using a custom colour scheme in pandas/matplotlib/seaborn python

问题

I want to use a custom colour scheme using for various plots but can't get it to work (using seaborn and/or matplob & pandas for these plots)

flatui = ["#9b59b6", "#3498db", "#95a5a6", "#e74c3c", "#34495e", "#2ecc71"]
ax = sns.violinplot(x="Contents", y="Flavour", data=rd, color="lol", inner="box")

I get error code:

ValueError: to_rgb: Invalid rgb arg "flatui"
could not convert string to float: 'flatui'

even

ax = sns.violinplot(x="Contents", y="Flavour", data=rd, color=["9b59b6", "#3498db", "#95a5a6", "#e74c3c", "#34495e", "#2ecc71"], inner="box")

doesnt work

help please!

回答1:

Let's try this.

flatui = ["#9b59b6", "#3498db", "#95a5a6", "#e74c3c", "#34495e", "#2ecc71"]
sns.set_palette(flatui)
sns.palplot(sns.color_palette())

ax = sns.violinplot(x="Contents", y="Flavour", data=rd, color="lol", inner="box")

With some other data here are the results.

回答2:

You need to set colours via palettes in Seaborn or you can pass Violinplot the colours directly via the 'palette' parameter rather than 'color'. It's all in the Seaborn docs.

来源：https://stackoverflow.com/questions/43657645/using-a-custom-colour-scheme-in-pandas-matplotlib-seaborn-python