Re: [R] finding the minimum positive value of some data
Try this: min(diff(sort(x))[diff(sort(x))0]) -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O On 10/09/2007, dxc13 [EMAIL PROTECTED] wrote: useRs, I am looking to find the minimum positive value of some data I have. Currently, I am able to find the minimum of data after I apply some other functions to it: x [1] 1 0 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 sort(x) [1] 0 1 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 diff(sort(x)) [1] 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 min(diff(sort(x))) [1] 0 The minimum is given as zero, which is clearly true, but I am interested in only the positive minimum, which is 1. Can I find this by using only 1 line of code, like I have above? Thanks! dxc13 -- View this message in context: http://www.nabble.com/finding-the-minimum-positive-value-of-some-data-tf4417250.html#a12599319 Sent from the R help mailing list archive at Nabble.com. __ R-help@stat.math.ethz.ch 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. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch 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] finding the minimum positive value of some data
On Mon, 2007-09-10 at 11:20 -0700, dxc13 wrote: useRs, I am looking to find the minimum positive value of some data I have. Currently, I am able to find the minimum of data after I apply some other functions to it: x [1] 1 0 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 sort(x) [1] 0 1 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 diff(sort(x)) [1] 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 min(diff(sort(x))) [1] 0 The minimum is given as zero, which is clearly true, but I am interested in only the positive minimum, which is 1. Can I find this by using only 1 line of code, like I have above? Thanks! dxc13 It's not clear to me which vector you wish to get the minimum for, but the basic premise would be along the lines of: x [1] 1 0 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 min(x[which(x 0)]) [1] 1 or min(which(diff(sort(x)) 0)) [1] 1 See ?which HTH, Marc Schwartz __ R-help@stat.math.ethz.ch 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] finding the minimum positive value of some data
Here are some solutions each of which
1. has only one line,
2. x only occurs once so you can just plug in a complex expression
3. no temporary variables are left
min(sapply(x, function(z) if (z 0) z else Inf))
(function(z) min(ifelse(z 0, z, Inf))) (x)
with(list(z = x), min(z[z 0]))
local({ z - x; min(z[z 0]) })
On 9/10/07, dxc13 [EMAIL PROTECTED] wrote:
useRs,
I am looking to find the minimum positive value of some data I have.
Currently, I am able to find the minimum of data after I apply some other
functions to it:
x
[1] 1 0 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10
sort(x)
[1] 0 1 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10
diff(sort(x))
[1] 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0
min(diff(sort(x)))
[1] 0
The minimum is given as zero, which is clearly true, but I am interested in
only the positive minimum, which is 1. Can I find this by using only 1 line
of code, like I have above? Thanks!
dxc13
--
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and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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Re: [R] finding the minimum positive value of some data
Either min(diff(sort(x))[diff(sort(x))0]) or min(diff(sort(unique(x --- dxc13 [EMAIL PROTECTED] wrote: useRs, I am looking to find the minimum positive value of some data I have. Currently, I am able to find the minimum of data after I apply some other functions to it: x [1] 1 0 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 sort(x) [1] 0 1 1 2 3 3 4 5 5 5 6 7 8 8 9 9 10 10 diff(sort(x)) [1] 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 min(diff(sort(x))) [1] 0 The minimum is given as zero, which is clearly true, but I am interested in only the positive minimum, which is 1. Can I find this by using only 1 line of code, like I have above? Thanks! dxc13 -- View this message in context: http://www.nabble.com/finding-the-minimum-positive-value-of-some-data-tf4417250.html#a12599319 Sent from the R help mailing list archive at Nabble.com. __ R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.
