search for: sphere

...quot;AQ2G4304F" desc = "Serverrack 2 UPS 1" (For some reason the serial number of the first one would not work without a .* at the end... although "1A1F29014" is exactly the content of ups.serial output of upsc). If I start NUT I get this in logs: Mar 19 16:14:44 sphere newhidups[4898]: Startup successful Mar 19 16:15:03 sphere newhidups[5232]: Startup successful Mar 19 16:15:03 sphere upsd[5233]: Connected to UPS [sr1ups1]: newhidups-auto Mar 19 16:15:03 sphere upsd[5233]: Connected to UPS [sr2ups1]: newhidups-auto Mar 19 16:15:08 sphere upsd[5290]: Startup succe...

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(...) .. persp( as.sur...

Dear All, I need to do something simple: I have a set of points which are located on the surface of a sphere (let's say the centre of the sphere is in (0,0,0) and the sphere has radius R=1). How can I visualize them? I am looking for something like this http://bit.ly/PnSerU with the addition of some spots that represent some points I want to plot on the sphere surface. Any suggestion (and in par...

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 i686-pc-linux-gnu (32-bit) I checked this under windows and: here they are colored acc...

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 Cook University Townsville, Queensl...

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

...y, and z axes of the bounding box # clear3d Logical to clear or not a 3D graphical representation of # biplot before to make a new (TRUE is the default). # simple.axes Whether to draw simple axes (TRUE or FALSE). # box Whether to draw a box (the default is FALSE). # spheres Logical to represent objects as spheres (the default is FALSE). # sphere.factor Relative size factor of spheres representing points; the # default size is dependent on the scale of observations. # col.obj Color of spheres or labels of objects. # col.var Color of lin...

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 la...

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) cor...

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 suggest a test to ensure that I am really generating uniform random points on a sphere? Many thanks Lorenzo

...), ncol=3, byrow=T) return(Rc%*%Rb%*%Ra) } require(rgl) ## create one ellipsoid at a given location, with axes a,b,c and Euler angles phi, theta, psi rgl.ellipsoid <- function (x=0,y=0,z=0, a = 1,b=1,c=1, phi=0,theta=0,psi=0, subdivide = 3, smooth = TRUE, ...) { sphere <- subdivision3d(cube3d(...), subdivide) class(sphere) <- c("mesh3d","shape3d") norm <- sqrt(sphere$vb[1, ]^2 + sphere$vb[2, ]^2 + sphere$vb[3, ]^2) for (i in 1:3) sphere$vb[i, ] <- sphere$vb[i, ]/norm sphere$vb[4, ] <- 1 sphere$normal...

...y, and z axes of the bounding box. # clear3d Logical to clear or not a 3d graphical representation of # biplot before to make a new (TRUE is the default). # simple.axes Whether to draw simple axes (TRUE or FALSE). # box Whether to draw a box (the default is FALSE). # spheres Logical to represent objects as spheres (FALSE is the default). # sphere.factor Relative size factor of sphere representing points; the # default size is dependent on the scale of observations. # col.obj Color of spheres or labels of objects. # col.var Color of line...

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 L...

Dear List, I have the code below adapted from the lattice-package examples to draw two spheres. I would now like to give both different surface colors, e.g. one red and one blue. ## 3-D surface parametrized on a 2-D grid n <- 10 tx <- matrix(seq(-pi, pi, length.out = 2*n), 2*n, n) ty <- matrix(seq(-pi, pi, length.out = n) / 2, 2*n, n, byrow = T) xx &lt...

...? recovery.baklz4 Out of curiosity I checked all the bricks for this file. It's present there. Making a checksum shows that the file is different on one of the three replica servers. Querying healing information shows that the file should be healed: # gluster volume heal home info Brick sphere-six:/srv/gluster_home/brick /romanoch/.mozilla/firefox/vzzqqxrm.default-1396429081309/sessionstore-backups/recovery.baklz4 Status: Connected Number of entries: 1 Brick sphere-five:/srv/gluster_home/brick /romanoch/.mozilla/firefox/vzzqqxrm.default-1396429081309/sessionstore-backups/recovery.baklz...

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 = as.matrix(rbind(expand.grid(theta,phi))) > x<- r* sin(pc[,2]) * cos(pc[,1]) > y<- r* sin(pc[,2]) * sin(pc[,1]) >...

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, or even textbook. TIA, - Jan [[alternative HTML version deleted]]

...d here is the other information: > > # gluster volume info home > > Volume Name: home > Type: Replicate > Volume ID: fe6218ae-f46b-42b3-a467-5fc6a36ad48a > Status: Started > Snapshot Count: 1 > Number of Bricks: 1 x 3 = 3 > Transport-type: tcp > Bricks: > Brick1: sphere-six:/srv/gluster_home/brick > Brick2: sphere-five:/srv/gluster_home/brick > Brick3: sphere-four:/srv/gluster_home/brick > Options Reconfigured: > features.barrier: disable > cluster.quorum-type: auto > cluster.server-quorum-type: server > nfs.disable: on > performance.readdi...

...of curiosity I checked all the bricks for this file. It's > present there. Making a checksum shows that the file is different on > one of the three replica servers. > > Querying healing information shows that the file should be healed: > # gluster volume heal home info > Brick sphere-six:/srv/gluster_home/brick > /romanoch/.mozilla/firefox/vzzqqxrm.default-1396429081309/sessionstore- > backups/recovery.baklz4 > > Status: Connected > Number of entries: 1 > > Brick sphere-five:/srv/gluster_home/brick > /romanoch/.mozilla/firefox/vzzqqxrm.default-1396429081...

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 brasil1.nikita.ru... and later the messa...