python - 如何更改 stackplot、matplotlib 的调色板？

Question

我希望改变stackplot的调色板，使大区域颜色浅，小区域颜色亮。

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
from scipy.stats import norm
import matplotlib as mpl
import matplotlib.font_manager as font_manager

file = r'E:\FD\Barren_Mudflat\ChinaCoastal\Provinces\0ProvinceStat.csv'
#set font property of legend
font1 = {'family' : 'Times New Roman',  
'weight' : 'normal',  
'size'   : 16
} 

#read csv
dat1 = pd.read_csv(file)
dat2 = dat1.iloc[:,0:12]
Year = dat2.iloc[:,0]
Mud = dat2.iloc[:,1:12]
Mud = Mud/1000.0

#read columns of dataframe
vol = Mud.columns

#transpose mud
mud2 = Mud.T


%matplotlib qt5

#set size of figure
fig, ax = plt.subplots()
fig.set_size_inches(15, 7.5)

#read values of dataframe
value = mud2.values
#plot stack area
sp = ax.stackplot(Year, value)
#set legend
proxy = [mpl.patches.Rectangle((0,0), 0,0, facecolor=pol.get_facecolor()[0]) 
for pol in sp]
ax.legend(proxy, vol,prop = font1, loc='upper left', bbox_to_anchor= 
(0.01,1), ncol = 6)

plt.xlim(1986,2016)
plt.xticks([1986,1991,1996,2001,2006,2011,2016],fontproperties='Times New 
Roman', size = '16')
plt.xlabel('Year',fontproperties='Times New Roman', size = '18')
plt.ylim(0,1400)
plt.yticks(np.arange(0,1500,200),fontproperties='Times New Roman', size = 
'16')
plt.ylabel('Mudflat area (thousand ha)',fontproperties='Times New Roman', 
size = '18')

#save fig: run this code before show()
plt.savefig(r"E:\FD\Barren_Mudflat\ChinaCoastal\Provinces\stackplot.jpg", 
dpi = 600)
plt.show()

这是代码的结果。我希望将红色更改为浅色，但我不知道如何更改默认调色板。

Answer 1

对于像我这样的人来说，发现这个帖子的时间晚于创建时间。

可以通过十六进制颜色代码设置自定义颜色。

例如

color_map = ["#9b59b6", "#e74c3c", "#34495e", "#2ecc71"]

然后绘制:

ax.stackplot(x, y, colors = color_map)

最后一点，也可以将 RGB 颜色转换为 HEX 颜色(在我的例子中我必须这样做)。如下:

rgb_code = [128, 128, 128]
hex_color = '#%02x%02x%02x' % (rgb_code[0], rgb_code[1], rgb_code[2])