如何在 Seaborn 中使用 Facet Grid 用逗号分隔数千个 [英] How to separate thousands with commas using Facet Grid in Seaborn

问题描述

我有以下代码:

    d = sns.FacetGrid(data = df,
                      col = 'Company',
                      sharex = False,
                      sharey = False,
                      col_wrap = 4)
    d.map(sns.distplot, 'Volume', kde = False, rug = True, fit = stats.norm)
    d.set_xlabels('volume')
    d.set_xticklabels(rotation = 45)
    plt.savefig(myDataRepository + 'figure_02__' + str(time_stamp) + '.png')
    ax.get_xaxis().set_major_formatter(
         matplotlib.ticker.FuncFormatter(lambda x, p: format(int(x), ',')))

最后两行尝试用逗号分隔 x 轴值.例如，500,000"而不是500000".

The last two lines attempt to separate the x-axis values with commas. For example, '500,000' instead of '500000'.

我看到一条错误消息说:

I see an error message saying:

"global name ax is not defined"

我将如何修改 ax. 以便我可以用逗号分隔格式化 x 轴值?

How would I amend ax. such that I can format the x-axis values with comma separation?

提前致谢！

---在下面编辑---

这是我发布的更新代码.它仍然失败，但这次在评估

Here is updated code that I'm posting. It still fails, but this time with error message @property when evaluating

d.ax.get_xaxis().set_major_formatter(tkr.FuncFormatter(lambda x, p: format(int(x), ',')))

修订代码:

fig, ax = plt.subplots()

d = sns.FacetGrid(data = df,
                  col = 'Company',
                  sharex = False,
                  sharey = False,
                  col_wrap = 4)
d.map(sns.distplot, 'Volume', kde = False, rug = True, fit = stats.norm)
d.set_xlabels('volume')
d.set_xticklabels(rotation = 45)
plt.savefig(myDataRepository + 'figure_02__' + str(time_stamp) + '.png')

d.ax.get_xaxis().set_major_formatter(tkr.FuncFormatter(lambda x, p: format(int(x), ',')))

@cphlewis 建议我将 ax.get_axis() 放在 Facet Grid 中.但是怎么样???

@cphlewis is suggesting that I put the ax.get_axis() inside the Facet Grid. But how???

将 ax.get_axis() 放入 FacetGrid 似乎并没有解决这个问题(假设我这样做是正确的).在 Seaborn FacetGrid 中使用这个 ax.get_axis() 函数是否可能?

Putting ax.get_axis() inside the FacetGrid does not seem to solve this problem (assuming I did so correctly). Is it even possible to use this ax.get_axis() function with the Seaborn FacetGrid?

错误信息:

    971             return self.axes[0, 0]
    972         else:
--> 973             raise AttributeError
    974 
    975     @property

AttributeError: 

推荐答案

我也遇到了这个问题，并通过添加一个简单的循环来用逗号格式化所有轴，在这里想出了一个干净的解决方案.

I was having this problem too and came up with a clean solution here by adding a simple loop to format all of the axes with the comma.

# set up the standard plotting of the df
g = sns.PairGrid(wmix, vars = ['ambulatory', 'wheelchair', 'stretcher'], hue="holiday")

g.map_upper(plt.scatter)
g.map_lower(sns.kdeplot)
g.map_diag(sns.kdeplot, lw=2, legend=False)
g.add_legend()


# now add the comma and remove decimal formats for each y axis
for ax in g.axes[:,0]:
  ax.get_yaxis().set_major_formatter(mpl.ticker.StrMethodFormatter('{x:,.0f}'))

# this adds the axis labels to each plot
plt.subplots_adjust(top=0.9)
g.fig.suptitle('Ride Count Relationships');

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