Displaying 20 results from an estimated 100 matches similar to: "weights in glm (PR#8720)"
2007 Nov 12
1
update matrix with subset of it where only row names match
I guess this has a simple solution:
I have matrix 'mat1' which has row and column names, e.g.:
A B C
row1 0 0 0
row2 0 0 0
....
rown 0 0 0
I have a another matrix 'mat2', essentially a subset of 'mat1' where the
rownames are all in 'mat1' e.g.:
B
row3 5
row8 6
row54 7
I want to insert the values of matrix mat2 for column B (in reality it
could be some or
2009 Mar 05
3
Dropping rows conditionally
Dear R-help team,
I am getting addicted to using R but keep on getting many challenges on the way especially on data management (data cleaning).
I have been wanting to drop all the rows if there values are `NA' or have specific values like 1 or 2 or 3.
mdat <- matrix(1:21, nrow = 7, ncol=3, byrow=TRUE,
dimnames = list(c("row1",
2007 Dec 07
0
Bug#454678: r-base-core: Crash when calling edit.matrix with edit.row.names = TRUE when there are no rownames (PR#10500)
Ben,
Thanks for the bug report. I am off two minds about it as discussed below.
But as it does indeed create a crash / segfault, I am passing this on to the
R bug tracker. A suggested two-line patch is below; I tested the patch
against a 'vanilla' 2.6.1 source tree.
On 6 December 2007 at 19:32, Ben Goodrich wrote:
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2007 Dec 07
0
(PR#10500) Bug#454678: r-base-core: Crash when calling
I would say this was user error (insisting on editing non-existent
rownames), although the argument is documented. You could argue that
there are implicit rownames, but they would be 1, 2 ... not row1, row2
.... And rownames(mat) is NULL.
For an interactive function the best solution seems to be to throw an
error when the user asks for the impossible.
I'll fix it for 2.7.0: it
2002 Apr 05
2
Bug in all versions of OpenSSH
Hi,
I found a bug in all versions of SSH. I'll give you an example when the
bug occurs. When I connect to a remote computer using 'ssh
user at host.somewhere.in.th.net.com /bin/bash' (or /bin/tcsh) I log into
the remote computer and SSHD doesn't log this in wtmp,utmp,secure and
lastlog. It's *only* visible in /var/log/messages. That's all I want to
tell You. I hope
2009 Dec 27
4
how to create a simple loop ?
I have a 5-row matrix called “data”. There are headers.
it look like this :
Row 1 Row2 Row3 Row4 Row5
Line1 … … … …
Line2 … … … …
Line3 … … … …
…
Line 1838 … … … …
I want to calculate several simple arithmetic means for Row5, that
2007 Jan 06
2
Get column value of col1 .. col10
Hi,
I have a table with column name like col1, col2, col3, col4 ... col10.
In rails, after I get the instance of the class, I would like to use a
for loop to retrieve values from these columns and put them into a hash.
The hash will be used for another find call. Is that possible?
Thanks.
Arnold
--
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2012 Jan 25
1
[Bug 8720] New: rsync -n -e ssh creates ssh tunnel which fails to close after command completes
https://bugzilla.samba.org/show_bug.cgi?id=8720
Summary: rsync -n -e ssh creates ssh tunnel which fails to
close after command completes
Product: rsync
Version: 2.6.8
Platform: x64
OS/Version: Other
Status: NEW
Severity: normal
Priority: P5
Component: core
AssignedTo: wayned at
2012 Oct 18
4
speeding read.table
R 2.15.1
OS X
Colleagues,
I am reading a 1 GB file into R using read.table. The file consists of 100 tables, each of which is headed by two lines of characters.
The first of these lines is:
TABLE NO. 1
The second is a list of column headers.
For example:
TABLE NO. 1
COL1 COL2 COL3 COL4 COL5 COL6 COL7 COL8 COL9 COL10
2003 Dec 04
6
get mean of several rows
Dear all!
