I got error in this script
6 views (last 30 days)
Show older comments
clear,clc,close all
datas = readtable('time_vs_load.xlsx','Sheet',2,'NumHeaderLines',1);
time = datas(:,1);
load = datas(:,2);
h = mean(diff(time));
n = length(load);
% Peak Loading Rate Using Central Difference formula
peak_l_r =(-3*load(1) + 4*load(2) - load(3))/(2*h);
for i = 2:n-1
peak_l_r = (load(i+1)-load(i-1))/(2*h);
end
peak_l_r = (load(n-2)-4*load(n-2) + 3*load(n))/(2*h);
peak_l_r = max(peak_l_r)
pear_loading_rate = peak_l_r
% Impulse during the entire timeseries using Trapezoidal methods
impulse = trapz(time,load)
% Results
disp(['Peak loading rate: ', num2str(peak_loading_rate)]);
disp(['Impulse: ', num2str(impulse)]);
0 Comments
Accepted Answer
the cyclist
on 3 Oct 2023
Edited: the cyclist
on 3 Oct 2023
The line
time = datas(:,1);
will give a table with one variable. You need to use curly brackets in access the contents of the table column.
time = datas{:,1};
This code works (after I fixed the typo "pear_loading_rate"):
clear,clc,close all
datas = readtable('time_vs_load.xlsx','Sheet',2,'NumHeaderLines',1);
time = datas{:,1};
load = datas{:,2};
h = mean(diff(time));
n = length(load);
% Peak Loading Rate Using Central Difference formula
peak_l_r =(-3*load(1) + 4*load(2) - load(3))/(2*h);
for i = 2:n-1
peak_l_r = (load(i+1)-load(i-1))/(2*h);
end
peak_l_r = (load(n-2)-4*load(n-2) + 3*load(n))/(2*h);
peak_l_r = max(peak_l_r)
peak_loading_rate = peak_l_r
% Impulse during the entire timeseries using Trapezoidal methods
impulse = trapz(time,load)
% Results
disp(['Peak loading rate: ', num2str(peak_loading_rate)]);
disp(['Impulse: ', num2str(impulse)]);
More Answers (0)
See Also
Categories
Find more on Signal Generation and Preprocessing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!