`streamline`

Draws streamlines from precomputed vertices.

Syntax

streamline(verts)

Draws the lines in the cell array verts.

streamline(X, Y, U, V, startx, starty)

Computes 2-D streamlines and draws them.

h = streamline(___)

Also returns the line handles.

Description

The function only draws; computing the paths is the job of stream2 and stream3. Splitting the two steps lets you inspect or filter the vertices before plotting.

Input arguments

verts: Cell array of vertex matrices from stream2 or stream3.
X, Y, U, V, startx, starty: Grid, vector field and starting points, as in stream2.

Output arguments

h: Handles of the line objects, one per streamline.

Example

Two streamlines of a rotation field

[x, y] = meshgrid(-2:0.5:2);
u = -y;
v = x;
verts = stream2(x, y, u, v, [1 0.5], [0 0]);
h = streamline(verts);
axis equal
disp(numel(h))

Output

streamline