??? Index exceeds matrix dimensions.

Hi could anyone tell me what is wrong with my script?

I'm not bvvery good at Matlab so i apologize if this is obvious.

for i=(PRINT_TIME:PRINT_TIME:TOTAL_TIME); for j=(DELTA_TIME:DELTA_TIME:PRINT_TIME);

c=1; x(c)=2*(F*c)+(1-2*F)*c; for c=(2:N-1);

    c>=(2);
    c<=(N-1);
    c = F*(c(c+1)+c(c-1))+(1-2*F)*c;
    end;

c=N; x1=x; x1(N)=2*F(c(N-1)+B*FLUID_TEMP)+(1-2*F-2*B*F)*c;

end;

time_new=TIME+PRINT_TIME; TIME=time_new; fprintf ('T = %d seconds \n', T); disp(y) end;

[Dr. Seis]

1. What variable is the error associated with?

2. Where do you define "T" above?

Answer 1

[Dr. Seis]

You are not creating any x beyond x(1). In your inner "for" loop you have:

c = F*(c(c+1)+c(c-1))+(1-2*F)*c;

Which probably should be:

x(c) = F*(c(c+1)+c(c-1))+(1-2*F)*c;

The following are doing nothing and can be deleted:

c>=(2);
c<=(N-1);

Unless you meant to set up and "if" statement?