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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -2,6 +2,7 @@ library(jsonlite) library(glue) library(leaflet) library(magrittr) library(htmltools) # Teste si la chaîne est une référence cadastrale isParcelle <- function(s) { -
datagistips revised this gist
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,6 +1,7 @@ library(jsonlite) library(glue) library(leaflet) library(magrittr) # Teste si la chaîne est une référence cadastrale isParcelle <- function(s) { -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,50 @@ library(jsonlite) library(glue) library(leaflet) # Teste si la chaîne est une référence cadastrale isParcelle <- function(s) { grepl("^([013-9]\\d|2[AB1-9])\\d{3}(0|[A-Z])[A-Z][0-9]{4}[a-z]?$", s) } # Retourne la parcelle et sa bbox getParcelle <- function(ref_cad) { code_insee <- substr(ref_cad, 1, 5) section <- substr(ref_cad, 6, 7) numero <- substr(ref_cad, 8, 11) url <- glue("https://apicarto.ign.fr/api/cadastre/parcelle?code_insee={code_insee}§ion={section}&numero={numero}&source_ign=PCI") # Bbox res <- jsonlite::fromJSON(url) bb <- res$bbox # Géométrie coords <- res$features$geometry$coordinates[[1]] x <- coords[,,,1] y <- coords[,,,2] coords <- cbind(x, y) geometry <- st_polygon(list(coords)) %>% st_sfc %>% st_set_crs(4326) list(geometry = geometry, bb = bb, code_insee = code_insee, section = section, numero = numero) } # Parcelle d'exemple refParcelle <- "592200B0084" # Est-ce une parcelle ? if(isParcelle(refParcelle)) { # Si oui, on la récupère parcelle <- getParcelle(refParcelle) } # Affiche la carte leaflet() %>% addTiles() %>% fitBounds(parcelle$bb[1], parcelle$bb[2], parcelle$bb[3], parcelle$bb[4]) %>% addPolygons(data = parcelle$geometry, label = HTML(glue("Code INSEE : {parcelle$code_insee}<br>Section : {parcelle$section}<br>Numéro : {parcelle$numero}")))