3D plot with specific values

I need to create a 3D plot with specific x, y and z values.

X values are 1 2 3 4 5 6 7

Y values are 1 2 3 4 5 6 7 8 9

Z are this numbers

The problem is that I need to make plot like this

for example X = 1

Y = 1

Z = 280

or

X = 4

Y = 6

Z = 138

Answer 1

[Walter Roberson]

x = 1:7;
y = 1:9;
z = randi([0 800], length(y), length(x));
surf(x, y, z)

Except you would use your actual Z data.