[R] 3D plot not working as desired!

From: <kim83_at_uiuc.edu>
Date: Tue 08 Mar 2005 - 18:50:04 EST


Hello R-users!

I am trying to plot 3 vectors (x,y,z) of observations generated by mvrnorm in library(MASS).

I tried plot3d in library(djmrgl) and scatterplot3d. But these program gives x,y,z axis which do not intersect at the origin (0,0,0).

I searched through all the graphics related packages for R like xgobi, ggobi, grid and more. Quite confusing which one to choose.

Would anyone recommend any way to plot the 3-dimensional randomly generated numbers? It would be very nice if it can create 95% confidence region ellisoid around the observations, just like the 95% confidence ellipse around the bivariate normal random numbers.

Thanks in advance!

Sangwhan Kim
Department of Economics
University of Illinois at Urbana-Champaign



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