lets_plot.scale_fill_grey

lets_plot.scale_fill_grey(start=None, end=None, direction=None, name=None, breaks=None, labels=None, limits=None, na_value=None, guide=None, trans=None, format=None)

Sequential grey color scale for fill aesthetic. The palette is computed using HSV (hue, saturation, value) color model.

Parameters
  • start (float) – Gray value at low end of palette in range [0, 1].

  • end (float) – Gray value at high end of palette in range [0, 1].

  • name (str) – 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.

  • breaks (list) – A numeric vector of positions (of ticks).

  • labels (list of str) – A vector of labels (on ticks).

  • limits (list) – Continuous scale: a numeric vector of length two providing limits of the scale. Discrete scale: a vector specifying the data range for the scale and the default order of their display in guides.

  • na_value – Missing values will be replaced with this value.

  • guide – Guide to use for this scale. It can either be a string (‘colorbar’, ‘legend’) or a call to a guide function (guide_colorbar(), guide_legend()) specifying additional arguments. ‘none’ will hide the guide.

  • trans ({‘identity’, ‘log10’, ‘sqrt’, ‘reverse’}) – Name of built-in transformation.

  • format (str) – Defines the format for labels on the scale. The syntax resembles Python’s: ‘.2f’ -> ‘12.45’ ‘Num {}’ -> ‘Num 12.456789’ ‘TTL: {.2f}$’ -> ‘TTL: 12.45$’ For more info see https://lets-plot.org/pages/formats.html.

Returns

Scale specification.

Return type

FeatureSpec

Note

Defines sequential grey color scale for filling color aesthetic.

Examples

1from lets_plot import *
2LetsPlot.setup_html()
3data = {'x': list(range(-16, 16))}
4ggplot(data) + geom_tile(aes(x='x', fill='x')) + \
5    scale_fill_grey(start=.9, end=.1)