Number of line for fcontour

If somebody can tell me how to increase number of lines for fcontour plot I would be much grateful. Thanks in advance.

Answer 1

[Star Strider]

A somewhat different approach —

syms x y 
z(x,y) = exp(-(x-5)^2) + cos(y)

z(x, y) = 

figure
hfc = fcontour(z, [0 10  -2*pi 2*pi]);
colormap(turbo)
title('Default Levels')

figure
hfc = fcontour(z, [0 10  -2*pi 2*pi]);
Lvls = hfc.LevelList;
hfc.LevelList = linspace(min(Lvls), max(Lvls), 5*numel(Lvls));
colormap(turbo)
title('Increased Countours, Same Range')

.

Answer 2

[Image Analyst]

Look at the max and min of your surface, then compute the 'LevelStep' using the number of contours you want. Something like (untested)

numContours = 10;
levelStep = (max(z(:)) - min(z(:))) / numContours;
fcontour(z, 'LevelStep', levelStep);

[David Togonidze]

It gives me the error about levelStep not being a double which is logical since I have symbolic expressions in "Z". Shoud have mentioned that in the original question.