Displaying 20 results from an estimated 30000 matches similar to: "scanning data in R"
2013 Mar 11
2
vertical lines in R plot
Dear All,
May I seek your suggestion on a simple issue. I want to draw vertical lines
at some positions in the following R plot. To be more specific, I wish to
draw vertical lines at d=c(5.0,5.5,6) and they should go till
p=c(0.12,0.60,0.20) . I haven't found any way out, though made several
attempts. Please run the following commands first if you are interested in!
2012 Oct 23
1
Minimizing Computational Time
Dear R-users,
May I seek some suggestions from you. I have a long programme written in R
with several 'for' loops inside. I just want to get them out by any elegant
way (if there is!) to reduce the computational time of the main programme.
For instance, is there any smart way for the following programme that will
lessen time?
2012 Oct 02
3
Integration in R
Dear R-users,
I am facing problem with integrating in R a likelihood function which is a
function of four parameters. It's giving me the result at the end but
taking more than half an hour to run. I'm wondering is there any other
efficient way deal with. The following is my code. I am ready to provide
any other description of my function if you need to move forward.
2013 Jan 08
2
Integration in R
Hi R-users.
I'm having difficulty with an integration in R via
the package "cubature". I'm putting it with a simple example here. I wish
to integrate a function like:
f(x1,x2)=2/3*(x1+x2) in the interval 0<x1<x2<7. To be sure I tried it
by hand and got 114.33, but the following R code is giving me 102.6667.
2013 Jan 30
1
Percentages in bar plot
Dear R-users,
Though it's a silly thing to ask, but I'm not getting a way out. I wish to
find the percentage distribution for a data vector 'stop'. The coomand
below is giving the frequency distribution. May I know the option to see
the percentages instead of frequencies. Similarly, what option I should
put in a histogram plot to see the percentages instead of frequencies?
2012 Oct 14
1
PFIM 3.2
Dear R-user,
I'm having some difficulty with working PFIM 3.2, a package for
implementing population PK/PD in R. I wish to evaluate the determinant of
Fisher information matrix each time with successive dose from a pre defined
sequence of doses and want to store those values in a vector. It's
important to note that in my 'stdin.r' file, dose<-c(u) and each time u is
to be
2013 Oct 11
3
matrix values linked to vector index
Hi,
In the example you showed:
m1<- matrix(0,length(vec),max(vec))
1*!upper.tri(m1)
#or
?m1[!upper.tri(m1)] <-? rep(rep(1,length(vec)),vec)
#But, in a case like below, perhaps:
vec1<- c(3,4,5)
?m2<- matrix(0,length(vec1),max(vec1))
?indx <- cbind(rep(seq_along(vec1),vec1),unlist(tapply(vec1,list(vec1),FUN=seq),use.names=FALSE))
m2[indx]<- 1
?m2
#???? [,1] [,2] [,3] [,4] [,5]
2011 Jun 03
2
Arules: R Crashes when running eclat with tidLists=TRUE
Hello,
I'm using the eclat function of the arules package (1.0-6) for the
identification of frequent itemsets. I need the tidLists, but if I set
in the function tidLists=TRUE R crashes (Windows XP Professional SP3,
32 bit, R version 2.12.1 (2010-12-16), reproducible on two different
computers) with two different error messages or non at all. Minimum
examples are:
library(arules)
2010 Aug 24
3
multiple assignments ?
Simple one, have read and googled, still no luck!
I want to create several empty vectors all of the same length.
I would like multiple empty vectors (vec1, vec2, vec3) and want to create them all in one line.
I've tried
vec1,vec2,vec3 <- vector(length=5)
and
c(vec1,vec2,vec3) <- vector(length=5)
and several other attempts but nothing seems to work ... suggestions?
Thanks
Jim
2002 Jun 18
5
insert number in vector
Hello R-users,
I need to create a vector inserting an 1 after each value of another vector.
For example:
vec1<-c(2,3,4)
I need to create a vector with the values 2,1,3,1,4
Does anyone know how create this vector without loops (vec1 could have 1000
elements)
Thank you,
Juan
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r-help mailing list -- Read
2010 Jul 12
2
findInterval and data resolution
Hello Wise Ones...
