Get physical coordinates as a list (Tutorial 7)

Hi,
I have a question regarding obtaining the physical coordinates on which my weak form is evaluated. I came across Tutorial 7 at [https://gridap.github.io/Tutorials/dev/pages/t007_darcy/](https://chat.openai.com/url), which seems to address this issue.

It appears that using "px = get_physical_coordinate(trian)" provides the desired information. However, I am interested in saving these points in a list or vector for further use. Could you please guide me on how to achieve this?

从链接页面中的 Tutorial 7 开始，检查 get_physical_coordinate(trian) 的使用方式。确定如何将返回的物理坐标保存为列表或向量，然后记录或演示这种用法，并验证所得集合包含后续使用所需的坐标。

由索引模型根据 Issue 内容生成。