Displaying 20 results from an estimated 4000 matches similar to: "Rotate basic plot (scatter) in R"
2008 Nov 25
2
invoking user-defined function
Dear list,
Can somebody tell me how to invoke user-defined functions from script
files during run-time?
Basically I have (almost) one function per script file.
I am thinking of something like
#include in C++
import in Java/Python
use in Perl
No, I don't need my functions every time R is started.
Neither I am thinking about writing building my functions into
packages.
I just
2008 Jul 30
2
Bizarre - R crashes on merge
Hi all,
I have a large data.frame, 1530 observation with 6 columns. I want to
merge a 7th column, a transformation of the response variable (hospital
admissions), namely
trans<-sqrt(copd$admissions+0.25)
trans<-data.frame(trans)
And now when I do
copd2<-merge(copd,trans)
(copd being my original data.frame), R either crashes or is taking an
extremely long time to do the computation. I
2009 Feb 20
2
change attributes of all data.frame elements
Hi,
I was wondering whether there was an easy way to change the attributes
of all elements in a data.frame (rather than looping through elements)?
Specifically, I would like to set the "dim" attributes to NULL
Thanks for any help,
Jarrod
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Scotland, with registration number SC005336.
2008 Nov 05
3
Efficient way to fill a matrix
Dear R experts,
Suppose I have a data frame of three variables:
> foo <- data.frame(row=1:5, col=1:3, val=rnorm(15))
> foo
row col val
1 1 1 -1.00631642
2 2 2 0.77715344
3 3 3 0.17358793
4 4 1 -1.67226988
5 5 2 1.08218836
6 1 3 1.32961329
7 2 1 -0.51186267
8 3 2 -1.20990127
9 4 3 -0.57786899
10 5 1 0.67102887
11 1 2
2007 Oct 17
2
power law fit with unknown zero
Dear R-helpers
I would like to do a fit of the form: y = a (x+c)**b, where a, b and c
are unknown.
Does anybody know how to do it?
Thanks
Thomas
2008 May 28
1
Can plot() be used for multiple plots?
Greetings helpRs --
I would like to use plot() to plot two cumulative distribution curves so
that a user of the plot can compare the distributions of the two
variables. The following code draws two distributions separately, but I
cannot find the instruction necessary to add a second cumulative
distribution to the first one.
Any suggestion would be very welcome.
x1 <-
2008 Apr 07
1
Width of text displayed in R
All,
I think this is pretty basic but I couldn't find the answer in any
source.
I have just built my own R for Linux (amd 64). It runs well, but R
thinks that it only has 80 characters or so of screen width. I log on
with Putty to the box and can stretch it as large as I want.
Is there a simple way to tell R to use more screen width when
displaying?
From whatami:
OS RELEASE :
2008 Apr 09
1
read table not reading lines containing single quotes
Hi,
* I am using read.table command as follow
kegg<-read.table("c:/IDs.tab",header =TRUE,quote= "'", sep="\t") *
Fragment of file is as follow:
ID Pathway
04916 Melanogenesis
04920 Adipocytokine signaling pathway
04930 Type II diabetes mellitus
04940 Type I diabetes mellitus
04950 Maturity onset diabetes of the young
05010
2008 Apr 25
3
How to overlap two density plots?
Hi,
How can I overlap two density plots?
A <- c(8,10,10,11,11,11,12,12,12,12,11,11,11,10,10,7)
B <- c(11,13,13,14,14,14,15,15,15,15,14,14,14,13,13,10)
plot(density(A))
plot(density(B))
Regards,
Emre
P.S. There's a overlap.density function in package DAAG
Is there another way to do this?
--
---
Emre ÜNAL
http://www.geocities.com/dusemre
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2008 Apr 07
2
read.table with multiple header lines
Hello,
I have difficulties in reading in a text file with multiple (=2) header lines. My table looks like this:
id code gr grcode AA AB AC AD
time 30 40 50 60
1 1234 1 c 0 1 0 0
2 1346 1 c 0 0 0 1
3 1456 1 c 0 0 1 1
4 1893 1 c 0 0 1 1
Can someone help me out?
