similar to: Points on a Sphere -- How to visualize them?

Dear All, I implemented an algorithm for (uniform) random rotations. In order to test it, I can apply it to a unit vector (0,0,1) in Cartesian coordinates. The result is supposed to be a set of random, uniformly distributed, points on a sphere (not the point of the algorithm, but a way to test it). This is what the points look like when I plot them, but other then eyeballing them, can anyone

Dear All, I need to plot some points on the surface of a sphere, but I am not sure about how to proceed to achieve this in R (or if it is suitable for this at all). In any case, I am not looking for really fancy visualizations; for instance you can consider the images between formulae 5 and 6 at http://bit.ly/hOgK9h Any suggestion is appreciated. Cheers Lorenzo

Hello veryone, I am interested in the diffusion of particles inside a sphere, and its release through a small pore on the sphere surface. Unfortunately, I have not found the way to do this in R. Could you help me? Thank very much in advance for your help

Dear R list I am using rgl.sphere to visualize scatter plot data in three dimensional space. Thanks to the rgl library, I can easily find out the data point that I am interested in. However, as I can not see the labels of each data point directly in RGL window, I usually look for the values of x, y, z axis to find out the label (or line number of the data point). Is there any way that I

Hi, I'm new to R (and math ;) Would somebody please be so kind as to direct me in plotting a 3D sphere? I tried something in the lines of: #### y <- x <- seq(-pi, pi, length=pi*10) f <- function(x,y) { z <- sqrt(pi - x^2 - y^2) #z[is.na(z)] <- 0 z } z <- outer(x, y, f) persp(x, y, z, theta = 120, phi = 30) #### I've also tried: .... make.surface.grid(...) ..

I have spatial data on a sphere (the Earth) for which I would like to run an gls model assuming that the errors are autcorrelated, i.e. including a corSpatial correlation in the model specification. In this case the distance metric should be calculated on the sphere, therefore metric = "euclidean" in (for example) corSpher would be incorrect. I would be grateful for help on how to

There's Renka's STRIPACK, and TRIPACK, respectively, ACM TOMS Algorithms 772 and 751, and there's the R package "deldir" which does the Delaunay for a plane, but does anyone have or know of the tessellation in R for a sphere? Also, is there a standard indexing scheme for Delaunay facets, and perhaps of edges in such facets? I'd expect that to be a publication reference,

Not an R question directly, but has anyone got a method for placing a moderately large number of (near) equi-spaced points on a sphere? I have a nasty feeling platonic solids are needed for exact solutions and I'm thinking of samplings involving around 200 - 1000 regularly-spaced points, Thanks, Richard Rowe Richard Rowe Senior Lecturer Department of Zoology and Tropical Ecology, James

Dear R helpers, I'm trying to write a numerical scheme for a boundary integral method to solve an electromagnetic problem. This requires the computation of the distance between points at the surface of an object (a sphere, in my example). Here is my code, > require(rgl) > r<-1 > size<-10 > theta<-seq(0,2*pi,length=size*2) > phi<-seq(0,pi,length=size) > pc

Hi Gluster Gurus, I'm using a gluster volume as home for our users. The volume is replica 3, running on CentOS 7, gluster version 3.10 (3.10.6-1.el7.x86_64). Clients are running Fedora 26 and also gluster 3.10 (3.10.6-3.fc26.x86_64). During the data backup I got an I/O error on one file. Manually checking for this file on a client confirms this: ls -l

Hi Richard, Thanks for the informations. As you said there is gfid mismatch for the file. On brick-1 & brick-2 the gfids are same & on brick-3 the gfid is different. This is not considered as split-brain because we have two good copies here. Gluster 3.10 does not have a method to resolve this situation other than the manual intervention [1]. Basically what you need to do is remove the

Thanks for this report. This week many of the developers are at Gluster Summit in Prague, will be checking this and respond next week. Hope that's fine. Thanks, Amar On 25-Oct-2017 3:07 PM, "Richard Neuboeck" <hawk at tbi.univie.ac.at> wrote: > Hi Gluster Gurus, > > I'm using a gluster volume as home for our users. The volume is > replica 3, running on

Galera I go direct to the subject. I negotiate it I am the following one, I costumava to play a certain called MMORPG Sphere ( http://www.spherebr.com.br/ or http://www.uox.com.br/ ). It happens that I installed the game for the Wine without no problem and until the window of loguin of the game it appears equal in windows. But in the hour of logar my account, it appears Connecting

I am trying to figure out how to use rgl package for animation. It appears that this is done using the play3d() function. Below I have some sample code that plots a 3D path and puts a sphere at the point farthest from the origin (which in this case also appears to be at the end of the path). What I would like to do is animate the movement of another sphere along the length of the path

Could you share the following information: 1. gluster --version 2. output of gluster volume status 3. glusterd log and all brick log files from the node where bricks didn't come up. On Wed, Mar 21, 2018 at 12:35 PM, Richard Neuboeck <hawk at tbi.univie.ac.at> wrote: > Hi all, > > our systems have suffered a host failure in a replica three setup. > The host needed a

Hi all, our systems have suffered a host failure in a replica three setup. The host needed a complete reinstall. I followed the RH guide to 'replace a host with the same hostname' (https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3/html/administration_guide/sect-replacing_hosts). The machine has the same OS (CentOS 7). The new machine got a minor version number newer

Dears, I've been learning biplot (Gabriel, 1971) and I found the function 'biplot', inside of the package 'stats', useful but, a bit limited. So, I'm thinking to start a colaborative package to enhance this methods to other multivariate methods. In this way, I would like to start it, making public a new function (biplot.pca, still in development, but running) that make

Dear List, I don't get scatter3d to color the sheres according to the '|' argument. library(car) scatter3d(prestige ~ income + education|type, data=Prestige) The spheres on my screen are all colored the same and they are not conditional on Prestige$type. On the other hand: Fit3d and Ellipse3d are colored according to the group argument. rgl_0.92.879 car_2.0-12 R version 2.15.0

Hello: Can you tell me if there's a simple way to generate in R random vectors on the unit sphere in R^{n}? Additionally, are there references for this question? Thanks in advance. Tom -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or

Dear Group, I have the following data matrix which is a timeseries. > dput(tData) structure(list(A = c(0.2, 0.13, 0.05, 0.1, 0.02, 0.18, 0.09, 0.06, 0.13), B = c(0.15, 0.06, 0.09, 0.02, 0.03, 0.12, 0.01, 0.15, 0.06), C = c(-0.1, 0, -0.07, -0.06, -0.05, -0.05, -0.06, -0.08, -0.07), D = c(-0.15, -0.05, -0.1, -0.03, -0.13, -0.04, -0.1, -0.04, -0.15), E = c(-0.17, -0.16, -0.08, -0.07, -0.09,