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Plot streamlines in slice planes

`streamslice(X,Y,Z,U,V,W,startx,starty,startz)`

streamslice(U,V,W,startx,starty,startz)

streamslice(X,Y,U,V)

streamslice(U,V)

streamslice(...,density)

streamslice(...,'* arrowsmode*')

streamslice(...,'

`method`

streamslice(axes_handle,...)

h = streamslice(...)

[vertices arrowvertices] = streamslice(...)

`streamslice(X,Y,Z,U,V,W,startx,starty,startz)`

draws
well-spaced streamlines (with direction arrows) from vector data `U`

,
`V`

, `W`

in axis aligned *x*-,
*y*-, *z*-planes at the points in the vectors
`startx`

, `starty`

, `startz`

.

The arrays `X`

, `Y`

, and `Z`

,
which define the coordinates for `U`

, `V`

,
and `W`

, must be monotonic, but do not need to be
uniformly spaced. `X`

, `Y`

, and `Z`

must
have the same number of elements, as if produced by `meshgrid`

. `U`

, `V`

, `W`

must
be m-by-n-by-p volume arrays.

Do not assume that the flow is parallel to the slice plane.
For example, in a stream slice at a constant `z`

,
the `z`

component of the vector field `W`

is
ignored when you are calculating the streamlines for that plane.

Stream slices are useful for determining where to start streamlines, stream tubes, and stream ribbons.

`streamslice(U,V,W,startx,starty,startz)`

assumes `X`

, `Y`

, and `Z`

are
determined by the expression

[X,Y,Z] = meshgrid(1:n,1:m,1:p)

where `[m,n,p] = size(U)`

.

`streamslice(X,Y,U,V)`

draws
well-spaced streamlines (with direction arrows) from vector volume
data `U`

, `V`

.

The arrays `X`

and `Y`

, which
define the coordinates for `U`

and `V`

,
must be monotonic, but do not need to be uniformly spaced. `X`

and `Y`

must
have the same number of elements, as if produced by `meshgrid`

.

`streamslice(U,V)`

assumes `X`

, `Y`

,
and `Z`

are determined by the expression

[X,Y,Z] = meshgrid(1:n,1:m,1:p)

where `[m,n,p] = size(U)`

.

`streamslice(...,density)`

modifies the automatic spacing of the streamlines. `density`

must
be greater than `0`

. The default value is `1`

;
higher values produce more streamlines on each plane. For example, `2`

produces
approximately twice as many streamlines, while `0.5`

produces
approximately half as many.

`streamslice(...,'`

determines if direction arrows are present or not. * arrowsmode*')

`arrowmode`

can
be`arrows`

— Draw direction arrows on the streamlines (default).`noarrows`

— Do not draw direction arrows.

`streamslice(...,'`

specifies the interpolation method to use. * method*')

`method`

can
be`linear`

— Linear interpolation (default)`cubic`

— Cubic interpolation`nearest`

— Nearest-neighbor interpolation

See `interp3`

for more information on interpolation
methods.

`streamslice(axes_handle,...)`

plots into the axes object with the handle `axes_handle`

instead
of into the current axes object (`gca`

).

`h = streamslice(...)`

returns
a vector of handles to the line objects created.

`[vertices arrowvertices] = streamslice(...)`

returns two cell arrays of vertices for drawing the streamlines and
the arrows. You can pass these values to any of the streamline drawing
functions (`streamline`

, `streamribbon`

, `streamtube`

).

`contourslice`

| `interp2`

| `interp3`

| `meshgrid`

| `slice`

| `streamline`

| `streamribbon`

| `streamtube`

| `volumebounds`

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