How to plot peaks on desired location in a 3D plot?

2 views (last 30 days)
There are two vectors that will make an xy-plane. I want to draw a peak pointing in z-direction on a desired location on the xy-plane. In code form it is:
x=linspace(0,180,100);% 1st vector
y=x;% 2nd vector
Now I want to draw a peak of strenght 5 on the intersection of the point (x1,y1)=(30,50).Likewise, I want to draw another peak on the intersection of the point (x2,y2)=(40,120). Further, I want to draw another peak on the intersection of the point (x3,y3)=(60,140). But this whole plot should be a 3D plot as shown in the attached image.
  2 Comments
Sadiq Akbar
Sadiq Akbar on 21 Feb 2022
Thank you for your response. There is no eq. but I want to draw peaks of my desired values. Say for example, one peak should be of height 5, another should be of height 5.5 and another should be of height 7.

Sign in to comment.

Accepted Answer

Star Strider
Star Strider on 21 Feb 2022
[X,Y] = ndgrid(0:300);
C = 50:100:300;
Zf = @(C) exp(-(((X-C).^2)*0.5+((Y-C).^2)));
Z = Zf(C(1)) + Zf(C(2)) + Zf(C(3));
[pks,locs] = findpeaks(Z(:), 'MinPeakHeight',0.5)
pks = 3×1
1 1 1
locs = 3×1
15101 45301 75501
figure
surf(X, Y, Z, 'EdgeColor','none')
hold on
plot3(X(locs), Y(locs), Z(locs), '^r')
hold off
Experiment with your data with this approach.
.
  8 Comments

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by