Hi,

You should look at spatstat functions dedicated to line segment patterns
(psp objects)

midpoints.psp compute the midpoints of line segments
crossing.psp find crossing points between two line segment patterns

Best,

Mathieu

2011/12/9 Miaoying Shi <miaoyingshi23@gmail.com>

> Hello,
>
> I have been searching for a while online to find out a command  or scripts
> in R in order  to extract the intersections of streets and add other
> attributes, for example, the street names of the two intersected lines.  I
> know there is a perfect tool of arcgis can work. see
> http://arcscripts.esri.com/details.asp?dbid=16233 but i really need to
> work
> in R. Does anyone know how to do it? Thanks a lot!
>
>
>
>
> Best,
> miaoying
>
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