R/zzz.R

In patperu/effisr: 'EFFIS' Data from R

cabase <- function() "http://effis.jrc.ec.europa.eu"

cacomp <- function (l) Filter(Negate(is.null), l)

set_effisr_client <- function() {

  crul::HttpClient$new(
    url = "effis.jrc.ec.europa.eu",
    opts = list(timeout_ms = 30000),
    headers = list(`User-Agent` = "effisr R package; http://github.com/patperu/effisr")
  )

}

get_res_status <- function(res) {

  if (res$status_code > 201) {
    mssg <- jsonlite::fromJSON(res$parse("UTF-8"))$message$message
    x <- res$status_http()
    stop(
      sprintf("HTTP (%s) - %s\n  %s", x$status_code, x$explanation, mssg),
      call. = FALSE
    )
  }
}

geo_transform <- function(x) {

  v <- list()

  geo_type  <- x$type
  geo_coord <- x$coordinates

  for(i in seq_along(geo_type)){
    if(geo_type[i] == "Polygon")
      v[[i]] <- sf::st_polygon(list(geo_coord[[i]][1,,]))
    else {
      v[[i]] <- sf::st_multipolygon(list(geo_coord[[i]][[1]]))
    }

  }

  v
}

make_sf_fires <- function(res, data) {

  poly_obj <- geo_transform(res$results$shape)

  sf::st_sf(cbind(data, sf::st_sfc(poly_obj, crs = 4326)))

}

make_sf_current <- function(res, data) {

  poly_obj <- purrr::map(res$results$shape$coordinates, ~{st_polygon(list(matrix(.x, ncol = 2)))})

  sf::st_sf(cbind(data, sf::st_sfc(poly_obj, crs = 4326)))
}