Displaying 20 results from an estimated 10000 matches similar to: "longer object length is not a multiple of shorter object length"
2010 Dec 07
4
increase or decrease variable by 1
many languages have shorthands for that operation like:
variable += 1
or
++variable
is there something like that in R ?
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2010 Nov 21
3
how to get rid of unused space on all 4 borders in plot() render
x= c(1,5,7,-3,4)
y= c(2,4,-5,2,5)
plot(x,y,ylim=c(-20,20),xlim=c(min(x),max(x)),pch='X',col = rgb(0, 0, 0,
0.5),yaxt="n", ann=FALSE)
and this code produces:
http://i53.tinypic.com/ffd7d3.png
Where I marked in red areas that I want to get rid of and use as much real
screen estate as I can.
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2010 Nov 03
3
longer object length is not a multiple of shorter object length
Hi folks,
I'm following An Introduction to R
http://cran.r-project.org/doc/manuals/R-intro.html#R-and-statistics
to learn R.
Coming to;
2.2 Vector arithmetic
> v <- 2*x + y + 1
Warning message:
In 2 * x + y :
longer object length is not a multiple of shorter object length
What does it mean? How to rectify it? Please help. TIA
B.R.
Stephen L
2011 Jul 22
1
cv.glm and "longer object length is not a multiple of shorter object length" error
Hi,
I've done some searching where others have had trouble with this error (or
"warning" actually), but I'm unable to solve my problem. I have a data
sheet with 13 columns and 36 rows. Each column has exactly the same number
of rows. I've created glms and now want to do cross-validation on 2 of
them. Please be gentle-- I'm new to R (and statistics, too, for that
2005 Apr 18
4
longer object length, is not a multiple of shorter object length in: kappa * gcounts
Hi,
I was using a density estimation function as follows:
> est <- KernSmooth::bkde(x3, bandwidth=10)
When setting bandwidth less than 5, I got the error "longer object
length, is not a multiple of shorter object length in: kappa * gcounts ".
I wonder if there is anybody who can explain the error for me?
Thanks!
Hui
2010 Sep 08
3
Regression using mapply?
Hi,
I have huge matrices in which the response variable is in the first
column and the regressors are in the other columns. What I wanted to do
now is something like this:
#this is just to get an example-matrix
DataMatrix <- rep(1,1000);
Disturbance <- rnorm(900);
DataMatrix[101:1000] <- DataMatrix[101:1000]+Disturbance;
DataMatrix <- matrix(DataMatrix,ncol=10,nrow=100);
#estimate
2011 Feb 10
3
Permuting rows of a matrix
Hi,
I need to permute the rows of a matrix, where each row is independently rearranged. A simple solution is this:
shuffled <- datamatrix <- matrix(1:24, ncol = 4)
for (i in 1:nrow(datamatrix)) { shuffled[i, ] <- sample(datamatrix[i, ]) }
> datamatrix
[,1] [,2] [,3] [,4]
[1,] 1 7 13 19
[2,] 2 8 14 20
[3,] 3 9 15 21
[4,] 4 10 16 22
[5,]
2010 Nov 21
8
[beginner] simple keyword to exit script ?
I have tried quit(), and return() but first exits from whole graphical
interface and second is only for functions. What I need only to exit from
current script and return to the console.
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2007 Feb 13
1
Questions about results from PCAproj for robust principal component analysis
Hi.
I have been looking at the PCAproj function in package pcaPP (R 2.4.1) for
robust principal components, and I'm trying to interpret the results. I
started with a data matrix of dimensions RxC (R is the number of rows /
observations, C the number of columns / variables). PCAproj returns a list
of class princomp, similar to the output of the function princomp. In a
case where I can
2008 Mar 03
2
handling big data set in R
Hello R users,
I'm wondering whether it is possible to manage big data set in R? I
have a data set with 3 million rows and 3 columns (X,Y,Z), where X is
the group id. For each X, I need to run 2 regression on the submatrix.
