最近在学习Django框架，于是在Windows系统上搭建了Django环境，并使用虚拟机Ubuntu系统上安装的mysql作为项目的远程数据库，前几天一直用得好好的，今天在虚拟机上连接数据库时，
I am working with a large list of points (each point has three dimensions x,y,z). I am pretty new with R, so I would like to know what is the best way to represent that kind of information.As far as
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