lets_plot.scale_x_time

lets_plot.scale_x_time(name=None, breaks=None, labels=None, limits=None, expand=None, na_value=None)

Position scale x for data representing “time delta” values expressed in milliseconds.

Parameters
namestr

The name of the scale - used as the axis label or the legend title. If None, the default, the name of the scale is taken from the first mapping used for that aesthetic.

breakslist

A numeric vector of positions (of ticks).

labelslist of str

A vector of labels (on ticks).

limitslist

A numeric vector of length two providing limits of the scale.

expandlist

A numeric vector of length two giving multiplicative and additive expansion constants. The vector size == 1 => only multiplicative expand (and additive expand by default). Defaults: multiplicative = 0.05, additive = 0.

na_value

Missing values will be replaced with this value.

Returns
FeatureSpec

Scale specification.

Examples

 1import datetime as dt
 2import numpy as np
 3from lets_plot import *
 4LetsPlot.setup_html()
 5n = 31
 6np.random.seed(42)
 7data = {
 8    'time': [dt.timedelta(days=v).total_seconds() * 1000 for v in range(n)],
 9    'value': np.random.normal(loc=-5, scale=6, size=n)
10}
11ggplot(data) + \
12    geom_line(aes('time', 'value')) + \
13    scale_x_time()