pmesh.lic module¶

pmesh.lic.lic(vectors, kernel, length, ds, resampler=None, texture=None, normalize=True)[source]¶

Line Intergral Convolution for visualizing vector fields.

The vectors must be normalized to norm of 1.0 for LIC to give a reasonable image.

The image looks bad if the vectors are noisy.

Parameters:

vectors : list of RealField: vx, vy, vz, … must be normalized.
kernel : function kernel(s): the line integral kernel function. s is the line coordinate variable between -1 and 1.
length : float: the length of the line, in pixels.
ds : float: step size in the line integration. in pixels.
resampler: string, ResamplerWindow: the resampler window. See pmesh.window module for a full list. if None, use pm’s default sampler, pm.resampler, where pm is infered from the first vector.
texture : RealField, or None: the texture to use. If None, a default gaussian texture is used.
normalize : bool: True if normalize the vectors to 1.0

Returns: