Displaying 20 results from an estimated 3000 matches similar to: "vectorization with subset?"
2008 May 28
2
Unexpected behaviour in reading genomic coordinate files of R-2.7.0
Great R people,
I have noticed a strange behaviour in read.delim() and friends in the R
2.7.0 version. I will describe you the problem and also the solution I
already found, just to be sure it is an expected behaviour and also to
tell people, who may experience the same difficulty, a way to overcome it.
And also to see if it is a proper behaviour or maybe a correction is needed.
Here is the
2016 Apr 05
2
Is that an efficient way to find the overlapped , upstream and downstream ranges for a bunch of ranges
I do have a bunch of genes ( nearly ~50000) from the whole genome, which read in genomic ranges
A range(gene) can be seem as an observation has three columns chromosome, start and end, like that
seqnames start end width strand
gene1 chr1 1 5 5 +
gene2 chr1 10 15 6 +
gene3 chr1 12 17 6 +
gene4 chr1 20 25 6 +
gene5
2008 Jul 08
2
list genes w/n a genomic fragment
Hi, is there any package/function in Bioconductor that can do this: if given
the chromosome positions of a fragment, find out all genes within, and with
the information about which strand is the sense strand. And vice versa.
Thanks a lot.
-----
Appreciate your time & attention!
--
View this message in context: http://www.nabble.com/list-genes-w-n-a-genomic-fragment-tp18331452p18331452.html
2008 Jun 07
1
strange (to me) p-value distribution
I'm working with a genomic data-set with ~31k end-points and have
performed an F-test across 5 groups for each end-point. The QA
measurments on the individual micro-arrays all look good. One of the
first things I do in my work-flow is take a look at the p-valued
distribution. it is my understanding that, if the findings are due to
chance alone, the p-value distribution should be uniform. In
2010 Jul 01
5
ROC curve in R
Hi,
i have a fairly large amount of genomic data. I have created a dataframe
which has "Reference" as one column and "Variation" as another. I want to
plot a ROC curve based on these 2 columns. I have serached the R manual but
I could not understand. Can anybody help me with the R code for plotting ROC
curve.
Thnx
ashu6886
--
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2012 Dec 13
2
Position available University of Oxford UK
*Postdoctoral Researcher - Bioinformatics/Statistics
University of Oxford, UK
*An exciting opportunity has arisen for a Postdoctoral Researcher in
Bioinformatics/Statistics to join the Department of Oncology at the
University of Oxford. The postholder will work under the supervision of
Dr Francesca Buffa and Prof Adrian Harris, and will work closely with
staff in the Molecular Oncology
2014 May 22
1
citEntry handling of encoded URLs
The following citEntry includes a url with %3A and other encodings
citEntry(entry="article",
title = "Software for Computing and Annotating Genomic Ranges",
author = personList( as.person("Michael Lawrence" )),
year = 2013,
journal = "{PLoS} Computational Biology",
volume = "9",
issue =
2008 Dec 09
2
motif search
Hi,
I am very new to R and wanted to know if there is a package that, given
very long nucleotide sequences, searches and identifies short (7-10nt)
motifs.. I would like to look for enrichment of certain motifs in
genomic sequences.
I tried using MEME (not an R package, I know), but the online version
only allows sequences up to MAX 60000 nucleotides, and that's too short
for my needs..
2008 Dec 12
3
init script question
Hi all, is there a function (or variable) I can use in a custom init
script that identifies the init script name? i.e. I'm porting some
init scripts from gentoo, where the $SVCNAME variable identifies the
init script name within the script itself...
d
/*
Davide Cittaro
Cogentech - Consortium for Genomic Technologies
via adamello, 16
20139 Milano
Italy
tel.: +39(02)574303007
e-mail:
2011 Aug 19
1
how to merge distance data based on location
Hi all,
I have two data frames, two columns each, 1000s of rows. Each row
represents a segment of the genome where a deletion has occurred.
First column is start position of the deletion in genomic distance,
second is end position.
