concaveman
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Published
20 hours ago •
joelgombin
joelgombin
Error: Shape contains invalid polygons
Hello,
I tried running the example but got the following error:
> Error: Shape contains invalid polygons. Please fix it or set tmap_options(check.and.fix = TRUE) and rerun the plot
The code still did not work (was frozen) after setting the tmap_options(check.and.fix = TRUE)
Can you check what went wrong? Thank you!
library(concaveman)
library(dplyr)
library(purrr)
library(sf)
library(tmap)
data(points)
polygons <- map(unique(points$k),
~ concaveman(points[points$k %in% .,])
) %>%
map2(unique(points$k), ~ mutate(.x, k = .y)) %>%
reduce(rbind)
tm_shape(points) +
tm_dots(col = "k", size = 0.1, legend.show = FALSE) +
tm_shape(polygons) +
tm_fill(col = "k", alpha = 0.5, legend.show = FALSE) +
tm_borders() +
tm_layout(frame = FALSE)
#> Error: Shape contains invalid polygons. Please fix it or set tmap_options(check.and.fix = TRUE) and rerun the plot
Created on 2021-10-19 by the reprex package (v2.0.1)
Session info
sessioninfo::session_info()
#> - Session info ---------------------------------------------------------------
#> setting value
#> version R version 4.1.0 (2021-05-18)
#> os Windows 10 x64
#> system x86_64, mingw32
#> ui RTerm
#> language (EN)
#> collate English_United States.1252
#> ctype English_United States.1252
#> tz America/Los_Angeles
#> date 2021-10-19
#>
#> - Packages -------------------------------------------------------------------
#> package * version date lib
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#> assertthat 0.2.1 2019-03-21 [1]
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#> fs 1.5.0 2020-07-31 [1]
#> generics 0.1.0 2020-10-31 [1]
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#> highr 0.9 2021-04-16 [1]
#> htmltools 0.5.2.9000 2021-08-26 [1]
#> htmlwidgets 1.5.4 2021-09-08 [1]
#> httr 1.4.2 2020-07-20 [1]
#> jsonlite 1.7.2 2020-12-09 [1]
#> KernSmooth 2.23-20 2021-05-03 [2]
#> knitr 1.36 2021-09-29 [1]
#> lattice 0.20-45 2021-09-22 [1]
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I've also experienced this. Increasing the concavity value can make the returned polygon valid, but the shape becomes more of a convex hull.
