Scatter plot - MATLAB scatter - MathWorks Create a scatter plot and fill in the markers. scatter fills each marker using the color of the marker edge. x = linspace (0,3*pi,200); y = cos (x) + rand (1,200); sz = 25; c = linspace (1,10,length (x)); scatter (x,y,sz,c, 'filled') Specify Marker Symbol Create vectors x and y as sine and cosine values with random noise.