Thanks Hisaji,
The problem is that my line is not an straight line, but
a very complex polyline (a boundary between types of forest
manually digitized over aerial photography) imported from a shp file
into a SpatialLinesDataFrame object.
Regards,
Agus
Hisaji ONO escribio':
> Hi.
>
> I've crea
Hi.
I've create very simple example "cutting polygon by line
c(0,5,10,5)" using by gpclib.
library(maptools)
library(gpclib)
x1<-t(structure(c(0,0,10,0,10,10,0,10,0,0),dim=c(2,5))) #
simple square
### method using buffer
min_buffer_dist <- 1e-10 # set minimum value
x2<-t(structure(c(-1,5
I've finally done this operation with a GIS. I was trying to
perform all this part of the project within R, trying not to use
any other tool, as a test. It's clear that the boundary
between GIS and spatial analysis is more and more fuzzy.
In my opinion, just importing and exporting between
R and a
On Tue, 30 Oct 2007, Agustin Lobo wrote:
> Is it possible to divide a polygon by a line
> into 2 polygons?
No, in general. All computational geometry ends up in having to deal with
the type of polygon. A convex polygon is one thing, and can be divided
into two parts, but a general polygon may b
Is it possible to divide a polygon by a line
into 2 polygons?
Agus
--
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: [EMAIL PROTECTED]
http://www.ija.csic.es/gt/obster
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