[R] create one bigger matrix with one smaller matrix
Dear R users, Suppose that I have a matrix A A <- matrix(c(1,2,3,4),2,2) > A [,1] [,2] [1,]13 [2,]24 With this matrix A, I'd like to create bigger one, for example, [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14] [1,]131313131 3 1 3 1 3 [2,]242424242 4 2 4 2 4 [3,]131313131 3 1 3 1 3 [4,]242424242 4 2 4 2 4 [5,]131313131 3 1 3 1 3 [6,]242424242 4 2 4 2 4 [7,]131313131 3 1 3 1 3 [8,]242424242 4 2 4 2 4 [9,]131313131 3 1 3 1 3 [10,]242424242 4 2 4 2 4 [11,]131313131 3 1 3 1 3 [12,]242424242 4 2 4 2 4 [13,]131313131 3 1 3 1 3 [14,]242424242 4 2 4 2 4 In fact, I want much bigger one. I wonder if there is an elegant way to do this? Any suggestions? Thank you! Best wishes and Happy new year Kathie [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] elegant way to create a sequence with the 'rep' bulit-in function
Dear R users, I'd like to create a sequence/vector, for example, 1 1 2 2 3 3 1 1 2 2 3 3 1 1 2 2 3 3 1 1 2 2 3 3 4 4 4 4 5 5 5 5 4 4 4 4 5 5 5 5 4 4 4 4 5 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 6 6 6 7 7 7 8 8 8 9 9 9 So I did like this below. a - 4 b - 3 c - 2 grp - c( rep(1:b, each=c, times=a), rep(1:c, each=a, times=b)+b, rep(1:a, each=b, times=c)+b+c ) I wonder if there is a more elegant way to do this? Any suggestions? Thank you! Best wishes Kathie [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] how to draw a legend outside of the plot
Dear R users, I have three plots, so I tried, for exmple, par(mfrow=c(2,2)) y1 - rnorm(100) y2 - rnorm(100) y3- rnorm(100) plot(y1);plot(y2);plot(y3) Here, I'd like to put a legend on the bottom right hand side (empty space). is it possible? Thanks for helping, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] create a function with subset statement
Dear R experts, Suppose I have a matrix A below. a - rep(1:4, each=5) b - rep(1:5, 4) c - rnorm(20) A - cbind(a,b,c) A a bc [1,] 1 1 0.761806718 [2,] 1 2 0.239734573 [3,] 1 3 -0.728339238 [4,] 1 4 -0.121946174 [5,] 1 5 -0.131909077 [6,] 2 1 -0.069790098 [7,] 2 2 1.082671767 [8,] 2 3 -0.869537195 [9,] 2 4 -0.417222758 [10,] 2 5 -2.432273481 [11,] 3 1 0.425432121 [12,] 3 2 -2.453299938 [13,] 3 3 0.612125174 [14,] 3 4 -0.005387462 [15,] 3 5 1.911146222 [16,] 4 1 0.161408685 [17,] 4 2 0.567118882 [18,] 4 3 -0.948882839 [19,] 4 4 0.485002340 [20,] 4 5 -0.551981333 With this matrix A, I'd like to create several sub-matrices, for example B - subset(A, (A[,1] %in% c(1,2) A[,2] %in% c(1,2)) | (A[,1] %in% c(3) A[,2] %in% c(1) ) | (A[,1] %in% c(4) A[,2] %in% c(1:4)) ) B a b c [1,] 1 1 0.7618067 [2,] 1 2 0.2397346 [3,] 2 1 -0.0697901 [4,] 2 2 1.0826718 [5,] 3 1 0.4254321 [6,] 4 1 0.1614087 [7,] 4 2 0.5671189 [8,] 4 3 -0.9488828 [9,] 4 4 0.4850023 or C - subset(A, (A[,1] %in% c(1:4) A[,2] %in% c(1,2)) ) C a b c [1,] 1 1 0.7618067 [2,] 1 2 0.2397346 [3,] 2 1 -0.0697901 [4,] 2 2 1.0826718 [5,] 3 1 0.4254321 [6,] 3 2 -2.4532999 [7,] 4 1 0.1614087 [8,] 4 2 0.5671189 or D - subset(A, (A[,1] %in% c(1,2) A[,2] %in% c(1:3)) | (A[,1] %in% c(3) A[,2] %in% c(1,2)) ) D a b c [1,] 1 1 0.7618067 [2,] 1 2 0.2397346 [3,] 1 3 -0.7283392 [4,] 2 1 -0.0697901 [5,] 2 2 1.0826718 [6,] 2 3 -0.8695372 [7,] 3 1 0.4254321 [8,] 3 2 -2.4532999 and so forth. I am wondering if I could create matrices B, C, D etc AT ONE TIME. In order to do that, I guess I need to make a function. unfortunately, I have no idea how to do that. Any suggestion will be greatly appreciated. Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] create new matrices with specific patterns
