Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-2000.

Please help me solve this issue.

clc
close all;
clear all;

b01 = 0.011 ; % Density of 1state/1time
b02 = 0.001; % Density of 2state/1time
t = 2000; % Number of time steps
s = 100; % Number of states
b01(t) = b01 + gamma(t);
b02(t) = b02 + gamma(t); % State changing depend on time
b = b01 + b02; % Density of state changing


t/dis;

for j = 1 : s
    
    L(j) = j-1;
    
end

% Determination of startvector
p  = zeros(s,1);
p(1) = 0;
p(2) = 0.0006;
p(3) = 0.0024;
p(4) = 0.0079;
p(5) = 0.0224;
p(6) = 0.0540;
p(7) = 0.1109;
p(8) = 0.1942;
p(9) = 0.2897;
p(10) = 0.3683;
p(11) = 0.3989; 
p(12) = 0.3683;
p(13) = 0.2897;
p(14) = 0.1942;
p(15) = 0.1109;
p(16) = 0.0540;
p(17) = 0.0224;
p(18) = 0.0079;
p(19) = 0.0024;
p(20) = 0.0006;
p(21) = 0;

% Determination of Markov matrix
R = zeros(s,s);

for i = 1 : s-2    
    R(i,i) = 1-b;
    R(i+1,i) = b01;
    R(i+2,i) = b02;    
end   

Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-2000.

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Answer 1

[Torsten]

Setting

b01(t) = b01 + gamma(t);
b02(t) = b02 + gamma(t);
b = b01 + b02; 

makes b01, b02 and b to arrays of size 1x2000 since t = 2000.

So the assignments

R(i,i) = 1-b;
R(i+1,i) = b01;
R(i+2,i) = b02;

don't work.

One remark: Don't name arrays min or max - these are internal MATLAB functions.

[Image Analyst]

Maddy's "Answer" moved here:

so what should be the solution ? @Torsten

[Image Analyst]

We don't know Maddy. What do you want to do? Do you want to take only ONE element of the b array and put it into R? Because you can't take the whole array and stick it into a space meant for just one number.

[Maddy]

Yes I want to take only on element of b array. ( From the b variable:- 0.012000000000000)

@Image Analyst

[Torsten]

And what do you mean by "gamma(t)" ? Do you really mean the gamma function, evaluated at t=2000 ?

[Maddy]

yes @Torsten

[Torsten]

But gamma(2000) = factorial(1999) , in MATLAB =NaN or =Inf.

[Maddy]

I am sorry, I didn't understand. @Torsten

What changes should be done in above given programm to get it run successfully?

Thanks in advacne.

[Torsten]

I mean gamma(2000) = 1*2*3*4*5*6*7*...*1999, thus a too big number for MATLAB to work with.

[Maddy]

ok, I understand but

"Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-2000."

for this issue, what changes should be done?

@Torsten

[Torsten]

You could remove the lines

b01(t) = b01 + gamma(t);
b02(t) = b02 + gamma(t); % State changing depend on time

[Maddy]

t is a time variable. and I need to make this model as time dependent. thats why I used those varibles.

if there is any other possibility for it, please share. (it will be helpful for me to solve it)

@Torsten

[Torsten]

t is not a time variable in your code, but a simple number, namely 2000.

And I don't see where you address b(t), b01(t) or b02(t) in your code except for the two lines I suggested to delete.

Since I don't know what you are trying to do in your code, I can't give further advice - sorry.

[Maddy]

ok

[Maddy]

what should have to do with this issue?

left side is scalar and right side is vector. and becuase of this error coming.

how can i convert vectro into scalar?