This example plots the velocity vector cones for the wind data.
Lighting enables the shape of the isosurface to be clearly visible.
The use of perspective projection, camera positioning, and view angle adjustments compose the final view. Create an Isosurface Displaying an isosurface within the rectangular space of the data provides a visual context for the cone plot. Use isosurface and patch to draw an isosurface illustrating where in the rectangular space the wind speed is equal to a particular value. Regions inside the isosurface have higher wind speeds, regions outside the isosurface have lower wind speeds. Use isonormals to compute vertex normals of the isosurface from the volume data rather than calculate the normals from the triangles used to render the isosurface.