Help with codes in R

#### Due Wednesday, September 16 2015 at midnight. # Your goal is to write a local-window smoothing function for use on matrices. # The inputs are as follows: # my Matrix: an arbitarily large numeric matrix that is at least 3x3 # smoothingMatrix: an arbitrary 3 x 3 numeric matrix # # The output should be a matrix of the same size as myMatrix: # For each location in my Matrix, the value should be equal to the average value of the # 3x3 window around that location multiplied element-wise by the smoothingMatrix. # So, for example: myMatrix