Re: [R] removing missing values from a matrix
Thanks! It worked! There is another problem I want to subset the matrix 'red' in following manner: dim(red) 23688 164 a=red[1:23688,1:4] b=red[1:23688,5:8] c=red[1:23688,9:12] .. .. z=red[1:23688,161:164] If there any efficient way to do it? cheers! Amit On Thu, 1 Oct 2009, Amit Kumar wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,] 2 NA 4 9 6 [2,] 5 NA 6 NA 1 [3,] NA 2 11 23 20 [4,] 2 1 21 NA 3 [5,] NA 7 NA 52 NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,] 2 0 4 9 6 [2,] 5 0 6 0 1 [3,] 0 2 11 23 20 [4,] 2 1 21 0 3 [5,] 0 7 0 52 0 Please, help thanks. Amit __ 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-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.
Re: [R] removing missing values from a matrix
Here is one way to do it. BTW 'a'-'z' won't work because there are 41 splits. Use a list instead: red - matrix(seq(23688 * 164), nrow=23688, ncol=164) # create indices indx - split(1:164, cut(1:164, 41)) # now split matrix newMatrix - lapply(indx, function(x) red[, x]) str(newMatrix) List of 41 $ (0.837,4.82]: int [1:23688, 1:4] 1 2 3 4 5 6 7 8 9 10 ... $ (4.82,8.8] : int [1:23688, 1:4] 94753 94754 94755 94756 94757 94758 94759 94760 94761 94762 ... $ (8.8,12.8] : int [1:23688, 1:4] 189505 189506 189507 189508 189509 189510 189511 189512 189513 189514 ... $ (12.8,16.8] : int [1:23688, 1:4] 284257 284258 284259 284260 284261 284262 284263 284264 284265 284266 ... $ (16.8,20.8] : int [1:23688, 1:4] 379009 379010 379011 379012 379013 379014 379015 379016 379017 379018 ... $ (20.8,24.7] : int [1:23688, 1:4] 473761 473762 473763 473764 473765 473766 473767 473768 473769 473770 ... $ (24.7,28.7] : int [1:23688, 1:4] 568513 568514 568515 568516 568517 568518 568519 568520 568521 568522 ... $ (28.7,32.7] : int [1:23688, 1:4] 663265 663266 663267 663268 663269 663270 663271 663272 663273 663274 ... $ (32.7,36.7] : int [1:23688, 1:4] 758017 758018 758019 758020 758021 758022 758023 758024 758025 758026 ... $ (36.7,40.7] : int [1:23688, 1:4] 852769 852770 852771 852772 852773 852774 852775 852776 852777 852778 ... $ (40.7,44.7] : int [1:23688, 1:4] 947521 947522 947523 947524 947525 947526 947527 947528 947529 947530 ... On Thu, Oct 1, 2009 at 6:57 PM, Amit Kumar amitkumartiw...@gmail.com wrote: Thanks! It worked! There is another problem I want to subset the matrix 'red' in following manner: dim(red) 23688 164 a=red[1:23688,1:4] b=red[1:23688,5:8] c=red[1:23688,9:12] .. .. z=red[1:23688,161:164] If there any efficient way to do it? cheers! Amit On Thu, 1 Oct 2009, Amit Kumar wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,] 2 NA 4 9 6 [2,] 5 NA 6 NA 1 [3,] NA 2 11 23 20 [4,] 2 1 21 NA 3 [5,] NA 7 NA 52 NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,] 2 0 4 9 6 [2,] 5 0 6 0 1 [3,] 0 2 11 23 20 [4,] 2 1 21 0 3 [5,] 0 7 0 52 0 Please, help thanks. Amit __ 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-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. -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? __ 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.
