Hello Manumua,

maybe this code will help:

% Import radiation pattern data from a file

data = csvread('radiation_pattern.csv');

% Convert the data to a matrix of radiation pattern values

theta = data(:,1);

phi = data(:,2);

pattern = data(:,3);

phase = data(:,4);

% Calculate the complex radiation pattern matrix

F = sqrt(pattern).*exp(1i*phase);

% Calculate the covariance matrix

N = length(theta);

R = (1/N)*F*F';

% Calculate the correlation matrix

P = inv(sqrt(diag(diag(R))))*R*inv(sqrt(diag(diag(R))));

% Calculate the ECC

ECC = sqrt((1-trace(P))/N);

% Display the ECC value

disp(['ECC = ', num2str(ECC)]);

Tq so much sir @miguel Ferrando-Rocher

Fibers reinforcement, Slick coating (anti-friction coating),Fine sand, Super plasticizer these materials made this concrete special. Bendable concrete is composed of all the ingredients of a traditional concrete minus coarse aggregates and is reinforced with polymer fibres. It contains cement, sand, water, fibres, and admixtures. tlcohol-fibres covered with a very thin, slick coating which prevents the fibre from rupturing. Thus ECC deforms much more than a normal concrete but without fracturing. uPolyvinyl Alcohol-fibres covered with a very thin, slick coating which prevents the fibre from rupturing. Thus ECC deforms much more than a normal concrete but without fracturing. The conpressive strength tresting machine is different than the normal compressive testing macine which we use to test the Compressive strength in india so even though you do made a Bendable concrete you will need to have strength testing machine which is a quite difficult.” less

use excel to evaluate ECC formula with S-parameters inputs

All the best,

Dr. Atul Varshney