converting a binary vector to polynomial form?

If i have a binary vector:

           x = 1 0 0 1 0 1

how can i convert this to polynomial form:

           y = x.^5+x.^2+1

regards.

Answer 1

[Walter Roberson]

If you have the Symbolic Toolbox, use poly2sym

[Malik]

i dont have it. isnt there an alternate to this.

[Walter Roberson]

What output form are you looking for? A function handle? A string written to a file? Or you have a binary polynomial vector P and a matrix of values x and you want y to be the polynomial implied by P evaluated over x?

[Malik]

i have a binary vector representing the 1 and 0 coefficients of a polynomial. i want to convert it to polynomial form, so that its easy for me to see the positions at which i have 1 as the co-efficient.

[Walter Roberson]

You could just

find(fliplr(x)) - 1

which would, in this example, output 5 2 0

Anyhow, so you are looking for a string output ?