avoiding overlap contour lines in matlab

Dear,

How can I fix overlap contour lines in matlab

figure

contourf(x,y,z)

[darova]

What do you mean? Can you show on your image?

Answer 1

[Farshid Daryabor]

please take a look to the contour lines near the coast, those are overlap. "semilog" function is one solution but it doesn't work for my issue, other one is, >> set(gca, 'Zscale', 'log');

>> set(gca, 'ZTickLabel', get(gca,'ZTick'))

also doesn't work. So I'm looking for a good and an proper solution.

thank you for your suggestion