mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-12-29 17:01:44 +01:00
96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
# being a bit too dynamic
|
|
import warnings
|
|
|
|
import matplotlib.cm as cm
|
|
import matplotlib.colors
|
|
import numpy as np
|
|
|
|
from pandas.core.dtypes.common import is_list_like
|
|
|
|
import pandas.core.common as com
|
|
|
|
|
|
def _get_standard_colors(
|
|
num_colors=None, colormap=None, color_type="default", color=None
|
|
):
|
|
import matplotlib.pyplot as plt
|
|
|
|
if color is None and colormap is not None:
|
|
if isinstance(colormap, str):
|
|
cmap = colormap
|
|
colormap = cm.get_cmap(colormap)
|
|
if colormap is None:
|
|
raise ValueError(f"Colormap {cmap} is not recognized")
|
|
colors = [colormap(num) for num in np.linspace(0, 1, num=num_colors)]
|
|
elif color is not None:
|
|
if colormap is not None:
|
|
warnings.warn(
|
|
"'color' and 'colormap' cannot be used simultaneously. Using 'color'"
|
|
)
|
|
colors = (
|
|
list(color)
|
|
if is_list_like(color) and not isinstance(color, dict)
|
|
else color
|
|
)
|
|
else:
|
|
if color_type == "default":
|
|
# need to call list() on the result to copy so we don't
|
|
# modify the global rcParams below
|
|
try:
|
|
colors = [c["color"] for c in list(plt.rcParams["axes.prop_cycle"])]
|
|
except KeyError:
|
|
colors = list(plt.rcParams.get("axes.color_cycle", list("bgrcmyk")))
|
|
if isinstance(colors, str):
|
|
colors = list(colors)
|
|
|
|
colors = colors[0:num_colors]
|
|
elif color_type == "random":
|
|
|
|
def random_color(column):
|
|
""" Returns a random color represented as a list of length 3"""
|
|
# GH17525 use common._random_state to avoid resetting the seed
|
|
rs = com.random_state(column)
|
|
return rs.rand(3).tolist()
|
|
|
|
colors = [random_color(num) for num in range(num_colors)]
|
|
else:
|
|
raise ValueError("color_type must be either 'default' or 'random'")
|
|
|
|
if isinstance(colors, str):
|
|
conv = matplotlib.colors.ColorConverter()
|
|
|
|
def _maybe_valid_colors(colors):
|
|
try:
|
|
[conv.to_rgba(c) for c in colors]
|
|
return True
|
|
except ValueError:
|
|
return False
|
|
|
|
# check whether the string can be convertible to single color
|
|
maybe_single_color = _maybe_valid_colors([colors])
|
|
# check whether each character can be convertible to colors
|
|
maybe_color_cycle = _maybe_valid_colors(list(colors))
|
|
if maybe_single_color and maybe_color_cycle and len(colors) > 1:
|
|
hex_color = [c["color"] for c in list(plt.rcParams["axes.prop_cycle"])]
|
|
colors = [hex_color[int(colors[1])]]
|
|
elif maybe_single_color:
|
|
colors = [colors]
|
|
else:
|
|
# ``colors`` is regarded as color cycle.
|
|
# mpl will raise error any of them is invalid
|
|
pass
|
|
|
|
# Append more colors by cycling if there is not enough color.
|
|
# Extra colors will be ignored by matplotlib if there are more colors
|
|
# than needed and nothing needs to be done here.
|
|
if len(colors) < num_colors:
|
|
try:
|
|
multiple = num_colors // len(colors) - 1
|
|
except ZeroDivisionError:
|
|
raise ValueError("Invalid color argument: ''")
|
|
mod = num_colors % len(colors)
|
|
|
|
colors += multiple * colors
|
|
colors += colors[:mod]
|
|
|
|
return colors
|