Error: Index exceeds the number of array elements

This is the error:

Index exceeds the number of array elements. Index must not

exceed 1.

Note: position1 and velocity1 are both 41x1 double

Error in Lab6Q5 (line 39)

position1(i) ) * (momentum_def(i+1) + momentum_def(i) ) /2;

position           =xlsread(filename,'No Cylinder','D2:D42');
position1          =normalize(position);
velocity           =xlsread(filename,'No Cylinder','E2:E42');
velocity1          =normalize(velocity);

total_momentum_def = 0;
momentum_def = 0;
for i = 1: size(position1,1)-1
    total_momentum_def = total_momentum_def + ( position1(i+1) - ...
        position1(i) ) * (momentum_def(i+1) + momentum_def(i) ) /2;
end

Answer 1

[madhan ravi]

momentum_def was defined as a scalar before the loop but you are trying to access the second element in the first interation of the loop momentum_def(i + 1)

[Walter Roberson]

And since it is a scalar the next iteration momentum_def(2) would certainly not be defined, since nothing in the code is growing momentum_def