如何将RGBA颜色传递给Seaborn PairGrid [英] How to pass RGBA color into Seaborn PairGrid

问题描述

我定义了一个 PairGrid 函数，效果很好

I have defined a PairGrid function, which works fine

grid = sns.PairGrid(data= df,
                vars = ['sugarpercent', 'pricepercent', 'winpercent'], size = 3)

# Map the plots to the locations
grid = grid.map_upper(plt.scatter, color = 'darkred')
grid = grid.map_upper(corr)
grid = grid.map_upper(sns.regplot, line_kws={'color': 'darkred'}, lowess=True)

但是，对于 scatter 和 regplot 函数，我想使用 RGBA (12, 50, 196, 0.6) 而不是深红色.我试图替换元组'color':(12，50，196，0.6)，并收到以下错误: ValueError:RGBA值应在0-1范围内.读了一点，似乎我需要迭代并将颜色分配给每个数据点.那是对的吗?当绘图函数作为参数传递时，你如何做到这一点?

However, I want to use RGBA (12, 50, 196, 0.6) instead of darkred for both scatter and regplot function. I tried to replace the tuple 'color': (12, 50, 196, 0.6), and got this error: ValueError: RGBA values should be within 0-1 range. Having read a bit, it seems that I need to iterate over and assign the color to each data point. Is that correct? How do you do that when the plotting function is passed as a parameter?

推荐答案

该错误不言自明.RGB(A) 值需要在 0-1 之间，而您的值 (12, 50, 196)(最有可能)在 0-255 之间.

The error is pretty self-explanatory. RGB(A) values need to be between 0–1, while your values (12, 50, 196) are (most likely) between 0–255.

改为:color=(12/255, 50/255, 196/255, 0.6)

my_color = (12/255, 50/255, 196/255, 0.6)

g = sns.PairGrid(penguins)
g.map_upper(plt.scatter, color=my_color)
g.map_upper(sns.regplot, line_kws={'color': my_color}, lowess=True)

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