Thanks
Deborah
--
2008 May 31
2
How to identify overlapped items from two list and plot them?
Hi list,
I have a question on how to identify the overlapped items from two vectors:
>x<-c(0,1,2)
>y<-c(1,2,2,3)
and plot the number of the overlapped as well as non-overlapped in a
diagram?
Thanks much,
Allen
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2008 Apr 28
3
data.frame indexing
Dear R Community, A simple problem (for some of you): I wish to index a
data.frame by all elements NOT in my index
E.g.:
> a<-as.data.frame(matrix(rnorm(100),nrow=10,ncol=10))
> b<-which(a$V1>0.8)
> b
[1] 1 4 6 10
> a_indexb<-a[b,]
> a_notIndexB<-a[!b,]
> nrow(a_notIndexB)
[1] 0
Indexing a on b is not a problem (a_indexb), but how can do get only the
2008 May 09
1
data management question
Hi all,
I have a data management question. I am using an panel dataset read into
R as a dataframe, call it "ex". The variables in "ex" are: id year x
id: a character string which identifies the unit
year: identifies the time period
x: the variable of interest (which might contain NAs).
Here is an example:
> id <- rep(c("A","B","C"),2)
2008 Jun 19
4
Any simple way to subset a vector of strings that do contain a particular substring ?
For example,
strings <- c("aaaa", "bbbb","ccba").
How to get "aaaa", "bbbb" that do not contain "ba" ?
_________________________________________________________________
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2008 Jul 08
2
How to change labels in a histogram
Hi everyone
I am trying to add a percent sign to my labels in a hist() plot. "labels =
TRUE" gives me the values, but I don't know how to add the percent sign. I
would prefer to annote the plot after drawing it, e.g. using text(), but
don't know how to address the positions in a standard histogram. A lattice
approach would work too.
Best regards,
LY
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2008 Aug 21
2
skipping values when reading binary files
Hi,
I would like to skip a preset number of values when reading in a binary file
(readBin). Is there any way to do this?
kind regards,
and thanks in advance for the help.
Pieter Beck
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2008 Sep 19
1
frequency table across multiple variables
Dear R users,
I have a dataframe like this:
x1<-c(1,2,3,4,NA ,NA ,NA, 3, 1, 1, 1, 1, 2, 2, 3, 4, 4)
x2<-c(2,3,4,3,4,3,4,2,2,3,4,NA,NA,NA,NA,4,3)
x3<-c(1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,1,2)
m<-data.frame(x1,x2,x3)
I would like to create a frequency table like this:
x1 x2 x3
NA
1
2
3
4
where the values in each cell would be the count of the value for that
variable.
How can I do
2008 Nov 16
1
Expanding data ...
Hello,
I have a dataset that has counts, but I need to expand the dataset so
that each of the counts has its own line in the dataset (row) and is
given and id. It looks something like:
Site Type Cnt
1 "A" 3
1 "B" 0
2 "C" 2
I want the dataset to look like:
Site Type ID
1 "A" 1
1 "A" 2
1 "A" 3
1 "B" 0
2 "C" 1
2
2008 Nov 16
1
Changing values (factors) does not change levels of that value?!
Hello,
* I read in a server weblog with read.table.
-> OK.
* I look for the downloaded-size-values (filesize of the download)
-> OK
* I found "-" and wanted to substitute them with "0" and
used: weblog$V8[ weblog$V8 == "-" ] <- 0
-> OK
* checked the contents on "-" vs. "0" and found all "-" substituted by
2008 Dec 02
1
simultaneous plots
Is there a good and concise way of making simultaneous plots that are
identical, but directed to different devices?
I'm writing an R-script that produces a pdf file. I would really like to
check visually whether the pdf file shows what I expect. So I would like the
same commands to produce a plot on screen. At the moment I'm using
cut-and-paste, which is not ideal because any corrections