从GeoPandas图中重新放置图例 [英] Relocating legend from GeoPandas plot

问题描述

我正在使用GeoPandas绘图功能绘制带有图例的地图.当我绘图时，我的图例出现在该图的右上角.看起来是这样的:

I'm plotting a map with legends using the GeoPandas plotting function. When I plot, my legends appear in the upper right corner of the figure. Here is how it looks like:

我想将图例移到图形的下部.通常，对于正常的matplotlib图，我通常会这样做:

I wanted to move the legends to the lower part of the graph. I would normally would have done something like this for a normal matplotlib plot:

fig, ax = plt.subplots(1, figsize=(4.5,10))
lima_bank_num.plot(ax=ax, column='quant_cuts', cmap='Blues', alpha=1, legend=True)
ax.legend(loc='lower left')

但是，不考虑此修改.

However, this modification is not taken into account.

推荐答案

您可以使用ax.get_legend()访问在ax实例上定义的图例.然后，您可以使用方法set_bbox_to_anchor更新图例的位置.从头开始创建图例时，这与loc关键字的易用性不同，但是可以控制位置.因此，以您的示例为例，

You can access the legend defined on the ax instance with ax.get_legend(). You can then update the location of the legend using the method set_bbox_to_anchor. This doesn't provide the same ease of use as the loc keyword when creating a legend from scratch, but does give control over placement. So, for your example, something like:

leg = ax.get_legend()
leg.set_bbox_to_anchor((0., 0., 0.2, 0.2))

有点 set_bbox_to_anchor的文档，尽管我没有觉得它没有什么特别的帮助.

A bit of documentation of set_bbox_to_anchor, though I don't find it extraordinarily helpful.

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