Dear r-help mailing list,
this seems stupid, but I actually don't find the solution:
if I have a vector of numbers x of length n, ranging, say, from -3 to 4, if I do
barplot (x)
all the values below 0 go downwards, and all the positive values go upward. How
can I make them all begin from the m
Hi,
I want to generate a number of vectors and store them with different names,
like this:
x=1
while (x<100)
{
vector#x# = rnorm(100)
x=x+1
}
where each vector has, at its hand, instead of #x# a number which goes from 1
to 99.
How can I do this?
Thanks
Gabriele Zoppoli, MD
Ph.D. F
for my naive definitions...) R that now all
of your values are numeric in a matrix? If you do as.numeric, everything
becomes a long column of n
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of
Genova, Genova, Italy
Guest Researcher, LMP, NCI, NIH
1-451-8575
Mobile: 301-204-5642
Email: zoppo...@mail.nih.gov
From: Ted Harding [ted.hard...@manchester.ac.uk]
Sent: Sunday, May 23, 2010 6:31 PM
To: Zoppoli, Gabriele (NIH/NCI) [G]
Cc: R help
Subject: RE: [R] "order" issue
On 23-May-10 21:39:06, Zo
negative number as smaller than positive ones...
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of
Genova, Genova, Italy
Guest Researcher, LMP, NCI, NIH, Bethesda MD
Work: 301-451-8575
Mobile: 301-204-5642
Email: zoppo...@mail.nih.gov
______________
326" "Breast"
38 "LE:MOLT_4" "-3.20055" "-1.72841" "Leukemia"
36 "LE:HL_60" "-3.16745" "-3.16745" "Leukemia"
54 "OV:OVCAR_4" "-3.13137" "-0.47497" "Ovaria
Hi everybody, this is a real dummy thing.
I sorted a matrix based on a given column, and what I get is right, until it
comes to columns of negative and positive values; than, "order" orders
everything from max to min in the negative values, and then AGAIN from max to
min in the positive values!
Hi,
when I try to import a microarray CEL batch, I get this error message:
> myAB <- ReadAffy ()
Error in .Call("read_abatch", filenames, rm.mask, rm.outliers, rm.extra, :
cannot allocate vector of length 1287151200
which, assuming the value is in bites, is below my RAM values (3 Gb recogni
Hi
I'm looking for a package to perform quality control, normalization and
analysis of high throughput cell-based chemical screens. I know that the
cellHTS2 package provides this for siRNA screens.
Does anybody know if something like what I'm looking for exists?
Thank you!
Gabriele Zoppoli,
Hi
how can I find, in a vector of characters, which is the most frequent one?
Thanks
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of
Genova, Genova, Italy
Guest Researcher, LMP, NCI, NIH, Bethesda MD
Work: 301-451-8575
Mobile: 301-204-5642
Em
Hi
I'm looking for a package to perform quality control, normalization and
analysis of high throughput cell-base chemical screens. I know that the
cellHTS2 package provides this for siRNA screens.
Does anybody know if something like what I'm looking for exists?
Thank you!
Gabriele Zoppoli,
Hi,
I need to export a rotating plot like the one generated from the following
function into a PPT slide or something that can be viewed by reviewers of a
journal:
library(np)
library(datasets)
data(faithful)
f <- npudens(~eruptions+waiting,data=faithful)
plot(f,view="rotate",neval=100
Hi,
I don't know to solve this error that is returned, even though I understand it:
library(plotrix)
Ymd.format<-"%Y/%m/%d"
gantt.info<-list(labels=
c("First task","Second task (1st part)","Third task (1st part)","Second task
(2nd part)","Third task (2nd part)",
"Fourt task","Fifth t
Please give me just a reference where I can find something useful.
In summary, I need to :
- find the median of each row of a matrix
- create a new matrix with each value in the first matrix divided by the median
of its row
- if a value "a" in the second matrix is < 1, I need to substitute it w
, LMP, NCI, NIH, Bethesda MD
Work: 301-451-8575
Mobile: 301-204-5642
Email: zoppo...@mail.nih.gov
From: jbreic...@gmail.com [jbreic...@gmail.com] On Behalf Of Jonathan
[jonsle...@gmail.com]
Sent: Friday, February 12, 2010 5:21 PM
To: Zoppoli, Gabriele (NI
Sorry, maybe it's easy but I haven't found anything useful:
how can I obtain a list C that contains all the members in the list B that are
not in list A? This are lists of nanes, not numbers!
Thank you
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, Univer
Hello,
here is the problem:
I want to demonstrate that, on average, the Pearson's correlations of a
specified subset of genes from a huge list (>18,000 columns) are higher than
any randomly chosen subset of that list. I would therefore like to do a number
of tests between that specified subset
Hello!
I have this problem: I want to create a Venn's diagram with three lists of
genes'names. The first is all the genome, the second a subset of it comprising
all mitochondrial genes, and the third including all genes that correlate with
a given gene.
This is what I do:
> library(gplots)
>
Hi all,
if I transpose a matrix with t(data), the newly created colums do not appear to
have the first row as header. How can I do to have all the newly created
columns have their first row as a header?
Thanks
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematolog
Hi,
I've lost my mind on it... I have to scatterplot two vectors, grouped by a
third variable, with two different dimensions according to whether each cell
line in the plot is sensitive or resistant to a given drug, and with a
different color for each of 9 tissues of origin.
Here's what I've
Hi,
I'm trying to create a frequency histogram for all the values in a table, but
when I try to do so, an error is returned, saying that I cannot create a
histogram with an obkect of that class. Here's what I do:
>library(lattice)
>table<-read.table("C:/.../table",header=TRUE,sep="\t")
>histog
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