MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Change of Basis function


Hi,

and you don't like to tell us *what* your inner 
product is ?
*and* you are unable to compute

InnerProduct[vector,#] & /@ 
{basisUnitVector1,basisUnitVector2,...}

very strange.
Regards
  Jens

"David Boily" <dsboily at fastmail.ca> schrieb im 
Newsbeitrag news:ecmh90$9iq$1 at smc.vnet.net...
|I would like to know if there is a function 
capable of giving as output
| the representation of a vector in a given basis. 
For example:
|
| FunctionX[{1,2,3}, {{1,2,0},{0,1,0},{0,0,1}}]
|
| (where the first argument is the vector and the 
second the basis)
|
| would yield
|
| {1,0,3}
|
| and
|
| FunctionX[f x1 - b x2 + x3 - x2, {x1,x2,x3}]
|
| would yield
|
| {f, -b-1, 1}
|
| I'm more interested in the second case, 
obviously, because the first one
| can be achieved with a simple matrix 
multiplication.
|
| David Boily
| Center for Intelligent Machines
| Mcgill University
| 



  • Prev by Date: Re: Symmetric polynomials
  • Next by Date: Re: this expression doesn't do what I expected - what's wrong?
  • Previous by thread: Re: Change of Basis function
  • Next by thread: RE: Change of Basis function