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Change color of a specific line in mesh

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I easily plot teh following graph:
mesh(X,Y,F,'FaceColor','none');
No I need to bold, and change the color of just one of lines in the figure! For example in specific value xi=5, we have a plane cutting the surface and it is a line graph. I want to change the color of that specific contour line graph.

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Accepted Answer

Star Strider
Star Strider on 2 Apr 2020
Edited: Star Strider on 2 Apr 2020
No exact solutions without your code and data.
One approach:
xv = -15:0.8:15;
yv = -10:0.8:10;
[X,Y] = ndgrid(xv, yv);
z = @(x,y) sin(x) + cos(y);
figure
mesh(X, Y, z(X,Y))
hold on
line_at_x = 5; % Define ‘x’ Value Of Line
plot3(line_at_x+zeros(size(yv)), yv, z(line_at_x+zeros(size(yv)), yv), '-r','LineWidth',2) % Add Line To ‘mesh’ Plot
hold off
grid on
xlabel('X')
ylabel('Y')
view(10, 10)
EDIT — (2 Apr 2020 at 14:16)
Improved code.

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