MATLAB: Convert this ploygon from 2d to 3d graph

Question

hi

i have this graph

xv = [1,2,3,4.8,8,10,10,5];
yv = [0,4,7.5,7.9,9,4,0,0];
patch(xv,yv,'b');
ylim([-5, 15]);
xlim([0, 15]);

i want to convert this to 3d with z=2 for all point of x-y coordinate

thank in advance regards

Answer 1

zv(1:length(xv))=2;
 patch(xv,yv,zv,'b');