minpack_lsquares

This wasn't documented in the "help" file, and wasn't shown in the example code for minpack_lsquares: I had to add load("minpack")$

But when I did that, I got an error message which I do not understand.  PNG screenshot attached.


--- On Sat, 5/28/11, Ether Jones <maxima at etherjones.us> wrote:

> From: Ether Jones <maxima at etherjones.us>
> Subject: Re: [Maxima] minpack_lsquares
> To: "maxima mailing list" <maxima at math.utexas.edu>
> Date: Saturday, May 28, 2011, 6:34 PM
> 
> Here's the complete script:
> 
> kill(all)$
> 
> L: 30$ W:24$
> 
> s1: 0.66146087960253$
> s2: 0.96813559654012$
> s3: 0.74997966956141$
> s4: 0.25042656950073$
> 
> a1: 1.183014673400058$
> a2: 0.6847789579122$
> a3: -0.016464555187806$
> a4: -0.049325965088199$
> 
> R: sqrt(L^2+W^2)$
> Lr: L/R$? Wr: W/R$
> 
> FWD: Y$? STR: X$? RCW: Z$
> A: STR-RCW*(Lr)$
> B: STR+RCW*(Lr)$
> C: FWD-RCW*(Wr)$
> D: FWD+RCW*(Wr)$
> 
> s1f: sqrt(B^2+C^2)$
> s2f: sqrt(B^2+D^2)$
> s3f: sqrt(A^2+D^2)$
> s4f: sqrt(A^2+C^2)$
> a1f: atan2(B,C)$
> a2f: atan2(B,D)$
> a3f: atan2(A,D)$
> a4f: atan2(A,C)$
> 
> f1: define(s1(FWD,STR,RCW),s1f-s1);
> f2: define(s2(FWD,STR,RCW),s2f-s2);
> f3: define(s3(FWD,STR,RCW),s3f-s3);
> f4: define(s4(FWD,STR,RCW),s4f-s4);
> f5: define(a1(FWD,STR,RCW),a1f-a1);
> f6: define(a2(FWD,STR,RCW),a2f-a2);
> f7: define(a3(FWD,STR,RCW),a3f-a3);
> f8: define(a4(FWD,STR,RCW),a4f-a4);
> 
> function_list: [f1,f2,f3,f4,f5,f6,f7,f8];
> 
> minpack_lsquares(function_list,[FWD,STR,RCW],[0.5,0.5,0.5]);
> 
> 
> 
> --- On Sat, 5/28/11, Ether Jones <maxima at etherjones.us>
> wrote:
> 
> > From: Ether Jones <maxima at etherjones.us>
> > Subject: minpack_lsquares
> > To: "maxima mailing list" <maxima at math.utexas.edu>
> > Date: Saturday, May 28, 2011, 6:25 PM
> > 
> > Hello.
> > 
> > See attached screenshot (PNG file).
> > 
> > Am I doing something wrong, or is it just too complex
> for
> > Maxima?
> > 
> > I know the answer should be [0.5, 0.3, 0.4]
> > 
> > Thank you.
> > 
> > 
> > -----Inline Attachment Follows-----
> > 
> > _______________________________________________
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> > Maxima at math.utexas.edu
> > http://www.math.utexas.edu/mailman/listinfo/maxima
> > 
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