Re: [R] removing missing values from a matrix
Thanks! Jim It solved my problem. Best Amit On Fri, Oct 2, 2009 at 11:19 AM, jim holtman jholt...@gmail.com wrote: Here is one way to do it. BTW 'a'-'z' won't work because there are 41 splits. Use a list instead: red - matrix(seq(23688 * 164), nrow=23688, ncol=164) # create indices indx - split(1:164, cut(1:164, 41)) # now split matrix newMatrix - lapply(indx, function(x) red[, x]) str(newMatrix) List of 41 $ (0.837,4.82]: int [1:23688, 1:4] 1 2 3 4 5 6 7 8 9 10 ... $ (4.82,8.8] : int [1:23688, 1:4] 94753 94754 94755 94756 94757 94758 94759 94760 94761 94762 ... $ (8.8,12.8] : int [1:23688, 1:4] 189505 189506 189507 189508 189509 189510 189511 189512 189513 189514 ... $ (12.8,16.8] : int [1:23688, 1:4] 284257 284258 284259 284260 284261 284262 284263 284264 284265 284266 ... $ (16.8,20.8] : int [1:23688, 1:4] 379009 379010 379011 379012 379013 379014 379015 379016 379017 379018 ... $ (20.8,24.7] : int [1:23688, 1:4] 473761 473762 473763 473764 473765 473766 473767 473768 473769 473770 ... $ (24.7,28.7] : int [1:23688, 1:4] 568513 568514 568515 568516 568517 568518 568519 568520 568521 568522 ... $ (28.7,32.7] : int [1:23688, 1:4] 663265 663266 663267 663268 663269 663270 663271 663272 663273 663274 ... $ (32.7,36.7] : int [1:23688, 1:4] 758017 758018 758019 758020 758021 758022 758023 758024 758025 758026 ... $ (36.7,40.7] : int [1:23688, 1:4] 852769 852770 852771 852772 852773 852774 852775 852776 852777 852778 ... $ (40.7,44.7] : int [1:23688, 1:4] 947521 947522 947523 947524 947525 947526 947527 947528 947529 947530 ... On Thu, Oct 1, 2009 at 6:57 PM, Amit Kumar amitkumartiw...@gmail.com wrote: Thanks! It worked! There is another problem I want to subset the matrix 'red' in following manner: dim(red) 23688 164 a=red[1:23688,1:4] b=red[1:23688,5:8] c=red[1:23688,9:12] .. .. z=red[1:23688,161:164] If there any efficient way to do it? cheers! Amit On Thu, 1 Oct 2009, Amit Kumar wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,] 2 NA 4 9 6 [2,] 5 NA 6 NA 1 [3,] NA 2 11 23 20 [4,] 2 1 21 NA 3 [5,] NA 7 NA 52 NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,] 2 0 4 9 6 [2,] 5 0 6 0 1 [3,] 0 2 11 23 20 [4,] 2 1 21 0 3 [5,] 0 7 0 52 0 Please, help thanks. Amit __ 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-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. -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? __ 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.
Re: [R] removing missing values from a matrix
red[is.na(red)] - 0 Sent from my iPhone On Oct 1, 2009, at 7:22 PM, Amit Kumar amitkumartiw...@gmail.com wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,]2 NA4 9 6 [2,]5 NA6 NA 1 [3,] NA2 11 2320 [4,]2 1 21 NA3 [5,] NA7 NA 52NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,]2 0 4 9 6 [2,]5 0 6 0 1 [3,]0 2 11 2320 [4,]2 1 210 3 [5,]0 7 052 0 Please, help thanks. Amit __ 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-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.
Re: [R] removing missing values from a matrix
However, I would hazard the guess that doing this is a (possibly disastrously) bad idea. Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Carvalho, Benilton Sent: Thursday, October 01, 2009 3:34 PM To: Amit Kumar Cc: r-help@r-project.org Subject: Re: [R] removing missing values from a matrix red[is.na(red)] - 0 Sent from my iPhone On Oct 1, 2009, at 7:22 PM, Amit Kumar amitkumartiw...@gmail.com wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,]2 NA4 9 6 [2,]5 NA6 NA 1 [3,] NA2 11 2320 [4,]2 1 21 NA3 [5,] NA7 NA 52NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,]2 0 4 9 6 [2,]5 0 6 0 1 [3,]0 2 11 2320 [4,]2 1 210 3 [5,]0 7 052 0 Please, help thanks. Amit __ 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-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-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.
