Error "Index in position 2 exceeds array bounds (must not exceed 1)."

Hi,

Could you help me in this problem??

"Index in position 2 exceeds array bounds (must not exceed 1)."

Error in

xa(k,t)= xa(k,t-1)+(vxai(k,t)/3600)*At;

My code is:

number_of_runs=100;

xa=ones(number_of_runs,1000);

ya=ones(number_of_runs,1000);

xa(1)=90; ya(1)=70;

xb(1)=50; yb(1)=20;

At=1;

va=500;

vxai=ones(number_of_runs,1000);

vyai=ones(number_of_runs,1000);

d=ones(number_of_runs,999);

for k=1:number_of_runs

i1=normrnd(0,25);

vxai(k,1)=(va+i1)

vyai(k,1)=(va+i1)

for t=2:1000

xa(k,t)= xa(k,t-1)+(vxai(k,t)/3600)*At;

ya(k,t)= ya(k,t-1)+(vyai(k,t)/3600)*At;

end

d(k,t-1)=xa(k,t-1)-ya(k,t-1)

end

Thanks in advance!!

Answer 1

[KALYAN ACHARJYA]

Problem due to typo error (Note MATLAB is case sensitive). The preallocated variable named as Vxai, Vyai (upper case V), later used vxai, vyai (lower case) within the loop. More "At", not defined.

Please modify the code as suggested, there will be no coding error.

[Andrea Mira]

Hi, @KALYAN ACHARJYA,

Thank you for the answer

I made the mistakes when copying the script code to this website

In the MATLAB script I have corrected these mistakes but it still not working.

MATLAB shows the same error

Error "Index in position 2 exceeds array bounds (must not exceed 1)."

If you could give me any orientation I will be grateful

[KALYAN ACHARJYA]

What you are trying to do, I have no idea, just I have rectifed the error only. Please define the "At" with typical value.

number_of_runs=100;
xa=ones(number_of_runs,1000);
ya=ones(number_of_runs,1000);
xa(1)=90; ya(1)=70;
xb(1)=50; yb(1)=20;
va=500;
Vxai=ones(number_of_runs,1000);
Vyai=ones(number_of_runs,1000);
At=????; % Define it
d=zeros(100,999);
for k=1:number_of_runs    
   i1=normrnd(0,25); 
   Vxai(k,1)=(va+i1);
   Vyai(k,1)=(va+i1);
   for t=2:1000 
      xa(k,t)= xa(k,t-1)+(Vxai(k,t)/3600)*At; 
      ya(k,t)= ya(k,t-1)+(Vyai(k,t)/3600)*At; 
   end
   d(k,t-1)=sqrt((xa(k,t-1)-ya(k,t-1)).^2);  
end