back to the Apple iBooks Author / iPad option with 3D MATLAB graphs.
A) I am still wondering why the function VRML in MATLAB has been discontinued. It still exists whereas it does not appear in Help. Instead The MathWorks promotes the Simulink 3D Animation Toolbox, which I got, but I never found a simple solution to export a surface plot as VRML file. Any suggestions on that? VRML unfortunately is very limited. For instance it can't export RGB images projected on a 3D surface, which would be very useful in earth sciences.
B) I haven't found a shortcut in the recipe posted in my first mail. You can import the VRML/WLR files into Blender but then the colors get lots. You can't open the COLLADA/DAE files from Blender in iBooks Author, no idea why. Is there another way to export rotatable 3D graphs from MATLAB except for the LaTex recipes that are in the file exchange? I never got these functions running.
B) While the 3D graphs look fine in MATLAB, they get lots of holes in MeshLab. You can use the Fill Hole routine in MeshLab but this is a very time consuming task, you have to select each hole individually, and the software usually crashes after pressing Fill. The 3D graph isn't very large, 120 x 120 pixels, but even this very small surface plot has holes after exporting it from MATLAB. It's not a MeshLab problem because the holes are also there if you import the graph into Blender.
C) Actually 3DS works better than U3D in step 3 in my first post.
D) Most importantly, the 3D graph in iBooks Author is shifted slightly to the bottom of the 3D box. The lower part of the graph is cut off while rotating the graph.
I haven't been able to solve these problems so far.