Split polygons or lines to segments

Source: R/toSeg.R

Split lines or polygons to separate segments.

toSeg(x)

Arguments

x

A SpatialLines* or a SpatialPolygons* object

Value

A SpatialLines object where each segment is represented by a separate feature

References

This function uses a modified version of code from the following 'r-sig-geo' post by Roger Bivand: https://stat.ethz.ch/pipermail/r-sig-geo/2013-April/017998.html

Examples

seg = toSeg(build[1, ])
plot(seg, col = sample(rainbow(length(seg))))

raster::text(rgeos::gCentroid(seg, byid = TRUE), 1:length(seg))


# Other data structures
toSeg(geometry(build)) # SpatialPolygons

#> class       : SpatialLines 
#> features    : 75 
#> extent      : 667850.3, 667941.1, 3538084, 3538143  (xmin, xmax, ymin, ymax)
#> crs         : NA 
toSeg(boston_sidewalk) # SpatialLinesDataFrame

#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> class       : SpatialLinesDataFrame 
#> features    : 353 
#> extent      : 328900, 329148, 4690530, 4690805  (xmin, xmax, ymin, ymax)
#> crs         : +proj=utm +zone=19 +datum=WGS84 +units=m +no_defs 
#> variables   : 3
#> names       : OBJECTID,     TYPE,       ShapeSTLen 
#> min values  :   100131, CWALK-CL, 1.60299290715796 
#> max values  :    99792, SWALK-CL, 314.796524738377 
toSeg(geometry(boston_sidewalk)) # SpatialLinesDataFrame

#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> Warning: CRS object has comment, which is lost in output
#> class       : SpatialLines 
#> features    : 353 
#> extent      : 328900, 329148, 4690530, 4690805  (xmin, xmax, ymin, ymax)
#> crs         : +proj=utm +zone=19 +datum=WGS84 +units=m +no_defs