So, e.g., first 3 rows of data frame A is:
1003 1023
5932 6120
12348 12689
first 3 rows of data frame B is:
852 5305
1010 1015
8500 9500
10000 13000
I want to merge
2005 Dec 15
3
<no subject>
Dear all,
I am still fairly new to R and try to analyze large tables of data generated
from genomic experiment. Currently, I am trying to plot pair of experiments
coming from different file, trying to look at the behavior of individual
feature in pair of experiment.
My problem is that I have independent list from different source and I would
like to plot the pair of value using a common key. As
2012 Jun 07
1
select subrows based on a specific column in a matrix
Hi all,
I have a matrix with 10000 rows and 10 columns. The last columns contains another identifiers but the values are not uniques so that I want to generate another matrix with rows with unique values in the last column.
If I did
tmp<-unique(my_mat$col10)
this will give me 8560 unique entries so the ideal matrix will be 8560X10 columns now then.
I tried
sub_mat<-my_mat[tmp,]
but
2009 Feb 16
1
Help with rgl
Hi,
I don't know much about the RGL package, and I have read the
documentation and tried some parameters, with no luck... I would like
to generate a movie from a 3D object (code below), where the vortex A
is closer to the observer, and then the object rotates and the B
vortex gets closer. I would like to capture this movie to a file.
By the way, I am not being able to insert unicode text
2007 Mar 23
1
can't load just saved R object "ReadItem: unknown type 65"
I have run into a problem loading a just saved R object using R-devel. I
have been saving and loading this particular type of R object for a long
while and never ran into this problem. I save, then immediately reload
(to test save) and get "ReadItem: unnknown type 65".
This error is reproducible after logout from server and restart of emacs
and R.
Below is my output and
2007 Mar 23
1
can't load just saved R object "ReadItem: unknown type 65"
I have run into a problem loading a just saved R object using R-devel. I
have been saving and loading this particular type of R object for a long
while and never ran into this problem. I save, then immediately reload
(to test save) and get "ReadItem: unnknown type 65".
This error is reproducible after logout from server and restart of emacs
and R.
Below is my output and
2009 Mar 10
1
North Arrow (.png file) on a Map
Hi list.
I would like to know how do I insert a North arrow, stored as a png file in
my computer, in a map? I found lots of post asking similar things, one of
them mentioned the pixmap package. The map was done using map() and
shapefiles (the code is below). I’m using the pixmap () and addlogo()
functions. Well I can import the png with pixmap() function (I guess, once
there’s no error message),
2008 Nov 25
6
bioinformatics repository?
Hi all, I'm new to Centos, just moved here from Gentoo Linux.
I have to install a server for bioinformatics purposes and I see that
default yum repositories do not include any bioinformatics software
(i.e. ncbi-toolkit, blat, and others). I'm googling a bit but I can't
find a valuable solution: which is (or which are) the best repository
I should add to have a satisfying list
2007 Apr 03
1
which points within an ellipsoid? Sorting data in 3d
Hello,
in a three dimensional coordinate system, I'd like to find all my
experimental data points that fall within an ellipsoid around a fixed
coordinate. The fixed point is defined by (x.coord.point,
y.coord.point, z.coord.point). The coordinates of the ellipsoid are
given by the three vectors x,y,z.
In a previous version of my code, I simply used a box instead of an
ellipsoid to sort
2012 Jun 28
1
Merging listed dataset into one
Hello,
I'm wondering how I can merge two featuresets into one.
My dataset is two sets of microarray data and it looks like followings:
> rawData
$v1
TilingFeatureSet (storageMode: lockedEnvironment)
assayData: 2197815 features, 59 samples
element names: channel1, channel2
protocolData
rowNames: LT290677RU_D1_2011-02-16 LT286300LU_D1_2010-07-24 ...
LT003990RU_D1_2010-11-04 (59
2010 Aug 05
2
colour of label points on a boxplot
Hi all,
I have 6 datasets(dataframes Assem_ContigsLen7 through all_ContigsLen12)
containing 3 columns (contig_id, contig_length, read_count).
Each dataset is composed of 3 types of contigs (assemblies of genomic
fragments), 1- all Bacterial fragments, 2 - all Viral fragments, 3 -
mixed fragments.
I identified the type of contig through a merge with another table with
just contig_id and