I need a clever way around a problem with findInterval. Consider:
vec1 <- 1:10
vec2 <- seq(1, 10, by = 0.1)
x1 <- c(2:3)
a1 <- findInterval(x1, vec1); a1 # example 1
a2 <- findInterval(x1, vec2); a2 # example 2
In the problem I'm working on, vec* may be either integer or numeric, like
vec1 and vec2. I need to remove one or more sections of this vector;
2006 Feb 13
2
?bug? strange factors produced by chron
Hallo all
Please help me. I am lost and do not know what is the problem. I have
a factor called kvartaly.
> attributes(kvartaly)
$levels
[1] "1Q.04" "2Q.04" "3Q.04" "4Q.04" "1Q.05" "2Q.05" "3Q.05" "4Q.05"
$class
[1] "factor"
> mode(kvartaly)
[1] "numeric"
> str(kvartaly)
Factor w/ 8
2013 Jun 18
1
transform 3 numeric vectors empty of 0/1
Dear all,
Without a loop, I would like transform 3 numeric vectors empty of 0/1 of
same length
Vec1 : transform 1 to A and 0 to ""
Vec2 : transform 1 to B and 0 to ""
Vec3 : transform 1 to C and 0 to ""
to obtain only 1 vector Vec who is the paste of the 3 vectors (Ex : ABC,
BC, AC, AB,...)
Any idea ?
Thank you for your help
--
Michel ARNAUD
2009 Aug 28
1
problems with strsplit using a split of ' \\\ ' : a regex problem
I have a vector of gene symbols, some of which have multiple aliases. In the
case of an alias, they are separated by ' \\\ '.
Here is a real world example, which would represent one element of my
vector:
Eif4g2 /// Eif4g2-ps1 /// LOC678831
What I would like to do is input the vector into a function and output a
vector with just the first alias of each element (or, if there are no
aliases,
2009 Jun 22
2
Help on creating a sequence of vectors
I want to create a number of vectors like :
vec1 <- rnorm(1)
vec2 <- rnorm(2)
vec3 <- rnorm(3)
and so on...........
Here I tried following :
for (i in 1:10) paste("vec", i, sep="") <- rnorm(i)
However obviously that is not working. Here vectors I need to be seperated
i.e I do not want to create a "list". How to modify above code?
--
View this
2008 Oct 20
2
R Newbie Question
Hello list,
I just started R today and tried something quite simple. I wanted to
create a colored plot and eventually after hours of fiddling around got
it working. However, my solution seems very suboptimal and I'd really
appreciate your hints on how to improve. I believe that R already offers
many functions I coded (e.g. distance between two vectors, vector
length, vector normalization and
2008 Aug 29
1
scan after seek in text files (PR#12640)
Full_Name: Dr. Alex Sheppard
Version: 2.7.1
OS: Linux Debian Lenny
Submission from: (NULL) (79.73.224.62)
After scanning from an open (text) connection, then seeking, then scanning
again, the second scan returns incorrect result. It looks like the first byte
scanned was from the pre-seek file position, then it continues to read from the
post-seek file position.
To reproduce:
#Put 3x3 matrix
2011 Feb 18
4
Recommendation for a Good Vulnerability Scanning Service?
Hi,
Can someone recommend a good vulnerability scanning service? I just
need the minimum for PCI compliance (it's a sort of credit card
processing certification).
I got a free scan from https://www.hackerguardian.com/ and their scan
reported a number of "Fail" results. I haven't checked them all yet
but most seem to be things for which fixes were backported looong ago
by The
1999 Dec 16
2
R question
I have the following question, which is elementary but I am unable to
answer.
In a for(i=10) loop, I am trying to represent the 10 1-dimensional vectors
l1, l2,... l10 by some expression that will run through these values.
ie. soppose I want to add l1 + ... + l10
I could go
x <- 0
for(i in 1:10){ x <- x+ l(i)}
This should return x to be the sum of the 10 li's for i from 1 to 10
2013 Jun 03
2
delete active dataset
Hi All, whenever I open R using the shortcut on desktop, there are 2 active
datasets in the workspace, I tried to start the program from Start menu,
same thing!! How can I delete these two active datasets and make sure
whenever I restart the program, they wont appear?
Thanks!
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