1) This is Mac and menu are different (unfortunately help for Mac was not written, but just copied from MSW) Maple12 > Preferences > Interface (thanks, Interface was a key word) 2) Yes 3) On Mac it is possible: View > Open Tab in a new Window Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

1) This is Mac and menu are different (unfortunately help for Mac was not written, but just copied from MSW) Maple12 > Preferences > Interface (thanks, Interface was a key word) 2) Yes 3) On Mac it is possible: View > Open Tab in a new Window Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

With the kind help of Roman Plch I managed to use JavaView engine as an external exporter which after a couple of conversions became u3d usable in pdf. However it is a real shame that such long way is needed and that Maple Help even does not mention it(pdf is the main Mathematics e-publishing format and actually the only format which should be used) Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thank you, but it still almost the same: I tried javaview 3.95 001, Full or for Maple It complains Warning: loading failed, file = /Users/ivrii/Desktop/plot2.wrl at jv.loader.PjImportModel.load(PjImportModel.java) Actually officially JV supports only vrml 2 but Maple uses vrml 1 (and it looks like most of the free soft depreciates it). OK, Blender can import vrml and save it as ply or obj but Meshlab does not like both (reports an error) while Javaview rejects ply but reads obj. However JV cannot export to ply Deep Exploration is not only expensive commercial but runs on Windows only Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Blender 2.46 for python-2.5 MacOS intel failed to import any wrl file. Any file I tried to export to ply could not be open by Meshlab 1.1.1 (error). Blender itself importing its own exports produced something very different from the original. Looks like pre-alpha version for me Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Maple 12 have no brought no new 3d export formats; vrml remains the only choice and AFAIK there is no free multiplatform tool to convert it to u3d. Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

So far it looks like Maple (11) can export only into wrl files while Mathematica (6) provides export to .ply, .stl, .obj, .3ds, wrl formats. Meshlab 1.1.1 (free and multiplatform) can convert .ply, .stl, .obj to .u3d and using LaTeX with movie15 package I can embed u3d models into pdf. Currently Meshlab does not accept .wrl as an import. Definitely .u3d export directly would be the most welcome, but .ply is the best alternative, and .stl, .obj are viable alternative as well Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

I found where to put restrictions. Case is closed :-) Thanks! Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

I found where to put restrictions. Case is closed :-) Thanks! Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thanks, Doug, now it works but the scene is defined according to the final value of the parameter and for other values it becomes cut-off. My attempts to replace [x(t),y(t)] by [x(t)=0..2, y(t)] resulted in an error despite that help lists such scenes. Actually this are trajectories of the Hamiltonian p_1^2 + (p_2 - q_1^2/2)^2 with a fixed quasimomentum p_1=k Victor Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thanks, Doug, now it works but the scene is defined according to the final value of the parameter and for other values it becomes cut-off. My attempts to replace [x(t),y(t)] by [x(t)=0..2, y(t)] resulted in an error despite that help lists such scenes. Actually this are trajectories of the Hamiltonian p_1^2 + (p_2 - q_1^2/2)^2 with a fixed quasimomentum p_1=k Victor Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thanks, but something went wrong with my particular example: while > with(plots): with(DEtools): k:=0.6; phaseportrait( [(D(x))(t) = z(t), (D(z))(t) = 2*x(t)*(k-x(t)^2), (D(y))(t) = k-x(t)^2], [x(t), y(t), z(t)], t = -6 .. 6, [[x(0) = (1+k)^(1/2), y(0) = 0, z(0) = 0]], stepsize = 0.1, scene = ([x(t), y(t)]), scaling = constrained, linecolor = blue); works (and I can plug any k > -1), > with(plots); with(DEtools); animate( phaseportrait, ( [(D(x))(t) = z(t), (D(z))(t) = 2*x(t)*(k-x(t)^2), (D(y))(t) = k-x(t)^2], [x(t), y(t), z(t)], t = -6 .. 6, [[x(0) = (1+k)^(1/2), y(0) = 0, z(0) = 0]], stepsize = 0.1, scene = ([x(t), y(t)]), scaling = constrained, linecolor = blue), k=0..2); returns an error Error, (in animate) [x(t), y(t), z(t)] is an invalid animation range. Is it because this is actually 3D equation? ================================== Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thanks, but something went wrong with my particular example: while > with(plots): with(DEtools): k:=0.6; phaseportrait( [(D(x))(t) = z(t), (D(z))(t) = 2*x(t)*(k-x(t)^2), (D(y))(t) = k-x(t)^2], [x(t), y(t), z(t)], t = -6 .. 6, [[x(0) = (1+k)^(1/2), y(0) = 0, z(0) = 0]], stepsize = 0.1, scene = ([x(t), y(t)]), scaling = constrained, linecolor = blue); works (and I can plug any k > -1), > with(plots); with(DEtools); animate( phaseportrait, ( [(D(x))(t) = z(t), (D(z))(t) = 2*x(t)*(k-x(t)^2), (D(y))(t) = k-x(t)^2], [x(t), y(t), z(t)], t = -6 .. 6, [[x(0) = (1+k)^(1/2), y(0) = 0, z(0) = 0]], stepsize = 0.1, scene = ([x(t), y(t)]), scaling = constrained, linecolor = blue), k=0..2); returns an error Error, (in animate) [x(t), y(t), z(t)] is an invalid animation range. Is it because this is actually 3D equation? ================================== Victor Ivrii, Department of Mathematics, University of Toronto http://www.math.toronto.edu/ivrii

Thanks, it works. Victor Ivrii, Department of Mathematics, University of Toronto

Thanks, it works. Victor Ivrii, Department of Mathematics, University of Toronto