Vector analysis and bode plots



Hi Ron,

> Wouldn't it possibly be better if:
> -The vector operations were automatically loaded?

Yes, that is a good idea. There is a function setup_autoload for this
purpose. Unfortunately it appears to have a bug which is tickled by
setup_autoload ("vect.mac", div, grad, curl, laplacian);  Rats!

As noted elsewhere, the vect package defines a product function
which interferes with the built-in product. Rats again!

> -They could be completely performed in one command, as opposed to
> three, to get what you really want?

Well, no. Sometimes what you really want is an unevaluated
or partially evaluated form.

> -There was an option to specify the coordinate system?

load (vect_transform); scalefactors (spherical); /* or whatever */
as mentioned elsewhere. The documentation needs to be improved.

> As far as Bode plots go, I usually start from the Laplace transform, yes.

OK, that simplifies the problem a lot. More on this later.

best,
Robert Dodier