similar to: nonlinear curve fitting on a torus

Hallo I am going through the paper on Torus randomization by Kyle E. Harms torus randomization is an alternative to Chi-sq test of Independence When the assumption of independence within the groups is violated i want to know that Is there any library regarding torus randomization Someone said me that its in Utility.r but i could not find out this please help me in this regard Shubham Surendra

Hello, I have 2D-data on a torus, i.e. they are scattered within [0:2pi) and are supposed to be periodic with period 2pi. Is there a way in R for a kernel density estimation for such data? I found this article http://www.dmqte.unich.it/personal/dimarzio/density46.pdf but a) I don't fully understand the article (my knowledge in statistics is poor) b) I did not understand which Eq.

Friends-- I'm stumped! Cannot get mount.cifs to work over a tun connection. How would you trouble-shoot this? 1. It cannot be openvpn causing the problem: I can ping across the connection both directions on all machines. 2. It cannot be samba causing the problem: I can mount.cifs the smb shares on the lan (using the identical credentials file) without any issue. 3. Have iptables

Hi all, I am running R 2.5.0 under Windows XP Media Center Edition. Here's a problem that's been stumping me for a few days now, and I can't find anything useful in the archives. I am using voronoi.mosaic (tripack package) to create proximity polygons for a study of vegetation competition and dynamics. The points lists are read in from a file for each plot, then 8 duplicates

Dear Dr. Bivand and R-users, I have a 5 by 5 grid, say, location[1:5,1:5], and I want to know the indices of 8 neighbours of each cell. For example, for location[2,2], its neighbour coordinates are [1,1:3], [2,1], [2,3] and [3,1:3]. Sometimes I also need to remove edge effects (torus = TRUE). I have tried "cell2nb" function in your spdep package. Here's my example: > neigh

Hi all, I'm currently implementing quasi random generation (torus) on R (package randtoolbox available on CRAN). Even if it is not a great idea, I decided to use the machine time to initiate the seed. So when the seed is not specified by the user, the pkg uses the time machine time. Hence the following R code should produce different uniform variates : > for(i in

Dear useRs, I'd like to announce a new package called geozoo, short for geometric zoo. It's a compilation of functions to produce high-dimensional geometric objects, including hypercubes and hyperspheres, Boy's surface, the hyper torus and a selection of polytopes. For a complete list, as well as images and movies, visit

Hi, I am writing a function that includes 'sum' function such as: f<-function(x){ c<-c(-1,0,1) f<-sum(c+x) } expecting f to be -1+x+0+x+1+x=3x. But I found out that f is sum(x). So, f is always a scalar, which means that f(c(0,1)) is not a vector as c(0,3), but 3(0+1)=3. I would like to ask you helping me in solving this problem. I would like to thank you in advance. Sungsu.

Here is the patch with my changes. Most work went into the decoder. I just changed on the encoder if something was nessesary to build the library. You can find the patch here (quite big).. http://torus.untergrund.net/code/theora_mmx_vc2005.diff Please let me know if the encoder works without problems. I just did a very brief testing of it. The decoder has been tested against the test

Dear Helper: Thank you very much for your time on this question. It is a little long and complicated. Generate a clustered pattern in [0; 1]2 as follows: (a) Generate n, say 20, independent cluster centers (which can be called parents) that are distributed i.i.d. uniformly in the unit square; (b) then m,say 100, daughters are assigned i.i.d. uniformly to these parents and such that each

Hi, this reminds me of my troubles of setting up samba BDC at remote company branch. Connection was done by IPSEC tunnel between 2 mikrotik routers. Thing was, ipsec supports only unicast, but not multicast,nor broadcast. Solved it by adding L2TP tunnel that support the above mentioned mechanisms. So ended up with the l2tp (which has very weak encryption and is very old and vulnerable)

Hi, has anyone ever seen implemented in R the following "geodesic" distance between positive definite pxp matrices A and B? d(A,B) = \sum_{i=1}^p (\log \lambda_i)^2 were \lambda is the solution of det(A -\lambda B) = 0 thanks stefano

Hello everyone, I am looking into time series data compression at the moment. The idea is to fit a curve on a time series of n points so that the maximum deviation on any of the points is not greater than a given threshold. In other words, none of the values that the curve takes at the points where the time series is defined, should be "further away" than a certain threshold from the

Generate a clustered pattern in [0; 1]2 as follows: (a) Generate nc, say 20, independent cluster centres (which can be called parents) that are distributed i.i.d. uniformly in the unit square; (b) then n daughters are assigned i.i.d. uniformly to these parents and such that each daughter is located i.i.d. uniformly in a disk of radius r = 0:1 centred at her parent, under the periodic boundary

Hi all, I would like to know a way of calculating the distance between 2 points when I already have the longitude and latitude of the points. For example : Point 1 : 52? 9'54.00"N 4?25'8.40"E Point 2 : 52?27'46.80"N 4?33'18.00"E Distance between point 1 and point in km .... Is there any functions already available for this ? Any help will be much

Dear All, I am trying to send speech across a wireless link. I want to change which speech compression/rate to use according to some algorithm that I have. To be more specific, I have a speech file. In real time, I want to keep changing at which rate speech will be sent next. Let us say, I am considering three rates. I will take the original speech file, compress it using the three rates, which

Hi all, I am sorry if this is a very basic quesion, but I have no experience with analyzing spatial data and could not find the right function/package quickly. Any hints would be much appreciated. I have a matrix of spatial point patterns like the one below and want to find the number of independent components (if that's the right term) in that matrix (or in that image). x=matrix(c(0,1,0,0,0,

Dear R users. I have written my R code. It runs in the version 2.3.1, but not in the version 2.5.1. The error message is shown below. Error in .Fortran("DEPTH", u, v, as.integer(size), as.single(x), as.single(y), : Fortran symbol name "depth" not in load table Could any one advise me what I could do to run my code in 2.5.1? Sincerely,

Hi list, I am using read.csv to read data from csf files, but noticed that the numeric data (those larger than 10 power 9) are rounded to the nearest million (10 power 6). Any solution? Thanks Arvin -- Sent from my mobile device

Hi everybody: Does anyone know how I can change geodesic coordenates into UTM ones? Thanks in advance for your cooperation, Jimmy M. _________________________________________________________________ Bing brings you maps, menus, and reviews organized in one place. a=TEXT_MFESRP_Local_MapsMenu_Resturants_1x1 [[alternative HTML version deleted]]