how to convert a table of coordinates into an images?

I want to convert a table of coordinates(x and y) into an image.how can I do this?

Answer 1

[Image Analyst]

Try this:

grayScaleImage = zeros(ceil(max(y)), ceil(max(x)), 'uint8'); % Initialize to all zeros.
for c = 1 : length(x)
  col = int32(x(c));
  if col < 1
    col = 1;
  end
  for r = 1 : length(y)
    row = int32(y(r));
    if row < 1
      row = 1;
    end
    grayScaleImage(row, col) = 255; % or whatever value you want.
  end
end

Assumes x and y go from 1 to some positive number. If x and y can be negative, you'll have to adjust the code.