How to make a matrix from a for loop
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Angel Hiram Torres Mota
on 21 Jun 2019
Commented: Star Strider
on 21 Jun 2019
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
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Accepted Answer
Star Strider
on 21 Jun 2019
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)
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