pandas 调整散点图中的点大小
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Adjusting dot size in scatterplot
提问by Baron Yugovich
I am doing
我在做
ax = df.plot(x=x_col, y=y_col, style=['o', 'rx'])
but I don't like that the data points are large circles. I have thousands of datapoints, so it makes the plot ugly. Any idea how I can make the dots smaller, i.e. have them be actual points, rather than circles? Or any alternative suggestions for this sort of scatterplot?
但我不喜欢数据点是大圆圈。我有数千个数据点，所以它使情节丑陋。知道如何使点变小，即让它们成为实际的点，而不是圆圈吗？或者对这种散点图有什么替代建议？
回答by Stefan
The DataFrame.plot()docsinclude the option to pass keyword arguments to the underlying matplotlibplotting method. As you can see here, there's an argument sfor the dot size. So you should be able to:
该DataFrame.plot()文档包括对关键字参数传递到下面的选项matplotlib绘制方法。正如您在此处看到的，s对于点的大小存在争议。所以你应该能够：
ax = df.plot(kind='scatter', x=x_col, y=y_col, style=['o', 'rx'], s=12)
This is also illustrated in the pandasvisualization docs.
这也在pandas可视化文档中进行了说明。
回答by atomh33ls
The valid matplotlib marker stylesinclude; '.'(point) and ','(pixel).
在有效matplotlib标记样式包括： '.'（点）和','（像素）。
So an alternative could be:
所以一个替代方案可能是：
ax = df.plot(x=x_col, y=y_col, style=['.', 'rx'])
