problems with scalefactors and spherical coordinates

I tried the scalefactors command without doing the load(vect), and
Maxima did not complain. This is a new command for me, so I really
do not know anything about it. It is good one to know though since I
am teaching Calculus III this semester. 
  BTW, one of the problems I did in class a few days ago was to graph 
	r=2*sin(theta) - in your notation. The plot with Maxima (on my
	office computer) came out much more clear than the one we did with
	Derive in the classroom. I used rectangular coordinates. Now, I
	tried to do that same plot using the spherical coordinates, but
	the plot I got is different (not correct). Any hint as to how to
	use the scalefactors correctly?
	
Milan  Lukic

Charles James Leonardo Quarra Cappiello [18/09/03 14:59 -0400]:
> 
> 
> Hi,
> 
> 
>  im doing the following:
> 
> (C1) load(vect);
> (D1) 	    /home/charles//share/maxima/5.9.0/share/vector/vect.mac
> (C2) 
> scalefactors([[r*sin(theta)*cos(phi),r*sin(theta)*sin(phi),r*cos(theta)],r,phi,theta]);
> 
> Error: MACSYMA-TOP-LEVEL [or a callee] requires more than one argument.
> Fast links are on: do (si::use-fast-links nil) for debugging
> Error signalled by MACSYMA-TOP-LEVEL.
> Broken at MACSYMA-TOP-LEVEL.  Type :H for Help.
> MAXIMA>>
> 
> 
> why scalefactors is going wrong like this? i have restarted maxima before 
> trying this
> 
> 
> P.D.: AFAIK the way to do calculations and 3dplots in spherical coordinates 
> requires the vect package, is that correct?
> 
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