Displaying 20 results from an estimated 200 matches similar to: "Problem with lsa package (data.frame) on Windows XP"
2006 Oct 03
1
new to R: don't understand errors
Hello all,
I'm brand new to the use of R, and I'm trying to quickly learning the
rudiments for a couple of projects here at work. I'm working with the
lsa package and trying to generate various semantic spaces. I seem to do
well with small collections of clean text files, but now that I am
trying to work with larger collections of less than perfection files,
I'm getting errors
2007 Aug 21
2
Partial comparison in string vector
Hi list members
I have a vector of strings
x=c("w","ex","ee")
And I want to get a logical vector showing the positions where my search
string "e" matches the elements partially, i.e. is at least the left-hand
part of the target strings, i.e. I want to get a vector FALSE TRUE TRUE.
Any ideas?
Thanks
Steve Powell
proMENTE social research
research |
2012 Jan 13
4
Troubles with stemming (tm + Snowball packages) under MacOS
Dear all,
I have some troubles using the stemming algorithm provided by the tm
(text mining) + Snowball packages.
Here is my config:
MacOS 10.5
R 2.12.0 / R 2.13.1 / R 2.14.1 (I have tried several versions)
I have installed all the needed packages (tm, rJava, rWeka, Snowball)
+ dependencies. I have desactivated AWT (like written in
2010 Mar 31
1
tm package- remove stowords failling
Hi,
I just noticed that by inspecting the matrix term that no all stopwords are
removed, does someone know how to fix that?
library(tm)
data("crude")
d<-tm_map(crude, removeWords, stopwords(language='english'))
dt<-DocumentTermMatrix(d,control=list(minWordLength=3, minDocFreq=2))
inspect( dt)
I am using R version 2.10, tm package 0.5-3
cheers
Welma
[[alternative HTML
2011 Sep 12
1
findFreqTerms vs minDocFreq in Package 'tm'
I am using 'tm' package for text mining and facing an issue with finding the
frequently occuring terms. From the definition it appears that findFreqTerms
and minDocFreq are equivalent commands and both tries to identify the
documents with terms appearing more than a specified threshold. However, I
am getting drastically different results with both. I have given the results
from both the
2007 Nov 19
6
Reg : using two different matrix : how to do t.test
I have two matrix with same dimensions. I want to do t.test using each column from 2 different matrix.
Row n Column names in both matrix are same.
e.g.
Matrix1
id VC1 VC2 VC3
R 1 2 3
R1 4 5 6
R3 7 8 9
Matrix2
id VC1 VC2 VC3
R 10 11 12
R1 13 14 15
R3 16 17 18
want to do t.test using each column (with same name ) using Matrix1 and Matrix2
for eg
2010 Feb 22
1
rownames cannot allocate vector of size
Hi,
On R 2.10.1 for Windows, when I do the following to duplicate the
structure of a large numeric matrix called matrix1:
matrix2 <- matrix(0,nrow=nrow(matrix1),ncol=ncol(matrix1))
and then
rownames(matrix2) <- rownames(matrix1)
I get a "cannot allocate vector of size xxMb" error
but if I instead do:
rnames <- list()
rnames <- rownames(matrix1)
matrix2 <-
2012 Sep 04
2
Read data from .csv file as a matrix and compare the different between two matrix
Hi,
I have two table matrix, and I would like to compare the different between
two matrix.
For example:
Matrix 1:
A B C
A 0 1 0
B 0 0 1
C 0 0 0
Matrix 2:
A B C
A 0 1 0
B 0 0 0
C 0 0 0
Each column which have value 1, should also return value 1. As in this
case/example, the result should appear like this (as below). The result of
this differentiation should also be in matrix
2004 Feb 24
2
matrix() Help
I have a question related to matrix().
The code below randomly generates 3 Poisson numbers into a 3 by 1 matrix:
> matrix1 <- matrix(rpois(3,lambda=2),nrow=3,ncol=1)
And I use list() to see what they are:
[,1]
[1,] 3
[2,] 1
[3,] 4
, which is what I had intended.
