如何从随机自拦截线(R中的psp)列表中生成分段列表? [英] How to generate a list of segments from a list of random self-intercepting lines (psp in R)?

问题描述

我正在使用X=rpoisline(4)生成线并用plot(X)绘制它们. 在X$ends中，我的坐标和交点与selfcrossing.psp(X)(在R中，带有spatstat的library(spatstat)).

I'm using X=rpoisline(4) to generate lines and plot them with plot(X). With X$ends I have their coordinates and their intersection points with selfcrossing.psp(X) (In R with spatstat : library(spatstat)).

我需要获取线段及其坐标的列表，并能够对其进行操作(更改其方向，位置，交点...).这些线段必须由一条线与另一条线和窗口的交点定义.

I need to get a list of segments and their coordinates and be able to manipulate them (change their orientation, position, intersection...). Those segments have to be defined by the intersection of a line with an other line and with the window.

那么，我是否缺少一种简单的方法来将不相交段的 psp 中的几个相交线的 psp 转换(我希望这很清楚)?

So, am I missing a simple way to convert a psp of few intersecting lines in a psp of non intersecting segments (I hope it's clear) ?

如果您使用的是非简单方式，我很感兴趣！

If you have a non-simple way, I'm interested to !

感谢您的时间！

这是我的台词:

这是我认为如果设法处理每个段(一个接一个地)的话，我可以产生的那种随机的东西.因此，我需要从随机行列表中获取细分列表.

And here are the kind of random stuff I think I can produce if I manage to handle each segments (one by one). So I need to get a list of segments from my list of random lines.

推荐答案

spatstat函数selfcut.psp正是为此目的而设计的.

The spatstat function selfcut.psp is designed for exactly this purpose.

Y <- selfcut.psp(X)

有关操纵线段模式的更多信息，请参见 spatstat书籍中的4.4节.

For further information about manipulating line segment patterns, see section 4.4 in the spatstat book.

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