search for: closest

Hi I have a table with ID (1 to 183) and Location (144 to -22). My problem is that I want to select the 10 ID's that are closest in Location to ID 1, ID 2 and so on. Also, some ID have the same Location. Say, if 11 ID's are closest to ID 100 I want to randomly choose one of the ID's to select 10 ID's total. Thank you -- View this message in context: http://www.nabble.com/Selecting-closest-values-tp22647126p...

I have a long list of numbers [3.4,5.4,3.67,....], and I basically want to find the index of the number closest to this number that I have, let's say 5.43. How would I do this without writing a for loop (I have to do this many times for several lists)? Is there a "lookup" function in R? Thanks! -- View this message in context: http://www.nabble.com/Find-the-closest-value-in-a-list-or-matrix-...

Dear All, would you please provide your thoughts on the following: let us say I have: a <-c(1,5,8,15,32,69) b <-c(8.5,33) and I would like to extract from "a" the two values that are closest to the values in "b", where the length of this vectors may change but b will allways be shorter than "a". So at the end based on this example I should have the result "f" as f <-c(8,32) appreciate the help, Andras

...L, 1761L, 1872L, 174L, 2040L, 552L, 1403L, 6381L, 1649L, 4136L, 4415L, 10650L, 12111L, 4397L, 9593L, 7040L, 3888L, 8340L, 11475L, 11413L, 3985L, 1077L, 7723L, 1392L, 4099L, 4386L, 4737L, 1731L, 9246L, 7729L, 4264L, 6880L), .Dim = c(25L, 2L)) How can i encircle (locate), on the plotting window, the closest 3 point around any selected point. More precisely, for x=2372 and y=6381, which are the 3 closest points? Thanks in advance.. Elisa [[alternative HTML version deleted]]

...k the problem is rather how to select them then how to implement the R code. Consider the following data frame: df <- data.frame(ID = c(1,2,3,4,5,6,7,8,9,10), value = c(34,12,23,25,34,42,48,29,30,27)) What I want to achieve is to select 7 rows (values) so that the mean value of those rows are closest to the value of 35 and the remaining 3 rows (values) are closest to 45. However, each value is only allowed to be sampled once! Any ideas, how to achieve that? Cheers -- View this message in context: http://r.789695.n4.nabble.com/select-rows-by-criteria-tp4434812p4434812.html Sent from the...

...r cases and then take an average of those to infill. I realize there are many methods for imputing data. I'm not well versed on any in particular (expect regression and cluster analysis). That said, given that I have an extensive data set already with most variables populated, I can find the closest observations in N-dimentional space and impute the value that way - by focusing on the best matches. If there are any other thoughts on how to do this (relatively easily), I'm open to suggestions and being educated. Thanks, Danny > From: Art Kendall <Art at DrKendall.org> > Date...

Hello! I am trying to round the number always up - i.e., whatever the positive number is, I would like it to round it to the closest 10 that is higher than this number, the closest 100 that is higher than this number, etc. For example: x<-3241.388 signif(x,1) rounds to the closest thousand, i.e., to 3,000, but I'd like to get 4,000 instead. signif(x,2) rounds to the closest hundred, i.e., to 3,200, but I'd like to g...

Good afternoon Running R2.10.0 on Windows I have a data frame that includes (among much else) a factor (In_2006) and a continuous variable (math_3_4). I would like to find the 2 cases for In_2006 = 0 that are closest to each case where In_2006 = 1. My data looks like In_2006 math_3_4 0 55.1 1 51.6 1 18.1 1 26.6 1 14.1 1 9.6 1 48.9 1 12.9 0 63.0 0 51.8 etc. for several hundre...

...ppreciate some help. I want to avoid outer() to limit memory problems for very large n. Let x = real vector of length n y = real vector of length n w = real vector of length m, m typically less than n/2 but can be > n z = real vector of length m For w[i], i=1,,,m, find the value of x that is closest to w[i]. In the case of ties, select one (optimally at random or just take the first match). Let z[i] = value of y corresponding to the closest x. If there is a Fortran or C function (builtin or otherwise) that does much of the work, all the better. Thanks, Frank -- Frank E Harrell Jr...

