Displaying 20 results from an estimated 10000 matches similar to: "how to merge several data sets?"
2012 Jul 30
2
distance matrix and hclustering
Dear R Users,i am very new to R. I want your help on an issue regarding distance matrix and cluster analysis
i had discharge data of 4 rivers(a,b,c,d) in 4 vectors each having 364 values
> dput(qmu)structure(list(a = c(0.26, 0.25, 0.25, 0.25, 0.24, 0.23, 0.22, 0.21, 0.21, 0.21, 0.2, 0.19, 0.19, 0.19, 0.19, 0.18, 0.18, 0.18, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17, 0.17,
2003 Apr 11
2
princomp with not non-negative definite correlation matrix
$ R --version
R 1.6.1 (2002-11-01).
So I would like to perform principal components analysis on a 16X16
correlation matrix, [princomp(cov.mat=x) where x is correlation matrix],
the problem is princomp complains that it is not non-negative definite.
I called eigen() on the correlation matrix and found that one of the
eigenvectors is close to zero & negative (-0.001832311). Is there any
way
2010 Mar 31
1
Weird R behaviour?
Dear list,
I have observed a weird behaviour from R --- apologies if I am missing
something obvious!
df3f826f28
df3f826f28
Say you type in R:
>c.preec <- 10074
>c.gd <- 2200
>p1 <- .2
>c.neo <- p1*9451 + (1-p1)*3883
>n.preec <- 3710
>n.gd <- 2650
>n.neo <- 2120
>n.pcos <- 53000
>unit.met <- 94
>cost.met <- 94*n.pcos
>effect <-
2013 May 15
1
x and y lengths differ
I have a problem with R. I try to compute the confidence interval for my
df. When I want to create the plot I have this problem: Error in
xy.coords(x, y, xlabel, ylabel, log) : 'x' and 'y' lengths differ.
I try this code:
library(dplR)
df.rwi <- detrend(rwl = df, method = "Spline",nyrs=NULL)
write.table(df.rwi,file="rwi.txt",quote=FALSE,row.names=TRUE)
2008 Dec 06
1
Morlet wavelet not supportd by wavCWTPeaks
aa <- (structure(list(X.0.85 = c(-1.02, -1.17, -1.29, -1.39, -1.46,
-1.5, -1.52, -1.5, -1.46, -1.39, -1.3, -1.19, -1.07, -0.93, -0.79,
-0.65, -0.5, -0.36, -0.22, -0.08, 0.05, 0.18, 0.3, 0.41, 0.52,
0.62, 0.72, 0.81, 0.89, 0.98, 1.05, 1.13, 1.19, 1.25, 1.29, 1.31,
1.31, 1.29, 1.24, 1.16, 1.06, 0.93, 0.77, 0.58, 0.38, 0.16, -0.07,
-0.31, -0.89, -1.05, -1.19, -1.31, -1.41, -1.47, -1.51, -1.51,
2012 Sep 28
2
Converting array to matrix
Hi,
I have a 3d array as below, I want to make this array to a matrix of p=50(rows) and n=20(columns) with the coverage values .
The code before the array is:
library(binom)
Loading required package: lattice
pi.seq<-seq(from = 0.01, to = 0.5, by = 0.01)
no.seq<-seq(from = 5, to = 100, by = 5)
cp.all = binom.coverage( p = pi.seq, n = no.seq , conf.level = 0.95, method = "exact")
2007 Apr 25
1
help
Hi all,
I have 2 questions:
1)How do I calculate the mean on an imported txt file? I've imported the
file below and that's what it looks like imported. How do I then calcuate
the mean, median, or mode on the column LeafArea using the desktop R
package?
Any help would be greatly appreciated!!
Thanks,
Nat
LeafType Leaflets LeafArea ShapeRatio LeafWeight LeafThickness
1 1
2018 Apr 26
0
Compare test-suite benchmarks performance complied without TBAA, with default TBAA and with new TBAA struct path
Hello,
I was interested in how much Type-Based Alias Analysis helps to optimize code. For that purpose, I've compared
three sets of benchmarks: compiled without TBAA, compiled with a default TBAA metadata format, and compiled
with new TBAA metadata format.
As a set of benchmarks, I've used the LLVM test suite (http://llvm.org/docs/TestingGuide.html#test-suite-overview)
which has a lot of
2013 May 23
1
sample(c(0, 1)...) vs. rbinom
Greetings.? My wife is teaching an introductory stat class at UC Davis.? The
class emphasizes the use of simulations, rather than mathematics, to get
insight into statistics, and R is the mandated tool.?? A student in the class
recently inquired about different approaches to sampling from a binomial
distribution.? I've appended some code that exhibits the idea, the gist of
which is that using
2008 Feb 03
0
[LLVMdev] 2.2 Prerelease available for testing
Target: FreeBSD 6.2-STABLE on i386
autoconf says:
configure:2122: checking build system type
configure:2140: result: i386-unknown-freebsd6.2
[...]
configure:2721: gcc -v >&5
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.4.6 [FreeBSD] 20060305
[...]
objdir != srcdir, for both llvm and gcc.
