pept.processing.VectorGrid2D

class pept.processing.VectorGrid2D(xpixels: Pixels, ypixels: Pixels)

Bases: object

Object produced by VectorField2D storing 2 grids of voxels xpixels, ypixels, for example velocity vector fields / quiver plots.

Examples

Compute a velocity vector field in the Y and Z dimensions (velocities were first calculated using pept.tracking.Velocity):

>>> from pept.processing import *
>>> trajectories = pept.PointData(...)
>>> field = VectorField2D(0.6, ["vy", "vz"], "yz").fit(trajectories)
>>> field
VectorGrid2D(xpixels, ypixels)

Create a quiver plot using Plotly (may be a bit slow):

>>> scaling = 16
>>> fig = field.quiver(scaling)
>>> fig.show()

Create a 2D vector field (needs PyVista):

>>> scaling = 16
>>> fig = field.vectors(scaling)
>>> fig.plot(cmap = "magma")

__init__(xpixels: Pixels, ypixels: Pixels)

Methods

__init__(xpixels, ypixels)
quiver([factor])
vectors([factor])

vectors(factor=1)

quiver(factor=1)