search for: scale3d

I'm using the command below on an open3d() object to create a shaded cube. Changes to myScalingFactor do not effect changes in the size of the cube. What is the correct approach? Mark shade3d(translate3d(cube3d(identityMatrix() * myScalingFactor),-6,1,-1),col="green", alpha = 0.2) -- Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry Indiana University School of Medicine

...inder3d(rbind( c(start), # start c(0,0,1)), # end radius = 0.2, e1=cbind(0, 0, 1), e2=cbind(1, 0, 0), sides=10 ) # ... rotate cylinder horizontally and scale it len=sqrt(sum(abs(end)*abs(end))) c=scale3d(c,0.1,0.1,len) c=rotate3d(c,-(pi/2),0,1,0) # ... rotation angles theta = atan2(end[2],end[1]) # angle in yx-plane for Z-achses rotation phi = atan2(end[3],sqrt(end[1]^2+end[1]^2)) # angle in zx for Y-achses rotation # ... rotation c=rotate3d(c,phi,0,1,0) # Y-achses rotation c=rotate3d(c, -theta...

...ubdivide) 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$normals <- sphere$vb result <- scale3d(sphere, a,b,c) rotM <- euler(phi,theta,psi) result <- rotate3d(result,matrix=rotM) result <- translate3d(result, x,y,z) invisible(result) } ## loop over the specification of a cluster rgl.ellipsoids <- function(positions, sizes, angles,...){ N <- NROW(positions)...

Hi, I am looking for a package which allows me to draw arrows (cylinders with cones on them, basically) in 3d images produced with rgl. Is such a thing available? I did notice the 'compositions' package, which contains 'arrow3D'. However, it relies on 'tensorA', which fails to install on my machine with the error message copied below. If anyone can help me fix this

Hi all, I am considering writing a 3D visualisation package for R. Purposes: - Visualise 3 dimension data - Manipulate the data or series or any other object with the mouse as in any 3D software (3D Studio Max, Lightwave...) - Eventually display more than just 3D objects. Justification: - It's always interesting to plot data before performing any analysis - Manipulating (rotating,