sampling_systematic

sampling_systematic(n)

Return a subset where items are selected at a regular interval.

Parameters:

nint

Number of items to return.

Returns:

FeatureSpec

Systematic sample specification.

Examples

import numpy as np
from lets_plot import *
LetsPlot.setup_html()
n = 1000
x = np.arange(n)
np.random.seed(12)
y = np.random.normal(0, 1, n)
ggplot({'x': x, 'y': y}, aes(x='x', y='y')) + \
    geom_line(sampling=sampling_systematic(50))