Hello, I’m not very familiar with MATLAB and not a good mathematician either. I hope you could help me with contour plots. Let’s say my 3 variables are x=Age (31x1), y=Estimated cranial volume (31x1), and z=Estimated IQ score (31x1). Each variable has only 1 value per participant. When I define my variables and enter the line ‘contour(x,y,z)’, I get a message that my ‘z must be at least 2x2 matrix’. How should I convert my z variable so that it complies to this rule? Thank you.