Unable to store matrix array in for loop

t = linspace(10^-4,10^12,17)

for i = 1:17

m = inv((At * Cd * A) + (t(i) * Ht * H)) * At * Cd * do

end

Solution for m is a 20 by 1 matrix

but im having issues storing each iteration of the solution as an individual set (i.e m1 , m2, m3 ....m17)

it just lumps all the solutions as m

making it unable for me to call out a solution of choice

[Stephen23]

I suspect that you actually want to generate logarithmically spaced t values:

>> t = logspace(-4,12,17)
t =
  0.0001  0.001  0.01  0.1  1  10  100  1000  10000  1e+005  1e+006  1e+007  1e+008  1e+009  1e+010  1e+011  1e+012

Compared to the rather strange linearly spaced values that you have now:

>> t = linspace(1e-4,1e12,17)
t =
  0.0001  6.25e+010  1.25e+011  1.875e+011  2.5e+011  3.125e+011  3.75e+011  4.375e+011  5e+011  5.625e+011  6.25e+011  6.875e+011  7.5e+011  8.125e+011  8.75e+011  9.375e+011  1e+012

[Prince Igweze]

t is just a range of values between 10^-4 and 10^12

[Prince Igweze]

that seems to make more sense.

Stephen, any ideas on how I can store each solution in the loop as M(1), M(2) .....M(17)

rather than M.

Answer 1

[Bhaskar R]

t = linspace(10^-4,10^12,17);
m = zeros(length(t),1);    % initialize with zeros
for i = 1:17
    m(i) = inv((At * Cd * A) + (t(i) * Ht * H)) * At * Cd * do;    % store values for each iteration
end

[Prince Igweze]

its showing this when i run

Unable to perform assignment because the left and right sides have a different number of elements.

Answer 2

[randerss simil]

t = linspace(10^-4,10^12,17)
for i = 1:17
    m{i} = inv((At * Cd * A) + (t(i) * Ht * H)) * At * Cd * do ; % use cell array 
end

Use cell array as above