Adding A Linestring By St_read In Shiny/Leaflet
Answer : Your test data is a dead link now, but I had a similar issue trying to plot sf linestrings and polygons in leaflet . The full error was Error in if (length(nms) != n || any(nms == "")) stop("'options' must be a fully named list, or have no names (NULL)") : missing value where TRUE/FALSE needed I was able to successfully plot my geometries by dropping the Z dimension from the line and polygon with st_zm . Here is an example: library(sf) library(leaflet) # create sf linestring with XYZM dimensions badLine <- st_sfc(st_linestring(matrix(1:32, 8)), st_linestring(matrix(1:8, 2))) # check metadata for badLine > head(badLine) Geometry set for 2 features geometry type: LINESTRING dimension: XYZM bbox: xmin: 1 ymin: 3 xmax: 8 ymax: 16 epsg (SRID): NA proj4string: NA LINESTRING ZM (1 9 17 25, 2 10 18 26, 3 11 19 2... LINESTRING ZM (1 3 5 7, 2 4 6 8) # attempt map; will fail > leaflet(...