When working with 3D graphs in MATLAB, being able to adjust the view angle can greatly enhance the visual experience and provide better insight into the data. Here's how you can easily change the view angle of a 3D graph in MATLAB.

MATLAB provides a convenient way to change the view angle of a 3D graph using the 'view' function. The 'view' function takes three arguments: azimuth, elevation, and distance.

1. Azimuth: This parameter specifies the angle in the xy plane from the positive x-axis to the projection of the line of sight onto the xy plane. Changing the azimuth angle allows you to rotate the graph around the z-axis.

2. Elevation: This parameter specifies the angle from the xy plane to the line of sight. Adjusting the elevation angle changes the perspective of the graph in the xy plane.

3. Distance: This parameter specifies the distance from the camera position to the origin. Changing the distance allows you to zoom in or out of the graph.

To change the view angle of a 3D graph, simply use the following command:

```matlab

view(azimuth, elevation)

```

where 'azimuth' and 'elevation' are the angles at which you want to view the graph. You can also include the 'distance' parameter if you want to adjust the distance from the camera to the origin.

Here's an example of how to change the view angle of a 3D graph in MATLAB:

```matlab

% Create sample data

[X,Y,Z] = meshgrid(-2:.2:2, -2:.2:2, -2:.2:2);

V = X.*exp(-X.^2 - Y.^2 - Z.^2);

% Create 3D surface plot

surf(X,Y,Z,V)

% Change view angle

view(-30, 45) % Set azimuth to -30 degrees and elevation to 45 degrees

```

By using the 'view' function, you can easily customize the view angle of your 3D graphs in MATLAB to best suit your visualization needs. Whether you want to rotate the graph, change the perspective, or zoom in/out, the 'view' function offers the flexibility to do so.

In conclusion, knowing how to change the view angle of a 3D graph in MATLAB is essential for creating effective and insightful visualizations. By using the 'view' function with the appropriate azimuth and elevation angles, you can easily customize the view angle to best represent your data.