Re: [R] removing missing values from a matrix
On 2/10/2009, at 12:05 PM, Bert Gunter wrote:
However, I would hazard the guess that doing this is a (possibly
disastrously) bad idea
I heartily second that hazard!!!
cheers,
Rolf Turner
Bert Gunter
Genentech Nonclinical Biostatistics
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
project.org] On
Behalf Of Carvalho, Benilton
Sent: Thursday, October 01, 2009 3:34 PM
To: Amit Kumar
Cc: r-help@r-project.org
Subject: Re: [R] removing missing values from a matrix
red[is.na(red)] - 0
Sent from my iPhone
On Oct 1, 2009, at 7:22 PM, Amit Kumar amitkumartiw...@gmail.com
wrote:
Hi! All,
I am working with a large matrix of dimension 23689 x 162. Some of
the
values of this matrix is missing (NA). And it looks something like
that:
dim(red)
23689 162
red
[,1] [,2] [,3] [,4] [,5]
[1,]2 NA4 9 6
[2,]5 NA6 NA 1
[3,] NA2 11 2320
[4,]2 1 21 NA3
[5,] NA7 NA 52NA
Here I want to convert NA to zero everywhere in the matrix. I do no
want to omit NA using na.omit(red). I want output something like
that:
red
[,1] [,2] [,3] [,4] [,5]
[1,]2 0 4 9 6
[2,]5 0 6 0 1
[3,]0 2 11 2320
[4,]2 1 210 3
[5,]0 7 052 0
Please, help thanks.
Amit
__
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__
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Re: [R] removing missing values from a matrix
I agree with you folks, my assumption is that the user knows what he's doing. Sent from my iPhone On Oct 1, 2009, at 8:33 PM, Rolf Turner r.tur...@auckland.ac.nz wrote: On 2/10/2009, at 12:05 PM, Bert Gunter wrote: However, I would hazard the guess that doing this is a (possibly disastrously) bad idea I heartily second that hazard!!! cheers, Rolf Turner Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On Behalf Of Carvalho, Benilton Sent: Thursday, October 01, 2009 3:34 PM To: Amit Kumar Cc: r-help@r-project.org Subject: Re: [R] removing missing values from a matrix red[is.na(red)] - 0 Sent from my iPhone On Oct 1, 2009, at 7:22 PM, Amit Kumar amitkumartiw...@gmail.com wrote: Hi! All, I am working with a large matrix of dimension 23689 x 162. Some of the values of this matrix is missing (NA). And it looks something like that: dim(red) 23689 162 red [,1] [,2] [,3] [,4] [,5] [1,]2 NA4 9 6 [2,]5 NA6 NA 1 [3,] NA2 11 2320 [4,]2 1 21 NA3 [5,] NA7 NA 52NA Here I want to convert NA to zero everywhere in the matrix. I do no want to omit NA using na.omit(red). I want output something like that: red [,1] [,2] [,3] [,4] [,5] [1,]2 0 4 9 6 [2,]5 0 6 0 1 [3,]0 2 11 2320 [4,]2 1 210 3 [5,]0 7 052 0 Please, help thanks. Amit __ 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-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-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. ## Attention: This e-mail message is privileged and confidential. If you are not the intended recipient please delete the message and notify the sender. Any views or opinions presented are solely those of the author. This e-mail has been scanned and cleared by MailMarshal www.marshalsoftware.com ## __ 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.
Re: [R] removing missing values from a matrix
On 2/10/2009, at 1:03 PM, Carvalho, Benilton wrote:
I agree with you folks, my assumption is that the user knows what he's
doing.
Almost surely a rash assumption! (I.e. except for a set of
users of probability zero.) :-)
cheers,
Rolf Turner
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