Displaying 9 results from an estimated 9 matches for "aegea".
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aegean
2009 Dec 04
2
how to seperate a matrix
Hello,
I am working on seperate the matrix to two matrices but got trouble on doing
it. Please give me some suggestions on doing this. Thanks a looooooooooooot!
My original matrix m is as follows for example,
[,1] [,2] [,3]
[1,] 6 8 1
[2,] 5 9 2
[3,] 20 10 3
[4,] 7 11 4
[5,] 8 12 5
[6,] 25 13 6
[7,] 14 14 7
I want to generate two
2010 Jul 23
4
how to calculate the product of every two elements in two vectors
Thanks in advance!
A=c(1, 2,3)
B=c (9, 10, 11, 12)
I want to get C=c(1*9, 1*10, 1*11, 1*12, ....., 3*9, 3*10, 3*11, 3*12)?
C is still a vector with 12 elements
Is there a way to do that?
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2010 Feb 18
3
Can R make an usual dotplot
Dear R experts,
Can R make an usual dotplot just like Minitab and other softwares?
I have the following data, and can use dotchart to graph a dotplot:
y=c(2.873438152e-01, -8.732895642e-01,
4.579001889e-01, 1.047395204e+00,
8.491182299e-02 , -1.938007105e+00,
-1.273708343e+00, 9.848010588e-05,
7.238490734e-01, -1.490552717e+00)
dotchart(y, xlab="10 observations from
2010 Jan 04
3
how to draw abline correctly?
Hello, I am frastruated with this graph, just cannot get what I need. Thank
you for any suggestions or help. I really appreciate it. I wrote the
following code, but there are 3 problems
1, the red line is added on the graph but without any marker on the y-axis.
I want to display the number '.1361' on the y-axis. So people can easily
tell 'method 2' gets a constant estimate, which
2009 Dec 02
2
calculation problem when export and import data
Hello,
I have a question on export and import data. Thank you for any suggestions.
data 'simul' is generated as follows:
N <- 20
n <- N/2
nsets <- 10
simul <- matrix(0,nsets,N)
th <- c(0,1, 1)
for(i in 1:nsets){
simul[i,] <- rnorm(N,mean= rep(th[1:2],N/2),sd=th[3])
}
I exported data as follows:
write.table(simul,
2009 Dec 04
1
how to calculate covariance matrix in R? why cov doesn't work
Hello,
Sorry. It may be a stupid question.
I have two vectors
a<-c(9,3,5)
b<-c(3,4,1)
How can I get the variance-covariance matrix of these two vectors?
I tried cov(a,b), I got a number not a matrix.
I tried to transpose vector a and b as t(a) and t(b), it still cannot work.
Any suggestions? Thank a lot!
--
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2010 Sep 17
1
How to denote a line on the graph
Please give me some help, many thanks.
I graphed a expected CDF line of a binomial distribution on a graph,
And I have some observed points (observed CDF) from 4 groups fall on the
smooth CDF line.
I cannot really get the legend I want
legend ('topleft', c('a, 'b', 'c', 'd', 'expected CDF'), col=c(1,2,3,4),
pch=c(0,1,2, 3, '' ),
2010 Jul 26
1
After writing data in MMF using SEXP structure, can i reference in R?
...n Survreg Function (Vipul Agarwal)
40. Re: Equivalent to go-to statement (Gabor Grothendieck)
----------------------------------------------------------------------
Message: 1
Date: Sat, 24 Jul 2010 03:02:47 -0700
From: Dennis Murphy <[5]djmuser at gmail.com>
To: aegea <[6]gcheer3 at gmail.com>
Cc: [7]r-help at r-project.org
Subject: Re: [R] how to calculate the product of every two elements in
two vectors
Message-ID:
<AANLkTinUJjoCiG47ptPq5Eo_fXYZXuQbUzB=+[8]KLCO6QX at mail.gmail.com>
Content-Type: text/plain
as.vec...
2010 Feb 01
1
how to generate data set with different length and calculate the mean?
Hello,
This may be a rare question. I am struggling to solve it. I really
appreciate any help or suggestions. Thanks a lot in advance!
I put my questions between the code to make it clear. The problem I have is:
I generated 10 data sets with 8 data for each set. Now I want to change the
number of data in each dataset according to a vector 'size' (as follows),
that is, each new dataset