title: Change axis Label in contourf
body: <p>I have solved a Differential equation(Iteratively, not using a matlab solver) in a rectangular Domain of Length [0 1]x[0 2] and stored the values in Matlab Array.
  I now want to plot it in contourf but the axis labels are still the matrix index (i,j). How do I change them to 0,1 and 0,2 .... tried already axis( ). </p>