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Contour on a contourf plot

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Ron Nativ
Ron Nativ on 25 Jun 2020
Commented: Ron Nativ on 25 Jun 2020
Hello all,
I would like to plot black contour lines of 'Zi2' matrix on a previously plotted contourd plot (swith the matrix Zi2). The problem is that when I use contour, the colours of the contourf plot are being deleted and only the contours are stayed. Can someone help? here is my code:
[c h]= contourf(Xi,Yi,Zi,'linew',1)
clabel(c,h)
hold on;
contour(Xi,Yi,Zi2,'k')
THe plotted figure is attached.
Thanks for your help!
Ron

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Accepted Answer

KSSV
KSSV on 25 Jun 2020
Edited: KSSV on 25 Jun 2020
contourf gives you a colored plot. It fills the contour lines region with colors. To get whay you want use:
c = contour(Xi,Yi,Zi) ;
Now check, c has (x,y) coordinates. Now you can plot them using plot with required color.
plot(c(1,:),c(2,:),'k') ;
Or Striaght away, you can use contour ans specify the color.
contour(Xi,Yi,Zi,'k')

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Ron Nativ
Ron Nativ on 25 Jun 2020
what do you mean?
KSSV
KSSV on 25 Jun 2020
contour(Xi,Yi,Zi,'k')
Ron Nativ
Ron Nativ on 25 Jun 2020
Thanks! but this command runs over the filled contour (contourf) and deltes its colors from some reason

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