diff --git a/reprexes/test-rnet_merge_rsgeo_issue_552.R b/reprexes/test-rnet_merge_rsgeo_issue_552.R
index 39e8cdec..2232bf05 100644
--- a/reprexes/test-rnet_merge_rsgeo_issue_552.R
+++ b/reprexes/test-rnet_merge_rsgeo_issue_552.R
@@ -8,14 +8,18 @@
 # l <- sf::read_sf("test_line.geojson")
 # n_segments <- jsonlite::read_json("n_segments.json", simplifyVector = TRUE)
 
+
 l <- sf::read_sf("https://github.com/ropensci/stplanr/releases/download/v1.1.2/test_line.geojson")
-n_segments <- jsonlite::read_json("https://github.com/ropensci/stplanr/releases/download/v1.1.2/n_segments.json")
+n_segments <- jsonlite::read_json("https://github.com/ropensci/stplanr/releases/download/v1.1.2/n_segments.json", simplifyVector = TRUE)
+
 
-res_rsgeo <- rsgeo::line_segmentize(l$geometry, n_segments)
-length(res_rsgeo)
+# extract geometry and convert to rsgeo
+geo <- rsgeo::as_rsgeo(sf::st_geometry(l))
+
+# segmentize the line strings
+res_rsgeo <- rsgeo::line_segmentize(geo, n_segments)
 
 # make them into sfc_LINESTRING
 res <- sf::st_cast(sf::st_as_sfc(res_rsgeo), "LINESTRING")
-
 length(res)
 sum(n_segments)
diff --git a/vignettes/merging-route-networks.Rmd b/vignettes/merging-route-networks.Rmd
index 5b1d7f9c..353f766b 100644
--- a/vignettes/merging-route-networks.Rmd
+++ b/vignettes/merging-route-networks.Rmd
@@ -46,6 +46,9 @@ We pre-processed the input simple geometry to make it even simpler as shown belo
 # summary(sf::st_length(rnet_x))
 plot(sf::st_geometry(rnet_x))
 rnet_x = rnet_subset(rnet_x, rnet_y, dist = 20)
+names(rnet_x)
+# Keep only the id column for x:
+rnet_x = rnet_x %>% select(identifier)
 # nrow(rnet_x)
 # plot(sf::st_geometry(rnet_x))
 rnet_x = rnet_subset(rnet_x, rnet_y, dist = 20, min_length = 5)
@@ -141,6 +144,19 @@ sum(rnet_merged$value * sf::st_length(rnet_merged), na.rm = TRUE)
 sum(rnet_y$value * sf::st_length(rnet_y), na.rm = TRUE)
 ```
 
+Let's try joining with a character column:
+
+```{r}
+rnet_y$road_type = sample(c("A", "B", "C"), nrow(rnet_y), replace = TRUE)
+funs = list(value = sum, road_type = function(x) { table(x)[[1]] })
+rnet_merged = rnet_merge(sum_flows = FALSE,
+  rnet_x, 
+  rnet_y, 
+  dist = 20, segment_length = 10, funs = funs, max_angle_diff = 20)
+```
+
+# 3 km dataset
+
 Now let's testing on 3km dataset
 
 ```{r}