Dear R users, Suppose I have a matrix A. p - 1:4 q - 1:5 P-rep(p, each=5) Q-rep(q, 4) A - cbind(P,Q) A P Q [1,] 1 1 [2,] 1 2 [3,] 1 3 [4,] 1 4 [5,] 1 5 [6,] 2 1 [7,] 2 2 [8,] 2 3 [9,] 2 4 [10,] 2 5 [11,] 3 1 [12,] 3 2 [13,] 3 3 [14,] 3 4 [15,] 3 5 [16,] 4 1 [17,] 4 2 [18,] 4 3 [19,] 4 4 [20,] 4 5 With the matrix A, I'd like to generate new matrices B, ..., E below. B = A[(3,4), (1,2)] C = A[(2,2), (1,5), (1,1)] D = A[(4,2)] E = A[(3,0), (1,4)] Matrix B means that first three 'p's (1,2,3) has four 'q's (1,2,3,4) and the forth 'p' element (4) has two 'q's (1,2); in other words, Is there the easyiest way to create B,...,E in R? Actually, the example above is a toy example and the matrix A I have is around 10,000 by 10,000 and the pattern is also very complicated. Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] create new matrices with specific patterns
Sorry for inconvenience. For clarification, The matrix B looks like B P Q [1,] 1 1 [2,] 1 2 [3,] 1 3 [4,] 1 4 [5,] 2 1 [6,] 2 2 [7,] 2 3 [8,] 2 4 [9,] 3 1 [10,] 3 2 [11,] 3 3 [12,] 3 4 [13,] 4 1 [14,] 4 2 The matrix E is E P Q [1,] 4 1 [2,] 4 2 [3,] 4 3 [4,] 4 4 On Tue, Jan 27, 2015 at 11:47 AM, Kathryn Lord kathryn.lord2...@gmail.com wrote: Dear R users, Suppose I have a matrix A. p - 1:4 q - 1:5 P-rep(p, each=5) Q-rep(q, 4) A - cbind(P,Q) A P Q [1,] 1 1 [2,] 1 2 [3,] 1 3 [4,] 1 4 [5,] 1 5 [6,] 2 1 [7,] 2 2 [8,] 2 3 [9,] 2 4 [10,] 2 5 [11,] 3 1 [12,] 3 2 [13,] 3 3 [14,] 3 4 [15,] 3 5 [16,] 4 1 [17,] 4 2 [18,] 4 3 [19,] 4 4 [20,] 4 5 With the matrix A, I'd like to generate new matrices B, ..., E below. B = A[(3,4), (1,2)] C = A[(2,2), (1,5), (1,1)] D = A[(4,2)] E = A[(3,0), (1,4)] Matrix B means that first three 'p's (1,2,3) has four 'q's (1,2,3,4) and the forth 'p' element (4) has two 'q's (1,2); in other words, Is there the easyiest way to create B,...,E in R? Actually, the example above is a toy example and the matrix A I have is around 10,000 by 10,000 and the pattern is also very complicated. Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] sum of grouped elements of vector
Dear R users, I have a quick quesiton. Here is a vector a. a- c(1,2,3,4,5,6,7,8). (In fact, I have a huge vector.) With a, I'd like to create new vectors, for example, new1 = (1+2, 3, 4+5+6, 7+8) new2 = (1, 2+3+4+5+6+7, 8) new3 = (1+2+3+4+5+6+7, 8) How could I make the above vectors using R? Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] create matrices with constraint
Dear all, Suppose that I have natural numbers 1 through 28. Based on these numbers, choose 4 numbers 7 times without replacement and make a 4 by 7 matrix, for example, a1 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,]159 13 17 21 25 [2,]26 10 14 18 22 26 [3,]37 11 15 19 23 27 [4,]48 12 16 20 24 28 and again create another 4 * 7 matrix, say a2, in the same way; however, every element of each column in a2 does not exist in any column of a1 like this, e.g. a2 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,]1234567 [2,]89 10 11 12 13 14 [3,] 15 16 17 18 19 20 21 [4,] 22 23 24 25 26 27 28 and again create another 4 * 7 matrix, say a3, in the same way; however, every element of each column in a3 does not exist in any column of a1 and a2. Using same logic, I'd like to make the matrices (a3, a4, a5) as many as possible. Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] make matrices as many as possible with a constraint
Dear R users, I'd like to make 4 by 7 matrices as many as possible with natural numbers 1 through 28 such that each matrix have different elements of each column. For example, simply here is one a1 - matrix(1:28, 4,7) a1 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,]159 13 17 21 25 [2,]26 10 14 18 22 26 [3,]37 11 15 19 23 27 [4,]48 12 16 20 24 28 another one a2 - matrix(1:28, 4,7, byrow=T) a2 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,]1234567 [2,]89 10 11 12 13 14 [3,] 15 16 17 18 19 20 21 [4,] 22 23 24 25 26 27 28 Matrices a1 and a2 have different columns, and I guess there are such many matrices. Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] pair-wise computation of columns in a matrix
Dear R users,
I'd like to compute rho(looks like a correlation matrix) with every two
columns of uu matrix below.
