Running examples in ‘graph4lg-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: graph_plan
> ### Title: Create a graph with a minimum planar graph topology
> ### Aliases: graph_plan
> 
> ### ** Examples
> 
> data(pts_pop_ex)
> g_plan <- graph_plan(crds = pts_pop_ex,
+              ID = "ID",
+              x = "x",
+              y = "y")
Coordinates were treated as projected coordinates. Check whether
              it is the case.
Warning: replacing previous import ‘spatstat.utils::RelevantNA’ by ‘spatstat.sparse::RelevantNA’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::grokIndexVector’ by ‘spatstat.sparse::grokIndexVector’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::fullIndexSequence’ by ‘spatstat.sparse::fullIndexSequence’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::positiveIndex’ by ‘spatstat.sparse::positiveIndex’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::replacementIndex’ by ‘spatstat.sparse::replacementIndex’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::RelevantEmpty’ by ‘spatstat.sparse::RelevantEmpty’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::isRelevantZero’ by ‘spatstat.sparse::isRelevantZero’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::logicalIndex’ by ‘spatstat.sparse::logicalIndex’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::RelevantZero’ by ‘spatstat.sparse::RelevantZero’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::strictIndexSequence’ by ‘spatstat.sparse::strictIndexSequence’ when loading ‘spatstat.geom’
Warning: replacing previous import ‘spatstat.utils::RelevantNA’ by ‘spatstat.sparse::RelevantNA’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::grokIndexVector’ by ‘spatstat.sparse::grokIndexVector’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::fullIndexSequence’ by ‘spatstat.sparse::fullIndexSequence’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::positiveIndex’ by ‘spatstat.sparse::positiveIndex’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::replacementIndex’ by ‘spatstat.sparse::replacementIndex’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::RelevantEmpty’ by ‘spatstat.sparse::RelevantEmpty’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::isRelevantZero’ by ‘spatstat.sparse::isRelevantZero’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::logicalIndex’ by ‘spatstat.sparse::logicalIndex’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::RelevantZero’ by ‘spatstat.sparse::RelevantZero’ when loading ‘spatstat.core’
Warning: replacing previous import ‘spatstat.utils::strictIndexSequence’ by ‘spatstat.sparse::strictIndexSequence’ when loading ‘spatstat.core’
Error: 'ppp' is not an exported object from 'namespace:spatstat'
Execution halted