Release build.
llvm-gcc 4.2 from source.
2011 Jan 21
4
clustering fuzzy
hello,
i'm pete ,how can i order rows of matrix by max to min value?
I have a matrix of membership degrees, with 82 (i) rows and K coloumns, K
are clusters.
I need first and second largest elements of the i-th row.
for example
1 0.66 0.04 0.01 0.30
2 0.02 0.89 0.09 0.00
3 0.06 0.92 0.01 0.01
4 0.07 0.71 0.21 0.01
5 0.10 0.85 0.04 0.01
6 0.91 0.04 0.02 0.02
7 0.00 0.01 0.98 0.00
8 0.02
2010 Feb 17
2
extract the data that match
Hi r-users,
I would like to extract the data that match. Attached is my data:
I'm interested in matchind the value in column 'intg' with value in column 'rand_no'
> cbind(z=z,intg=dd,rand_no = rr)
z intg rand_no
[1,] 0.00 0.000 0.001
[2,] 0.01 0.000 0.002
[3,] 0.02 0.000 0.002
[4,] 0.03 0.000 0.003
[5,] 0.04 0.000 0.003
[6,]
2002 Oct 09
1
Large F-value and small P-value
Hi all,
I computed a Wilks Lambda Test with manova:
> df.man <- manova(df.mul ~ 1, na.rm=TRUE)
> summary(df.man, intercep=T, test="Wilks")
Df Wilks approx F num Df den Df Pr(>F)
(Intercept) 1 0.0002824 393.3 9 1 0.03911 *
Residuals 9
---
Signif. codes: 0 `***' 0.001 `**' 0.01 `*'
2009 Oct 20
1
[LLVMdev] 2.6 pre-release2 ready for testing
On Oct 20, 2009, at 6:02 AM, Duncan Sands wrote:
> Hi Tanya,
>
>> 1) Compile llvm from source and untar the llvm-test in the projects
>> directory (name it llvm-test or test-suite). Choose to use a pre-
>> compiled llvm-gcc or re-compile it yourself.
>
> I compiled llvm and llvm-gcc with separate objects directories.
> Platform is x86_64-linux-gnu.
>
Ok.
2007 Apr 11
1
Programming Problem (for loop, random # control, 3 dimentional graph)
Dear List,
This is just a programming problem which i cannot seem
to figure out. I am trying to get a set of power from
a test (say, kolmogorov smirnov) out of a distribution
(say, G-K distribution) as follows. I am trying to
reduce to pain of writing the whole set of data points
(p# below) using "for" loop. However, I seem to have
some problem in it as the output "M" does not
2010 Feb 04
1
for loop with if statment problem
Both of the approx functions work correctly individually, but they are
not being distinguished in the for loop by the if statments. Any help
would be appreciated. for loop of interest is below
x <- (structure(list(Site = structure(c(2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L,
2009 Oct 20
1
[LLVMdev] 2.6 pre-release2 ready for testing
G'Day Tanya,
Is it too late to bring in the following patches to fix some major
brokenness in the AuroraUX tool chain for 2.6?
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?r1=84468&r2=84469&view=diff&pathrev=84469
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?r1=84265&r2=84266&view=diff&pathrev=84266
2007 Mar 05
4
Identifying last record in individual growth data over different time intervalls
Hi
I have a plist t which contains size measurements of individual plants,
identified by the field "plate". It contains, among other, a field
"year" indicating the year in which the individual was measured and the
"height". The number of measurements range from 1 to 4 measurements in
different years.
My problem is that I would need the LAST measurement. I only
2008 Dec 02
1
ggplot2 facet_wrap problem
Hadley,
I don't know if I am doing something wrong or if it is ggplot please
see the two graphs at the bottom of the page (code).
melt.nut <- (structure(list(RiverMile = c(119L, 119L, 119L, 119L, 119L, 119L,
119L, 119L, 119L, 148L, 148L, 148L, 148L, 148L, 148L, 148L, 179L,
179L, 179L, 179L, 179L, 179L, 179L, 185L, 185L, 185L, 185L, 185L,
185L, 185L, 190L, 190L, 190L, 190L, 190L, 190L,
2009 Jul 26
2
problems hist() and density
Hello,
I have a problem with the hist() function and showing densities. The
densities sum to 50 and not to 1! I use R version 2.9.1 (2009-06-26) and
I load the seqinR library.
My data is the following vector:
[1] 0.1400000 0.2000000 0.2200000 0.2828283 0.1600000 0.1600000
0.3600000
[8] 0.1600000 0.2200000 0.2600000 0.2000000 0.3000000 0.2200000
0.2342342
[15] 0.1800000 0.2200000 0.1600000