The original problem I posed was Let x = real vector of length n y = real vector of length n w = real vector of length m, m typically less than n/2 but can be > n z = real vector of length m For w[i], i=1,,,m, find the value of x that is closest to w[i]. In the case of ties, select one (optimally at random or just take the first match). Let z[i] = value of y corresponding to the closest x. I received several helpful replies. Peter Dalgaard suggested the use of approx. approx always amazes me. To return the index of the closest matc...

Hi, Do CentOS 7 installs not automatically use a closest mirror for installing like Fedora does, or is that due to the way I'm starting the install (virt-install)? Background: I'm trying to find the best way to do installs using basic local media (network install, but *without* the need to download the squashfs.img for every install) but withou...

Dear R-users, i have a simple problem maybe, but i don't see the solution. i want to find the entry-wise closest element of an vector compared with another. ind1<-c(1,4,10) ind2<-c(3,5,11) for (i in length(ind2):1) { print(which.min(abs(ind1-ind2[i]))) } for ind2[3] it should be ind1[3] 10, for ind2[2] it should be ind1[2] 4 and for ind2[1] it should be ind1[1] 1. but with the for-loop above i ge...

Hi, I have to match names where names can be recorded with errors or additions. Now I am searching for a string search function which returns always the "closest" match. E.g. searching for "Washington" it should return only Washington but not Washington, D.C. But it also could be that the list contains only "Hamburg" but the record I am searching for is "Hamburg OTM" and then we still want to find "Hamburg". Or...

Hello, I have this command: x.axis <- seq(from=0.5, to=4.5, length.out=13112) How can I which of the x.axis components is the closest to a given value, for example 3.2? Best, Dani -- Daniel Valverde Saub? Grup de Biologia Molecular de Llevats Facultat de Veterin?ria de la Universitat Aut?noma de Barcelona Edifici V, Campus UAB 08193 Cerdanyola del Vall?s- SPAIN Centro de Investigaci?n Biom?dica en Red en Bioingenier?a, Biom...

I am trying to do a search for a crazy problem. Anyways, the search can only contain one word and the database it''s searching contains one word per row. Basically if someone tries to search for a word I want to find the closest match. Ex: If someone types "cat" and "cat" is not in my database, but "bat" is, how could I select bat? Also, if someone types "cat" and I dont have anything remotely close to that then I want to return nothing. Lastly, these are not all english words...

Hello, What would be in R the closest match to a c-struct? e.g. data.frame requires all elements to be of the same length ... or is there a way to circumvent this? TIA, Best regards, Giovanni

Hi, I want to take a SRPM that is available for various versions of Fedora and rebuild it on a CentOS 4 system. Which release of Fedora is the closest to CentOS 4? In other words, which would be the best FC to take the SRPM for? Cheers Tony -- Tony Mountifield Work: tony at softins.co.uk - http://www.softins.co.uk Play: tony at mountifield.org - http://tony.mountifield.org

...s I want Samba to be more fault tolerant than pointing it at one DC - when there are many to choose from. It looks like Samba is just doing a DNS lookup on the realm name and binding to the top DC in the list? Active Directory does allow you to define sites and Windows boxes figure out where their closest DC is from that information - but it looks like Samba can not? Is that correct, or is there something else I can do? Resolving usernames/groups is pretty dire due to this - a Samba server in Sweden is currently using a DC in Beijing for example. This is Samba-3.0.23d under CentOS4.4 -- Cheers...

On 06/04/2017 10:29 AM, Jos Vos wrote: > Hi, > > Do CentOS 7 installs not automatically use a closest mirror for > installing like Fedora does, or is that due to the way I'm starting > the install (virt-install)? > > Background: > > I'm trying to find the best way to do installs using basic local media > (network install, but *without* the need to download the squashf...

I've only begun investigating R as a substitute for SPSS. I have a need to identify for each CASE the closest (or most similar) 5 other CASES (not including itself as it is automatically the closest). I have a fairly large matrix (50000 cases by 50 vars). In SPSS, I can use Correlate > Distances to generate a matrix of similarity, but only on a small sample. The entire matrix can not be processed a...