ribbon

PolyDataFilters.ribbon(width=None, scalars=None, angle=0.0, factor=2.0, normal=None, tcoords=False, preference='points', progress_bar=False)

Create a ribbon of the lines in this dataset.

Note

If there are no lines in the input dataset, then the output will be an empty pyvista.PolyData mesh.

Parameters:

widthfloat, optional

Set the “half” width of the ribbon. If the width is allowed to vary, this is the minimum width. The default is 10% the length.

scalarsstr, optional

String name of the scalars array to use to vary the ribbon width. This is only used if a scalars array is specified.

anglefloat, optional

Angle in degrees of the offset angle of the ribbon from the line normal. The default is 0.0.

factorfloat, optional

Set the maximum ribbon width in terms of a multiple of the minimum width. The default is 2.0.

normaltuple(float), optional

Normal to use as default.

tcoordsbool, str, optional

If True, generate texture coordinates along the ribbon. This can also be specified to generate the texture coordinates with either 'length' or 'normalized'.

preferencestr, optional

The field preference when searching for the scalars array by name.

progress_barbool, optional

Display a progress bar to indicate progress.

Returns:

pyvista.PolyData

Ribbon mesh. Empty if there are no lines in the input dataset.

Examples

Convert a line to a ribbon and plot it.

>>> import numpy as np
>>> import pyvista
>>> n = 1000
>>> theta = np.linspace(-10 * np.pi, 10 * np.pi, n)
>>> z = np.linspace(-2, 2, n)
>>> r = z**2 + 1
>>> x = r * np.sin(theta)
>>> y = r * np.cos(theta)
>>> points = np.column_stack((x, y, z))
>>> pdata = pyvista.PolyData(points)
>>> pdata.lines = np.hstack((n, range(n)))
>>> pdata['distance'] = range(n)
>>> ribbon = pdata.ribbon(width=0.2)
>>> ribbon.plot(show_scalar_bar=False)