Create a vector form a polynomial evaluation

Question

Max 2012-11-17

Hi, I have a polynomials coefficients matrix of W rows in the form f(x)= ax^2 + bx + c

M= [a1 b1 c1 ; a2 b2 c2 ; ... ... ...];

and a column-vector of x

X=[

I solve in this way:

y1M1 = polyval(M ( 1 , : ), X(1,:) );

y2M2 = polyval(M ( 2 , : ), X(2,:) );

y3M3 = polyval(M ( 3 , : ), X(3,:) );

...

example: M1 -> M(1,:) -> (a1 * (x1)^2) + (b1 * x1) + c1

Is possible a combination of commands to obtain a single vector with all the y ?

If I'm not clear, please ask me... thanks

Answer 1

Andrei Bobrov 2012-11-17

编辑：Andrei Bobrov 2012-11-17

y = cellfun(@(x,y)polyval(x,y),num2cell(M,2),num2cell(X));

or

y = arrayfun(@(n)polyval(M(n,:),X(n)),(1:numel(X))');