After hours of trying around, I gave up:
I have a 2-dimensional array, and I know how to split it into its rows
and how to get the mean for every row using 'sapply'.
But what I want is to calculate the mean over the first n rows, and then
the second n rows, etc., so that I get a vector like:
v == mean1(row 1:5), mean2(row6:10),...
(trivial, you might say. I find it rather
2013 Jan 03
5
splitting matrices
Dear useRs,
i want to split a matrix having 1116rows and 12 columns. i want to split that matrix into 36 small matrices each having 12 columns and 31 rows. The big matrix should be splitted row wise. which means that the first small matrix should copy values which are in first 31 rows and 12 columns of the big matrix. similarly 2nd small matrix should contain values from 32nd to 63rd row of the
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
2005 May 02
4
"apply" question
Dear R users,
I??ve got a simple question but somehow I can??t find the solution:
I have a data frame with columns 1-5 containing one set of integer
values, and columns 6-10 containing another set of integer values.
Columns 6-10 contain NA??s at some places.
I now want to calculate
(1) the number of values in each row of columns 6-10 that were NA??s
(2) the sum of all values on columns 1-5
2013 Jan 02
4
list of matrices
dear useRs,
i have a list containing 16 matrices. i want to calculate the column mean of each of them.
i tried
>sr <- lapply(s,function(x) colMeans(x, na.rm=TRUE))
but i am getting the following error
>Error in colMeans(x, na.rm = TRUE) : 'x' must be numeric
can it be done in any other way? and why i am getting this error??
thanks in advance..
elisa
[[alternative
2012 Nov 23
6
Summary statistics for matrix columns
Hi,
is there a way I can calculate a summary statistics for a columns matrix
let say we have this matrix
x <- matrix(sample(1:8000),nrow=100)
colnames(x)<- paste("Col",1:ncol(x),sep="")
if I used summary
summary(x)
i get the output for each column but I need the output to be in matrix with
rownames and all the columns beside it
this how I want it
2010 Mar 27
1
select n rows
Hello everyone,
I have a matrix with 8000 rows. If I want to select every 8 rows, (i.e.
row1, row2, ..., row8), what should I do?
Appriciate for any hints!
Thanks a lot!
Leo
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2009 Nov 05
1
Set colors in a PCA plot based on a gradient vector
Hi all,
I'm making a PCA plot with eight variables (columns taken from a larger data frame "fieldTrial0809[idx,c(39:46)]"). I then want the symbols in the plot to be colored as a gradient from red to blue, depending on the value of another column in "fieldTrial0809[idx, c(48)]" containg temperatures from -12.1 to -5.4.
I don't want to use the heat.colors(n)
2006 Nov 30
4
Quicker way of combining vectors into a data.frame
Hi,
In a function, I compute 10 (un-named) vectors of reasonable length
(4471 in the particular example I have to hand) that I want to combine
into a data frame object, that the function will return.
This is very slow, so *I'm* doing something wrong if I want it to be
quick and efficient, though I'm not sure what the best way to do this
would be.
I know it is the combining into data
2005 Apr 25
4
panel ordering in nlme and augPred plots
Dear all
I am trying nlme together with Pinheiro/Bates book. I constructed
grouped data object with suitable plotting layout (according to
some common factor, panels from bottom to top are in increasing
order).
When I do nlme(... some stuff...) I get fitted object which I can plot
with
plot(augPred(fit.nlme6, level=0:1))
but it results in completely different ordering. Is there any way
2012 May 11
0
help with SMATR: help with pairwise comparisons using MA regression?
Hi there,
I've been using the SMATR package to do standardized major axis (SMA)
regression on allometric data, and I've been able to to pairwise
comparisons of slope & elevation between multiple study sites.
Now I'm trying to do the same thing using major axis (MA) regression,
but I'm getting errors (SMATR should be able to do MA as well as SMA
regression for everything,