Can anyone please help me ? I am not able to find the a value y from x

for i=1:cf_n
    if x1(i,1)<Vrd_cf(i) && x1(i,2)>Vrd_cf(i)
        index2(i) = find((abs(xa(i,:)-Vrd_cf(i)) < 0.001),1,"last");
        Y_point2(i) = ya(index2(i));
        AZ_L(i) = Y_point2(i);
    elseif x1(i,2)<Vrd_cf(i) && x1(i,3)>Vrd_cf(i)
        index2(i) = find((abs(xb(i,:)-Vrd_cf(i)) < 0.001),1,"last");
        Y_point2(i,:) = yb(index2(i));
        AZ_L(i) = Y_point2(i);
    elseif x1(i,3)<Vrd_cf(i) && x1(i,3)>Vrd_cf(i)
        index2(i) = find((abs(xc(i,:)-Vrd_cf(i)) < 0.001),1,"last");
        Y_point2(i,:) = yc(index(i));
        AZ_L(i) = Y_point2(i);
    elseif x1(i,4)<Vrd_cf(i) && x1(i,4)>Vrd_cf(i)
        index2(i) = find((abs(xd(i,:)-Vrd_cf(i)) < 0.001),1,"last");
        Y_point2(i,:) = yd(index(i));
        AZ_L(i) = Y_point2(i);
    elseif x1(i,1)>Vrd_cf(i) 
        AZ_L(i) = 0;
    else
        AZ_L(i) = 0;
    end
end

Here In this code , xa,xb, xc are different equations and these equations is a matrix of 3 rows and 1000 columns

let me take "xa" only , I am just taking an example

xa = [ 1 2 3 .....................; 0.1 0.2 0.3 .....................; .001 .002 .003 .........................]

based on these condition and for loops

i have to get AZ_L which will be [A1;A2:A3], i.e., 3*1 matrix

problems which i am facing is ,

a. Index should be 3*1 but i am geeting 1*3 (the absoulute values of index is correct but vector is wrong )

b. and due to this all this i am getting is 1*3 , and it should be in 3*1

Answer 1

[KSSV]

Did you initialize AZ_L? If not initialize it as

AZ_L = zeros(3,1) ; 

[Devesh Kumar]

Thanks @KSSV ,

One more error in same code I am getting .

Y_point2(i) = ya(index2(i));

the Index which is my i am getting is correct that i verified , equation ya is also correct , Suppose I am geeting index = 50 , and from workspace if I am matching ya(50) it is coming correct , but the Y point my code is calculating is different

my ya is again (3*1000) matrix , can you please tell what error i am doing

[KSSV]

If your ya is 3*1000, why/ how you are indexing it as ya(index) ??? Indexing should be ya(row,index) right?

[Devesh Kumar]

Thanks allot @KSSV , U were a great help