Displaying 12 results from an estimated 12 matches for "norpois".
2012 Sep 24
4
serial subtraction within a vector
Hello,
I have a vector (numeric) v-> c(a,b,c,d,e) and I want to create the vector
n->c(b-a,c-b,d-c,e-d). How can I do that?
Thank you
Hermann
[[alternative HTML version deleted]]
2012 Sep 05
2
Installing lumi and hdrcde
...umi package that depends obviously on hdrcde that is not available for r
2.12.1. I did not find instructions to solve or circumvent this problem.
Installing hdrcde by hand did not work either. It was not detected by
> (.packages(all.available=TRUE))
if installed in the R library.
Thanks
Hermann Norpois
This was my try to install the lumi package:
> source ("http://bioconductur.org/biocLite.R")
Fehler in file(filenaReme, "r", encoding = encoding) :
kann Verbindung nicht öffnen
Zusätzlich: Warnmeldung:
In file(filename, "r", encoding = encoding) :
kann 'bi...
2013 Jan 03
5
count appearence of zero in a vector
Hello,
I wish to count how often zero (0) appears in the vector test.
test
[1] 1 1 1 1 1 1 2 1 1 1 0 2 0 1 1 0 0 0 1 1 1 0 1 2 1 1 1 1 1 1
I think of something like ...
> sapply (test, function (x) if (x==0 ...
... but actually I dont know how to carry on.
Could anybody give me a hint?
Thanks Hermann
[[alternative HTML version deleted]]
2013 Mar 29
3
From a vector with characters to binary information
Hello,
I would like to transform a character vector into a "binary" vector
("keine" and " " become 0 and the rest 1).
> dput (scm)
c("keine", " ", "keine", "Erstgradverw.", "Mutter", "Erstgradverw.",
"Erstgradverw.", "keine", " ", "Vater",
2012 Jul 17
1
problem with function
...# or
attr(mydata, 'fc') # it does not work if I include return fc or attr... in
my function neither
Then I can get access to newdata and on but not on fc or attr(mydata, 'fc').
Is there a possibility to use function and having access to attr AND
newdata?
Thanks
Sincerely
Hermann Norpois
[[alternative HTML version deleted]]
2012 Sep 15
2
qplot: plotting precipitation data
...), end = c(5291926L,
10988526L, 11768676L, 11841851L, 12268076L, 12277051L), peak = c(8L,
7L, 8L, 8L, 12L, 7L)), .Names = c("chrom", "start", "end", "peak"
), row.names = c(NA, -6L), class = "data.frame")
>
Thanks for some instructions.
Hermann Norpois
[[alternative HTML version deleted]]
2012 Sep 10
3
plot: x and y chromosomes are missing
Hello,
I have a list with gene names, fold changes (=expression level) and
chromosomes.
Names fold change chromosome
hz 1.5 2
If I plot fold change versus chromosome (or vice versa):
plot (ch, fc)
I see only the chromosomes with numbers but not those with letter (x and
y). What can I do?
A second question:
How can I add a single line in that plot at a certain
2013 Oct 03
1
prcomp - surprising structure
Hello,
I did a pca with over 200000 snps for 340 observations (ids). If I plot the
eigenvectors (called rotation in prcomp) 2,3 and 4 (e.g. plot
(rotation[,2]) I see a strange "column" in my data (see attachment). I
suggest it is an artefact (but of what?).
Suggestion:
I used prcomp this way: prcomp (mat), where mat is a matrix with the column
means already substracted followed by a
2013 Nov 08
2
making chains from pairs
Hello,
having a data frame like test with pairs of characters I would like to
create chains. For instance from the pairs A/B and B/I you get the vector A
B I. It is like jumping from one pair to the next related pair. So for my
example test you should get:
A B F G H I
C F I K
D L M N O P
> test
V1 V2
1 A B
2 A F
3 A G
4 A H
5 B F
6 B I
7 C F
8 C I
9 C K
10 D L
2012 Nov 05
2
fusion of overlapping intervals
Hello,
I have start and end coordinates from different experiments (DNase
hypersensitivity data) and now I would like to combine overlapping
intervals. For instance (see my test data below) (2) 30-52 and (3) 49-101
are combined to 30-101. But 49-101 and 70-103 would not be combined because
they are on different chromosomes (chr a and chr b).
Does anybody have an idea?
Thanks
Hermann
> df
2012 Nov 01
2
subset a defined row plus the aforegoing
Hello,
my data is sorted by start.ens (see below). And now I would like to extract
all rows (so called* defined row*s) with type==Expression - subset (df,
type==Expression) - and the aforegoing type==DNase HS (which is not
necessarly row n-1 - assumung that the defined row is n). I dont know how
to add this to my subset command.
Is that possible?
Thanks Hermann
> df
start.ens fc.trans
2013 Feb 19
1
make a list with names with s/lapply
Hello,
I open some files in a directory and get a list.
open.list <- sapply (namen, function (x) {file <- list.files (ddir,
pattern=x, full.names=TRUE) # namen is vector and each element detects a
special file to open
file <- read.table (file)
}
)
This list has no names. I would like to get a list with key/value