Oblique coordinates from cartesian coordinates

*To*: mathgroup at smc.vnet.net*Subject*: [mg119404] Oblique coordinates from cartesian coordinates*From*: Francisco Miguel Morales Sanchez <fmiguel.morales at gm.uca.es>*Date*: Thu, 2 Jun 2011 07:15:34 -0400 (EDT)

Hello: 3D plots and contourplots are generated authomatically in a cartesian base with x and y axes having 90 degrees between them but I would like this axis to appear as if it was 60=BA. I found that a 3D object can be presented with a different "aparent angle" by using oblique coordinates with "Affine" or "Geometric Transformation", for example: gr = {Cuboid[], AbsolutePointSize[10], Opacity[1], {Magenta, Point[{0, 0, 0}]}, {Green, Point[{1, 1, 1}]}}; Graphics3D[{{Opacity[.35], Blue, gr}, GeometricTransformation[{Opacity[.85], Red, gr}, {{{.8, .5, .5}, {0, .8, .5}, {0, 0, .8}}, {.5, .5, 0}}]}, Boxed -> False] MY QUESTION IS: Why can I not make the same procedure for a Plot3D or a ContourPlot? Following the same way I get not output. This is an example of waht I say: A=Plot3D[Sin[x + y^2], {x, 0, 1}, {y, 0, 1}]; Graphics3D[{GeometricTransformation[A, {{{.8, .5, .5}, {0, .8, .5}, {0, 0, .8}}, {.5, .5, 0}}]}] I WOULD BE VERY GRATEFUL IF YOU COULD HELP ME!, THANKS IN ADVANCE. Paco