# surface fixed point value Z

1 view (last 30 days)
abdullah qasim on 6 Dec 2019
Commented: Star Strider on 7 Dec 2019
Dear
I want to know the value of Z from the surfc function
That is when I give the value of x, y
It gives me the value of z
surfc (x, y, z)

Star Strider on 7 Dec 2019
I do not have the function you used to create the surface in your Question.
Try this with it:
[X,Y] = ndgrid(-2.5:0.1:2.5); % Independent Variable Grid
Z = sin(X).^2 + cos(Y); % Dependent Variable (Use Your Function)
x_room = 1; % X-Room Coordinate
y_room = -1; % Y-Room Coordinate
z_room = griddata(X,Y,Z, x_room, y_room); % Interpolated Z-Room Coordinate
figure
surfc(X, Y, Z)
hold on
plot3(x_room, y_room, z_room, 'rd', 'MarkerFaceColor','r', 'MarkerSize',10)
hold off
grid on
Substitute your function for mine, and choose whatever you want for the coordinates (providing they are within the specified x and y limits).

abdullah qasim on 7 Dec 2019
thank you
abdullah qasim on 7 Dec 2019
you are solve my problem
thank you very much
Star Strider on 7 Dec 2019
As always, my pleasure!

### More Answers (1)

darova on 6 Dec 2019
• I want to know the value of Z from the surfc function
Here is it

#### 1 Comment

abdullah qasim on 7 Dec 2019
I mean when I give any point in the room (x,y) already the vlue of z appere