Add support for other classes

[agila5]

As far as I know, there are a few more classes (other than sfnetwork) which are used in the R ecosystem to represent spatial networks. For example:

linnet

library(spatstat.linnet)
#> ...
plot(as.linnet(chicago), show.vertices = TRUE, pch = 16)

^{Created on 2025-05-29 with reprex v2.1.1.9000}

dodgr

library(dodgr)

net <- weight_streetnet(hampi)
plot(net[c("from_lon", "from_lat")], pch = 16, cex = 0.5)
with(net, segments(from_lon, from_lat, to_lon, to_lat, col = "grey"))
points(net[c("from_lon", "from_lat")], pch = 16, cex = 0.5)

^{Created on 2025-05-29 with reprex v2.1.1.9000}

MetricGraph

library(MetricGraph)
#> This is MetricGraph 1.5.0
#> - See https://davidbolin.github.io/MetricGraph for vignettes and manuals.
#> 
#> Attaching package: 'MetricGraph'
#> The following object is masked from 'package:stats':
#> 
#>     filter

pems_graph <- metric_graph$new(edges = pems$edges, verbose = FALSE)
pems_graph$add_observations(data = pems$data, normalized=TRUE, verbose = FALSE)
pems_graph$plot(type = "ggplot")

^{Created on 2025-05-29 with reprex v2.1.1.9000}

If possible and in the long term, I believe it would be nice to add the possibility to plot also such objects.

[mtennekes]

Added support for spatstat.linnet. I took the very lazy route, and just did as_sfnetwork. In the future we can add native methods.
Is there any other low-hanging fruit @agila5 ? E.g. what other conversion methods are implemented in sfnetworks?

[agila5]

The CRAN version of sfnetworks already implements methods for converting spatstat.geom::psp and stplanr::sfNetwork (cc @Robinlovelace, although I'm not sure if you want to deprecate it). The github version supports also dodgr, but that's still a WIP

[Robinlovelace]

The CRAN version of sfnetworks already implements methods for converting spatstat.geom::psp and stplanr::sfNetwork (cc @Robinlovelace, although I'm not sure if you want to deprecate it).

Yes I do want to deprecate it in favour of {sfnetworks}.