I used the function "split":
datamatrix<-read.csv("datas.csv", header=F, sep=",")
dim(datamatrix)
# [1] 2980523 3
2010 Nov 22
2
I need a very specific unique like function and I don't know even how to properly call this
consider this matrix:
[,1] [,2]
[1,] 3 7
[2,] 6 5
[3,] 7 5
[4,] 3 5
[5,] 7 5
[6,] 5 5
[7,] 8 4
[8,] 2 4
[9,] 7 4
[10,] 0 6
I need to delete all rows where column 2 above and below has the same value,
so the effect would be:
[,1] [,2]
[1,] 3 7
[2,] 6 5
[6,] 5 5
[7,] 8 4
[9,] 7 4
[10,] 0 6
2009 May 14
3
memory usage grows too fast
Hi All,
I have a 1000x1000000 matrix.
The calculation I would like to do is actually very simple: for each row, calculate the frequency of a given pattern. For example, a toy dataset is as follows.
Col1 Col2 Col3 Col4
01 02 02 00 => Freq of ?02? is 0.5
02 02 02 01 => Freq of ?02? is 0.75
00 02 01 01 ?
My code is quite simple as the following to find the pattern ?02?.
2004 Jul 13
5
Help with factanal and missing values
Hi list,
I'm performing a series of confirmatory factor analysis on different
groupings of items from data collected with questionnaires. There are some
missing values.
For those sets with no missing values I call
factanal(datamatrix,factors=n)
where datamatrix is a table of all observations for the items under
investigation.
This call fails when there are missing values.
help(factanal)
2010 Dec 07
1
please show me simple example how to plot "Distance-Weighted Least Squares" fitting
I got simple x,y pairs of data and simple scatterplot and just cannot figure
how to do it , there are many examples but always there is error popping out
please show me an example stripped with additional data just core of what I
need to do to get this damn line
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2010 Dec 08
1
how to strip list from NA values looking only at one column ?
I have got a list with 3 colums x,y,z, now I want do delete whole rows where
column z has NA values
I am not intereted in x and y columns if there are also NA values or not,
moreover I do not want to touch them because if there would be NA that would
mean a more serious error for me, and I have cath for that somewhere else
I am asking because I only saw an example where function loops over all
2010 Dec 08
1
how to make partial mean() of a matrix only when second value matching some logic
for example I have matrix with two columns
x,y
1,0.56
2,9.55
2,7.56
5,2.55
5,0.56
3,0.55
2,0.56
2,1.56
so I need to take average from y values placed where x==2
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2004 Apr 27
1
beginners k means clustering question
Hi all,
I am wandering.. is it possible to cluster data which is in a single
column ?
for example.. I have some data as follows:
4013
7362
7585
9304
11879
14785
21795
30500
30669
30924
33988
36975
40422
42911
50501
51593
53729
54338
55497
57337
61993
62601
66229
69815
69933
70760
71340
75921
83972
90134
91061
.
.
.
is it possible to cluster this data since it is in a single column ?
I have
2009 Jan 20
1
heatmap.2 color issue
Dear All:
I tried to use heatmap.2 to generate hierarchical clustering using the following command:
heatmap.2(datamatrix, scale="row", trace="none", col=greenred(256), labRow=genelist[,1], margins=c(10,10), Rowv=TRUE, Colv=TRUE)
datamatrix is subset of a RMA normalized data subset by a genelist.
The problem is a lot of times, the z-score in key are from, like -5 to 15 or
2012 Jul 24
4
ERROR : cannot allocate vector of size (in MB & GB)
Hi,
Here in R, I need to load a huge file(.csv) , its size is 200MB. [may come
more than 1GB sometimes].
When i tried to load into a variable it taking too much of time and after
that when i do cbind by groups,
getting an error like this
" Error: cannot allocate vector of size 82.4 Mb "
My requirement is, spilt data from Huge-size-file(.csv) to no. of small csv
files.
Here i will give
2012 Aug 10
1
Split CSV as per file size
Hi here i have a code to split a csv file as per group of line.
The code given below,
------------------------------------
SplitCSVByLine <- function(DataMatrix,Destination,NoOfLineToGroup)
{
input <- file(DataMatrix, "r")
fileNo <- 1
repeat
{
myLines <- readLines(input, n=NoOfLineToGroup)
if (length(myLines) == 0) break