Subscript indices error, trying to calculate points on data curve

Trying to calculate the midpoints between two adjoined extrema

   tmp_mp = 0.5*(maxima(1:end,:)+minima(1:end-1,:))
   mp(2:k+1,:)= data(tmp_mp);

maxima and minima come from a different function, problem is that the points calculated that way produce non integer indices. How can i fix this?

[Purushottama Rao]

what does the second line in your code means? What do you expect mp to be?

[Guillaume]

To add to Puroshottama question, why do you expect the average of the maxima and minima to be integer?

Answer 1

[Walter Roberson]

   mp(2:k+1,:) = mean([data(maxima(1:end,:)), data(minima(1:end-1,:))]);

If, that is, you want the average of the content, not content at the average location. If you want the content at the average location, you need to define what you want to happen if the sum of the two is odd so the average is an index half way through. Do you want to take the value at floor() of the index? At ceil() of the index? The average of the two?