You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: DirectSinglePoint_2DDFT.m
    path of file: ./repos/2D_3D_PolarFourierTransform/MATLAB CodeBase/NVIDIA_2DPolarDFT
    
    the code of the file until where you have to start completion: function [ DFT_Point ] = DirectSinglePoint_2DDFT( inputImage, desiredPoint )
%COMPUTEFORSINGLEPOINT Summary of this function goes here
%   Computing the solution for a single point using row and column
%   differently scaled FrFT
I = inputImage;
[sizeX,sizeY] =  size(I);
N = sizeX -1;      % N is even


    
function [ DFT_Point ] = DirectSinglePoint_2DDFT( inputImage, desiredPoint )
%COMPUTEFORSINGLEPOINT Summary of this function goes here
%   Computing the solution for a single point using row and column
%   differently scaled FrFT
I = inputImage;
[sizeX,sizeY] =  size(I);
N = sizeX -1;      % N is even

xIndex = desiredPoint(1);
yIndex = desiredPoint(2);

lineData = zeros(1, N+1);
y = -N/2: N/2;
Map_y = exp(-1i*2*pi*yIndex*y/(N+1));
Map_x = exp(-1i*2*pi*xIndex*y/(N+1));
                                             % Fully direct computations
for x = 1: N+1     % x
    col = (inputImage(:,x));
    lineData(x) = sum( col' .* Map_y);
end