<-as.matrix(CR1) but gives error Error in corrplot(CR1,
method = "circle") : The matrix is not in [-1, 1]!. I am using a corrplot
library.
Please find the reproducible example:
dput(head(CR1,10))
structure(c(26L, 46L, 39L, 38L, 47L, 59L, 56L, 61L, 43L, 60L,
78L, 63L, 2L, 58L, 8L, 1L, 1L, 9L, 11L, 2L, 1037500L, 46747L,
346300L,
2011 Dec 01
2
Summarizing elements of a list
Hi everyone,
I looked around the list for a while but couldn't find a solution to my
problem. I am storing some results to a simulation in a list and for each
element i have two separate vectors(is that what they are called, correct my
vocab if necessary). See below
Version1_<-list()
for(i in 1:5){
Version1_[[i]]<-list(First=rnorm(1),Second=rnorm(1))
}
What I want is to put all
2010 Dec 13
3
curve
Hi All,
I generated 5000 samples using the following script
test<- rnorm(5000,1000,100)
test1 <- subset(test, subset=(test > 1100))
d <- density(test)
plot(d, main="Density of production")
abline(v=mean(test1)
I wanted to do the following but faced difficulties
1. to shade or color (blue) the curve using the criterion that any
2010 Apr 24
4
assign value between different type: Double vs Integer
Dear list,
just to put it in a simple way:
i read.csv from csv file to create a gdata
then, create array gdata34
however, when making a loop for assigning gdata34[1,m]<-gdata[m,4], this is what happen
gdata[1,4] 's real value is 10354, however, the gdata34[1,4] turns to be 883
then i checked the type: gdata[1,4] is integer, while gdata34[1,4] is double.
Can any one give me some help
2013 Sep 26
1
R not ploting lines in the correct order
Hi,
I have a set of x, y points where x represents dates and y actual values. I
am trying to plot a line graph of the data with points on top, but R is
connecting the wrong points with lines. Does anyone know how I can rectify
this. Please see sample below:
x=
24/09/2009 09:13 16/10/2009 11:17 24/10/2009 21:43 11/09/2009
18:34 22/08/2009
15:45 10/08/2009 00:30 14/08/2009 14:52 24/09/2009
2012 Mar 12
3
Finding the median
Hi just a quick question in which I must use the "function and return" part of R.
If I was asked to define a function called "median" where the function has a single argument x and returns the median value of a vector. How would I go about saying the median = element x in terms of n (say (n + 1)/2 or whatever it would be) if there is an even amount of elements, or x in terms
2012 Apr 05
4
Best way to search r- functions and mailing list?
R-helpers:
It looks like http://finzi.psych.upenn.edu/search.html has stopped
spidering the mailing lists -- this used to be my go-to site for
searching for R solutions. Are there any good replacements for this?
I want to be able to search both functions and mailing lists at the
same time. Cheers!
--j
--
Jonathan A. Greenberg, PhD
Assistant Professor
Department of Geography
University of
2011 Oct 20
3
Survival analysis
Hello,
I need some results from the survival analysis of my data
that I do not know whether exist in Survival Package or how to obtain if
they do:
1. The Mean survival time
2. The standard error of the mean
3. Point and 95% Lower & Upper Confidence Intervals estimates
Any help will be greatly appreciated.
Cem
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2013 Mar 25
3
About name of list elements
Hi folks,
I am starter for R. While I tried list as following:
> l <- list()
> l$foo
NULL
> l$foobar <- 1
> l$foo
[1] 1
Apparently, foo and foobar are different name for elements in list (actually
foo does not exist). But why they are sharing same value?
Thanks a lot!
Max
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2018 Mar 17
0
length of 'dimnames' [2] not equal to array extent- For Correlation Plot
That does clarify for me that you're missing a step: I didn't clearly
follow your description at first.
corrplot expects a correlation matrix, not your original data. You need to
use cor() first.
That's pretty clear in the documentation. See for instance the examples:
data(mtcars)
M <- cor(mtcars)
corrplot(M)
Sarah
On Sat, Mar 17, 2018 at 12:00 PM Shivi Bhatia <shivipmp82 at
2013 Mar 28
2
Can R read in .xyz files
Hi,
Can R read in .xyz files? If so, what is the package,
thanks
--
Shane
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2016 Apr 15
1
Decision Tree and Random Forrest
I need the output to have groups and the probability any given record in
that group then has of being in the response class. Just like my email in
the beginning i need the output that looks like if A and if B and if C then
%77 it will be D. The examples you provided are just simply not similar.
They are different and would take interpretation to get what i need.
On Apr 14, 2016 1:26 AM,
2011 Nov 29
2
format numbers without leading or trailing 0s
A simple question, but I can't find something to do what I want:
Given: a vector of numbers, like
lambda <- c(0, 0.005, 0.01, 0.02, 0.04, 0.08)
Desired: format them in minimal space for use as plot labels, ie,
without leading or tailing 0s. For this example:
lambdaf <- c("0", .005", ".01", ".02", ".04", ".08")
--
Michael
2011 Dec 01
3
vector
Hi.
Can you please answer to my questions about R ?
1.how can I write command for vector ?
for exaple in this sample :
I have this :
a1 <- c (1:10)
now how can I put in the vector ?
bye for now,
Thanks a lot.
Majid.
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