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3-D quiver or velocity plot

`quiver3(x,y,z,u,v,w)quiver3(z,u,v,w)quiver3(...,scale)quiver3(...,LineSpec)quiver3(...,LineSpec,'filled')quiver3(...,'PropertyName',PropertyValue,...)quiver3(axes_handle,...)h = quiver3(...)`

A three-dimensional quiver plot displays vectors with components `(u,v,w)` at
the points `(x,y,z)`, where `u,v,w,x,y,` and `z` all
have real (non-complex) values.

`quiver3(x,y,z,u,v,w)` plots
vectors with directions determined by components `(u`,`v`,`w)` at
points determined by `(x`,`y`,`z)`.
The matrices `x`,`y`,`z`,`u`,`v`,`w` must
all be the same size and contain the corresponding position and vector
components.

`quiver3(z,u,v,w)` plots
vectors with directions determined by components `(u`,`v`,`w)` at
equally spaced points along the surface `z`. For
each vector `(u(i,j),v(i,j),w(i,j))`, the column
index `j` determines the *x*-value
of the point on the surface, the row index `i` determines
the *y*-value, and `z(i,j)` determines
the *z*-value. That is, `quiver3` locates
the vector at the point on the surface `(j,i,z(i,j))`.
The `quiver3` function automatically scales the vectors
to prevent overlapping based on the distance between them.

`quiver3(...,scale)` automatically
scales the vectors to prevent them from overlapping, and then multiplies
them by `scale`. `scale` `=` `2` doubles
their relative length, and `scale` `=` `0.5` halves
them. Use `scale = 0` to plot the vectors without
the automatic scaling.

`quiver3(...,LineSpec)`
specifies line style, marker symbol, and color using any valid `LineSpec`. `quiver3` draws
the markers at the origin of the vectors.

`quiver3(...,LineSpec,'filled')`
fills markers specified by `LineSpec`.

`quiver3(...,'PropertyName',PropertyValue,...)` specifies
property name and property value pairs for the quivergroup object
the function creates.

`quiver3(axes_handle,...)`
plots into the axes with the handle `axes_handle` instead
of into the current axes (`gca`).

`h = quiver3(...)`
returns a handle to the quivergroup object.

`axis` | `contour` | `LineSpec` | `plot` | `plot3` | `quiver` | `surfnorm` | `view`

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