MATLAB: How to store iteration while loop result

storewhile loop

Hi guys, I need help.
how can I store iteration result?
while abs(xj-x0)>=error
disp('*****************')
x0=xj %new value of x0 to generate new xj in next iteration
y=subs(poly2sym(f),x,x0);
fx=[y]
Upper=subs(poly2sym(firstDiff),x,x0);
Lower=subs(poly2sym(secondDiff),x,x0);
xj=x0-(Upper/Lower)
I need to store two vectors, because I will create a plot using these two vector as input
  1. vector of x0 values
  2. vector of fx values

Best Answer

all_x0 = x0;
all_fx = fx;   %you should check that I used the right variable
counter = 1;
while abs(xj-x0)>=error
    disp('*****************')
    x0=xj %new value of x0 to generate new xj in next iteration
    y=subs(poly2sym(f),x,x0);
    fx=[y]
    counter = counter + 1;
    all_x0(counter) = x0;
    all_fx(counter) = fx;
    Upper=subs(poly2sym(firstDiff),x,x0);
    Lower=subs(poly2sym(secondDiff),x,x0);
    xj=x0-(Upper/Lower)
end
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