for i=1:len j=j+1 if i <=(len-sm) memg(j)=sum(semg(i:i+(sm-1)))/sm; else k=k+1 memg(j)=sum([semg(1:(sm-k))' semg(len-sm:(len-sm)+k-1)'])/sm; end end in matlab

This code snippet represents a loop where i variable is iterated from 1 to len.

• Inside the loop, j is iterated.
• If i is less than or equal to (len - sm), then an average of sm elements is computed from the subset of vector semg starting from index i and ending at index i+(sm-1). This average is stored in memg vector at position j.
• If i is greater than (len - sm), then another variable k is increased and a rolling average of sm elements is computed from the concatenation of two subsets of vector semg. The first subset includes sm-k elements starting from index 1 of semg, and the second subset includes k elements starting from the second-to-last index of semg. The average is stored in memg vector at position j.

Note that the code snippet is incomplete and lacks initialization of some variables in order to work correctly.