How can I resolve this problem?

why am i getting this error?

Index exceeds the number of array elements. Index must not exceed 30.

Error in Inver_theta_ecc (line 23)

maxvalex= ex(idex);

Here is the code that have written-

clc;

clear all;

r=.011;

q=12;

sigma=5;

FD = csvread("forwardtemp.csv");

ID = csvread("Theta_ecc.csv");

pi=3.1415926;

for i=1:1080

for k=1:68

I(k,i)=(FD(k,1)-ID(k,i)).^2;

end

I;

M=sum(I);

Ppost(i)=exp(-M(i)/(2*q^2))/(2*pi*q^2)^6;

end

Ppostmax= max(Ppost);

O= (Ppost./Ppostmax);

ex=-.009:.001:.02;

[maxvalPpost,idex]=max(Ppost);

maxvalex= ex(idex);

theta=0:10:350;

[maxvalPpost,idtheta]=max(Ppost);

maxvaltheta= theta(idtheta);

sum0=0;

for m=1:30

u(m)= ex(m);

sum1=sum0+u(m);

end

Meanex= sum1/30;

errorMAP_ex= 100*(.017-maxvalex)/(.017)

errorMean_ex=100*(.017-Meanex)/(.017)

for m=1:36

u(m)= theta(m);

sum2=sum0+u(m);

end

Meantheta= sum2/36;

errorMAPtheta= 100*(180-maxvaltheta)/(180)

errorMeantheta=100*(180-Meantheta)/(180)

test=csvread('Theta_ecc.csv');

x=test(:,1);

y=test(:,2);

z=test(:,3);

scatter3(x,y,z)

colormap jet

shading interp;

Answer 1

[Torsten]

The arrays "Ppost" and "ex" don't have the same number of elements.

This has the effect that "ex" has less elements than the value of the variable "idex".

Output numel(ex) and idex to see what's going wrong.

The same problem might appear for theta(idtheta).

[Deepesh Kumar Gupta]

@Torsten , thank you . The problem has been resolved.