i have 1x10 vector a
a = [11 22 33 44 55 66 77 88 99 111] each value in a represents index in vector b 1x200.
i want each value in vector a , go index of value in vector b , value of index , 10 items before , 10 items after.
for example, first element in vector a 11, i'll go index 11 in vector b , value of index (11th value) , value of 10 items before (from 1 10) , 10 items after (from 12 21), same every element in a.
is possible without loops?
here on using bsxfun
r = b(bsxfun(@plus, a(:), -10:10)); now row n in r contains elements corresponding element n in a. if want in vector use:
r = reshape(b(bsxfun(@plus, a(:), -10:10)), 1, []); 