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View Code? Open in Web Editor NEWR htmlwidget for cartogram-chart
Home Page: https://dreamrs.github.io/topogram/
License: Other
R htmlwidget for cartogram-chart
Home Page: https://dreamrs.github.io/topogram/
License: Other
Any chance more regions will be included?
Thank you.
I see you're using geojsonio
to convert sf
objects to GeoJSON. Would you consider using geojonsf
to improve speed?
Hopefully in this benchmark I'm replicating what you're doing inside topogram
library(microbenchmark)
library(geojsonsf)
library(geojsonio)
microbenchmark(
geojsonsf = {
shape$id <- 1:nrow(shape)
sf_geojson( shape )
},
geojsonio = {
geo_list <- geojson_list(input = shape)
for (i in seq_along(geo_list$features)) {
geo_list$features[[i]]$id <- i - 1
geo_list$features[[i]]$properties$id <- i - 1
}
geo_json <- geojson_json(input = geo_list)
},
times = 5
)
# Unit: milliseconds
# expr min lq mean median uq max neval
# geojsonsf 1.955478 2.078431 2.172361 2.126749 2.226844 2.474302 5
# geojsonio 235.419525 239.354627 241.348199 240.610821 242.299392 249.056631 5
Note, I'm planning an update to geojsonsf
by the end of October with some important fixes & updates.
You can also specify package version dependencies inside the DESCRIPTION
in place of inside functions
if (packageVersion("geojsonio") < "0.6.0.9100")
stop("You need geojsonio >= 0.6.0.9100 to use this function.", call. = FALSE)
vs
Imports:
htmlwidgets,
geojsonio (>=0.6.09100),
htmltools,
shiny,
rmarkdown,
jsonlite,
magrittr
This way you don't have to implement the version check inside each function which may require it.
Would it be possible to add New Zealand maps? I tried to have a go myself, but the topojson files I created threw errors.
There are shape files available from Statistics NZ
I grabbed the "New Zealand 2017 clipped generalised" file to get territorial authorities (TA) and regional councils (REGC), and "New Zealand Electoral Districts 2014" to get the general (GED) and Māori (MED) electorates, as we've just had an election (though annoyingly these are to the 12 nautical mile boundary at the coast).
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