sf.kde - Error in sub(re, "", x, perl = TRUE) : input string 1 is invalid UTF-8

[jcusens]

Hi Jeffrey,

I am coming across this issue (Error in sub(re, "", x, perl = TRUE) : input string 1 is invalid UTF-8) with sf.kde. It works fine when I use CRS 28992 as per the example in the help file, but whn I use another CRS, in this case 32633 i get the error. I have not had this earlier this week when I ran the same code. I am not sure if I am missing something completely obvious about the underlying conditokns for the kde estimate, but as I say, I am running code that worked earlier this week. Repro example below:

library(sf)
library(spatialEco)
library(dplyr)

Load meuse data

data(meuse, package = "sp")

Unweighted KDE (spatial locations only) with 40m resolution using CRS 28992

meuse_28992 <- st_as_sf(meuse, coords = c("x", "y"), crs = 28992,
agr = "constant")

pt_kde_28992 <- sf.kde(x = meuse_28992, bw = 1000, standardize = TRUE, res=40)

Unweighted KDE (spatial locations only) with 40m resolution using CRS 32633

meuse_32633 <- st_as_sf(meuse, coords = c("x", "y"), crs = 28992,
agr = "constant") %>%
st_transform(32633)

pt_kde_32633 <- sf.kde(x = meuse_32633, bw = 1000, standardize = TRUE, res=40)