How to make a matrix from a for loop

I need to store the values given in a matrix so I can make a graph, but I cant figure it out. Please help! I only want to graph the positive values.

clc

clear

for t = 0:2:100;

h = rocket(t);

if h>=0

disp(h)

end

end

%My function

function [h] = rocket(t)

h = (60+(2.13*(t^2))-(0.0013*(t^4))+(0.000034*(t^4.751)));

end

Answer 1

[Star Strider]

If you need to do it with the loop, this works:

t = 0:2:100;
for k = 1:numel(t)
    h(k) = rocket(t(k));
      if h>=0
            disp(h)
      end  
end

figure
plot(t, h)

Note that you will need to refer to every element of ‘t’ and store every value of ‘h’.

However, using element-wise operations is more efficient:

t = 0:2:100;
h = (60+(2.13*(t.^2))-(0.0013*(t.^4))+(0.000034*(t.^4.751)));

figure
plot(t, h)

See Vectorization (link) for details.

[Angel Hiram Torres Mota]

Perfect, thanks!

[Star Strider]

As always, my pleasure!