I then I want to randomly generate y Normal numbers into a 3 by 8 matrix. y in this case would be 3, 1, and 4; so
2009 Aug 18
2
Embedding lists in matrices and matrices in lists
Hi,
I'm new to programming, new to R and even new to mailing lists so please
be patient with me. I need to manage many matrices generated by an R
program. These matrices have different dimensions and I'd like to group
them somehow. The best way would be to have a big matrix (let's call it
database) where every element database[x,y] consists of a list of
matrices that all have the
2003 Nov 08
1
Can not connect to SWAT
Hello, Until yesterday (7 nov 03) I had a mostly working 2.27 samba
running on my redhat 9 box that I configured via SWAT. Now I can not get
back into SWAT & I also (in a useless attempt to make it work) upgraded
to samba 3.0 I get the following when trying to start SWAT:
An error occured while loading http://matrix1:901/:
Could not connect to host matrix1 (port 901)
here
2012 Aug 02
1
Filter a matrix with a matrix HELP!
Hi,
just during these vacation days, I'm trying to approach with multicore
package
and I have some troubles with foreach.
What I'm trying to do is to extract a data in coordinate (ii,jj) from a
matrix2,
only if the data in the same coordinate in matrix1 is ==1.
Make this with a nested "for" take a lot of time because I have thousand of
values.
ex.
Binary_hex = NULL
2007 May 04
2
Get the difference between two matrices with different length
Hello,
I have got two matrices with different length. The matrices have 3
columuns. The first two are coordinates. The third is a measurement.
Now I want to get a subtraction between every single value of the
third column (between matrix1 and matrix2), but only if the two
first coordinates in matrix1 and matrix2 are the same.
I tried "FUN=?" in aggregate and ave, but I don't know
2010 Oct 23
1
bind matrices by row
Hi R-users
I have a series of matrices and I would like to bind them together by
column using a loop (i.e. not writing cbind(matrix1,
matrix2,matrix3....)). The reason is because in my real data set I have
a very large number of matrices.
Example:
matrix1 <- matrix (1:12,4,3)
matrix2 <- matrix (13:24,4,3)
matrix3 <- matrix (25:36,4,3)
matrix4 <- matrix (37:48,4,3)
2012 Sep 19
4
correlating matrices
Hi,
thank you for taking the time and reading my question. My question is
twofold:
1. I have several matrices with variables and one matrix with water levels.
I want to predict the water level with the data in the other matrices.
Basically,
* mod<-lm(matrix1 ~ matrix2+matrix3)*
( What looks like a minus is meant to be the wiggly minus.)
Of course I could dissemble the matrices and paste
2007 Nov 21
1
How to select rows with identical index from two matrix?
Dear list,
I have two martix like these, each rows with name in the matrix.
I try to select rows with identical name from two matrix and calculate their correlation.
Matrix1:
2-Sep 9 5.5 1 7.18 10.0 8 139.45
2-Sep 7 4.9 15 8.22 61.68 9 123.62
4-Sep
5-Sep
AAMP
A2M
A2M
.
.
.
Matrix2:
2-Sep 4 7 1 6.8 12 8 19.4
2010 Jan 08
2
How to Merge based on Rows
Let's say that I have a bunch of matrices.
They look like this (pardon using fruit for examples, my actual data tables
are far too enormous):
Matrix1
Apples Oranges Pears
A 5 6 7
B 5 3 4
C 8 9 10
D 11 13 14
E 15 3 8
F 1 4 5
2003 Sep 11
1
Customised legend in lattice
Hi List,
Am trying to customize a legend in trellis: Draws 2x5 lines in 5 colors and
2 linetypes. I would like to add two more items to the legend showing the
key for the line types above the colored legend.
Any suggestions welcome - thanks Herry
#############################
#Following example code:
library(gregmisc)
trellis.device(bg="white")
i1=0
i2=-1.89767506
i3=-1.17087085
2003 Nov 16
2
Can not add users to samba 3.0
Hello, I can not seem to get smbpsswd to add any users to samba. No
matter if I use the CLI, the Webmin module or SWAT I always get this
response when trying to add any user
[root@matrix1 samba]# smbpasswd -m -a gerard
Failed initialise SAM_ACCOUNT for user gerard$.
Failed to modify password entry for user gerard$
I take it this has somehting to do with PAM & or shadow passwords, & I
2010 Feb 10
2
system.time provides inaccurate sys.child (PR#14210)
Full_Name: Manuel L?pez-Ib??ez
Version: R version 2.6.2 (2008-02-08)
OS: linux-gnu
Submission from: (NULL) (164.15.10.156)
This is only relevant for CPU intensive child processes. Otherwise, the problem
is not obvious.
Therefore, we need a CPU intensive program like this one:
/************************************/
/*** Compile with: gcc -o timer-test -O0 timer-test.c -lm */
#include