将多个图形保存到一个多页 PDF 文档时出错

Error when saving multiple figures to a one multi-page PDF document

我正在尝试将多个图形保存到一个多页 PDF 文档中。我的代码如下:

import matplotlib.backends.backend_pdf
pdf = matplotlib.backends.backend_pdf.PdfPages('output.pdf')

sns.set_style('darkgrid')

g = sns.factorplot(data=df,
                   x='Date',
                   y='Product_Count',
                   col='Company',
                   col_wrap=4,
                   sharey=False)
g.set_xlabels('')
g.set_ylabels('product count')
g.set_xticklabels(rotation=45)
plt.locator_params(axis = 'x', nbins = 8)

f = sns.factorplot(data=df,
                   x='Date',
                   y='Volume_Count',
                   col='Company',
                   col_wrap=4,
                   sharey=False)
f.set_xlabels('')
f.set_ylabels('volume count')
f.set_xticklabels(rotation=45)
plt.locator_params(axis = 'x', nbins = 8)

figures = [g, f]

for figure in figures:
    pdf.savefig(figure)
pdf.close()

我看到这条错误消息:

ValueError: No such figure: <seaborn.axisgrid.FacetGrid object at 0x237CD5F0>

迭代有问题吗?

gf 不是 matplotlib.figure.Figure objects, they are seaborn.axisgrid.FacetGrid objects (as mentioned by ).

PdfPages 需要 Figure 个实例,幸运的是它们很容易从 FacetGrid 对象中提取,使用 g.figf.fig

因此,您需要做的就是更改一行,从

figures = [g, f]

至:

figures = [g.fig, f.fig]