擅长:python、mysql、java
<p>只需标记每个绘图并像您所做的那样调用legend()。)</p>
<pre><code>plt.scatter(x1,y1,label=str(pointset1))
plt.scatter(x2,y2,label=str(pointset2))
plt.scatter(x3,y3,label=str(pointset3))
plt.legend(loc='upper right', numpoints=1, ncol=3, fontsize=8, bbox_to_anchor=(1,1))
plt.show()
</code></pre>