With what command i can change the width of contours created with SURFC from the beginning?

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Moein 2016-1-19

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https://ww2.mathworks.cn/matlabcentral/answers/264304-with-what-command-i-can-change-the-width-of-contours-created-with-surfc-from-the-beginning

评论： Moein 2016-1-19

Hi friends

I created a 3D figure using SURFC. Now I want to increase the width of contours appeared in figure to 2, but I can not select contours to change their width. How can I plot the figure with wider contours from the beginning (what property or command)?

thank you

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Mike Garrity 2016-1-19

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https://ww2.mathworks.cn/matlabcentral/answers/264304-with-what-command-i-can-change-the-width-of-contours-created-with-surfc-from-the-beginning#answer_206682

在 MATLAB Online 中打开

The property is LineWidth, but things are a little tricky with surfc. The surfc command turns around and calls surf and contour. It is going to pass all of the property/value pairs you give it to the surf command, not the contour command. That means that if we do this:

surfc(peaks,'LineWidth',4)

We'll get wide lines on our surface, rather than on our contour.

The easiest way to set properties on the contour object is to get the return value from surfc.

h = surfc(peaks)

This should say something like this:

h = 
2x1 graphics array:
Surface
Contour

That's saying that h is an array of two graphics objects. The first is the surface and the second is the contour. That means that we can do things like this:

h(2).LineWidth = 4

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Moein 2016-1-19

so funny! new problem!

just one contour (the smallest one) shaped with wider curve.

other ones shaped as before. look at the attached photo.

Moein 2016-1-19

在 MATLAB Online 中打开

at last i found the answer.following code:

T=linspace(-pi/8,pi/8,30);
R=linspace(0,1,30);
[t, r]=meshgrid(T, R);
z=(0.2079921258e1 .* (cos((4 .* t)) .^ 2 .* ((4 .* r .^ 3 - 2 .* r) .^ 2) ./ 0.144e3 + sin((4 .* t)) .^ 2 .* ((r .^ 4 - r .^ 2) .^ 2) ./ (r .^ 2) ./ 0.9e1) ./ (-0.1361305280e0 .* cos((4 .* t)) .* (r .^ 4 - r .^ 2) + 0.1e1) + 0.1e1) ./ (-0.1361305280e0 .* cos((4 .* t)) .* (r .^ 4 - r .^ 2) + 0.1e1);
[x,y,z]=pol2cart(t,r,z);
h=surfc(x,y,z,'FaceColor','interp','FaceLighting','phong');
for i=2:16
set(h(i),'LineWidth',2)
end