Why rotatemesh is in red?

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@StuartBruff wrote:

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@-MFra- wrote:

Hello everyone,
I'm trying to use the "rotate" function obtained from the "plottool" collection downloaded from this community some time ago. I would like to know why the "rotatemesh" function is marked in red as it is evident from the following figure, while the function "rotate" which utilizes it, doesn't give error?:

 

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Because rotate operates upon the whole 3D mesh (3x(BoundxBound)) whereas rotatemesh only operates upon an individual mesh (eg, x-y or z-x (BoundxBound)).  Try vectorizing the rotatemesh expression in Frotate.

 

Stuart 

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Arrgggh!  Ignore the above.  That's not what's happening. 

A 3D-mesh is a 3x{mxn} nested array.  rotatemesh is designed to rotate a 3D-mesh.

Createmesh returns a nested 3D-mesh. In your instance, Createmesh returns a 1x1 array containing a 3D-mesh.   To handle nested 3D-meshes, you should use rotate, which is designed to rotate a set of 3D-meshes.   rotate will also handle a 3D-mesh and should, therefore, be used in preference to rotatemesh.

The reason vectorize works on rotatemesh(Fmesh, ...) is because the sole element of Fmesh is a 3D-mesh.   If you'd written rotatemesh(Fmesh₀,...) that would have worked as well.

Apologies for the confusion.  I'm going to blame my responding just after I'd woken up and not having had a cup of tea. Either that or I'm just an idiot ... ☹️ 

Stuart