Toy example,
uu - matrix(1:15, nr=3, nc=5)
uu
[,1] [,2] [,3] [,4] [,5]
[1,]147 10 13
[2,]258 11 14
[3,]369 12 15
rho - function(x,y)
{
sum(x*y)/(sqrt(sum(x^2))*sqrt(sum(y^2)))
}
rho_12 - rho(uu[,1],uu[,2])
rho_13 - rho(uu[,1],uu[,3])
rho_14 - rho(uu[,1],uu[,4])
rho_15 - rho(uu[,1],uu[,5])
rho_23 - rho(uu[,2],uu[,3])
rho_24 - rho(uu[,2],uu[,4])
rho_24 - rho(uu[,2],uu[,5])
rho_34 - rho(uu[,3],uu[,4])
rho_35 - rho(uu[,3],uu[,5])
rho_45 - rho(uu[,4],uu[,5])
Actually, the matrix uu is huge, 20*1000. Would you plz tell me how to
calculate rho, more efficiently??
Any suggestion will be greatly appreciated.
Best,
Kathryn Lord
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[R] replace NA with another vector
Dear R users, I have two different vectors like below x - c( NA, NA, 3, NA, 1) y - c( 20, 40 ,50) Combining x and y, I'd like to create new vector z z - c(20, 40, 3, 50, 1) Any suggestion will be greatly appreciated. Best, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] matrix manipulation with its rows
Dear R users, I have a question about matrix manipulation with its rows. Plz see the simple example below sample - list(matrix(1:6, nr=2,nc=3), matrix(7:12, nr=2,nc=3), matrix(13:18,nr=2,nc=3)) sample [[1]] [,1] [,2] [,3] [1,]135 [2,]246 [[2]] [,1] [,2] [,3] [1,]79 11 [2,]8 10 12 [[3]] [,1] [,2] [,3] [1,] 13 15 17 [2,] 14 16 18 With this list, I'd like to create this below [[1]] [,1] [,2] [,3] [,4] [,5] [,6] [1,]135 000 [2,]000 246 [[2]] [,1] [,2] [,3] [,4] [,5] [,6] [1,]79 11 000 [2,] 0008 10 12 [[3]] [,1] [,2] [,3] [,4] [,5] [,6] [1,] 13 15 17 000 [2,] 000 14 16 18 Any suggestion will be greatly appreciated. Regards, Kathryn Lord [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Table to matrix
Dear R users,
I am trying to make this (3 by 10) matrix A
--A
0 0 00 1 0 0 0 0 0
0 0 00 0 1 0 0 0 0
0 0.5 0.5 0 0 0 0 0 0 0
---
from mass.func
--mass.func---
mass.func
$`00`
prop
5
1
$`10`
prop
6
1
$`11`
prop
2 3
0.5 0.5
-
which means that
A[1,5] = 1
A[2,6] =1
A[3,2] = A[3,3] = 0.5
otherwise, zero.
Any suggestion will be greatly appreciated.
Regrads,
Kathryn Lord
p.s.
Here is R code.
--
dat - as.data.frame(matrix( c( 2, 1, 1, 3, 1, 1, 6, 1, 0, 5, 0, 0), 4, 3,
byrow=T))
covar - apply(dat[,-1],1,paste,collapse='')
sp.dat - split(dat,covar)
y.covar - lapply(sp.dat, [,1)
prop - function(prop) { table(prop)/sum(table(prop)) }
mass.func - lapply(y.covar,prop)
mass.func
$`00`
prop
5
1
$`10`
prop
6
1
$`11`
prop
2 3
0.5 0.5
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