diff --git a/R/VizRobinson.R b/R/VizRobinson.R
index cb8f2509ba70b906e97d967ea53e856989e6d3d0..2e00161c4da453ee352d4d53506ea65e6500ff4d 100644
--- a/R/VizRobinson.R
+++ b/R/VizRobinson.R
@@ -26,9 +26,11 @@
 #'  'data'. If it is NULL, the function tries to find the name in 
 #'  \code{esviz:::.KnownLatNames}. The default value is NULL.
 #'@param target_proj A character string indicating the target projection. It 
-#'  should be a valid crs string. The default projection is Robinson 
-#'  (ESRI:54030). Note that the character string may work differently depending
-#'  on PROJ and GDAL module version.
+#'  should be a valid crs string. The default projection is Robinson: 
+#'  "ESRI:54030". Note that the character string may work differently depending
+#'  on PROJ and GDAL module version. If package version 'sf' is lower than 
+#'  "1.0.10" and an error appears regarding the target crs, you can try with 
+#'  numeric crs (e.g. target_proj = 54030).
 #'@param drawleg A character string indicating the legend style. It can be 
 #'  'bar' (color bar by \code{ColorBarContinuous()}), 'ggplot2' (discrete legend 
 #'  by ggplot2), or FALSE (no legend). The default value is 'bar'.
diff --git a/vignettes/data_loading.md b/vignettes/data_loading.Rmd
similarity index 100%
rename from vignettes/data_loading.md
rename to vignettes/data_loading.Rmd
diff --git a/vignettes/map_proj_equi.md b/vignettes/map_proj_equi.Rmd
similarity index 100%
rename from vignettes/map_proj_equi.md
rename to vignettes/map_proj_equi.Rmd
diff --git a/vignettes/map_proj_robinson.md b/vignettes/map_proj_robinson.Rmd
similarity index 95%
rename from vignettes/map_proj_robinson.md
rename to vignettes/map_proj_robinson.Rmd
index 4908340493d8e9c6160eb1ee780fcc0c535b3592..6db8f219d065b86c33e8436dc4a2b9ebc878dc0c 100644
--- a/vignettes/map_proj_robinson.md
+++ b/vignettes/map_proj_robinson.Rmd
@@ -63,7 +63,7 @@ VizRobinson(rmsss$rmsss[1, , ], lon = lons, lat = lats,
             target_proj = "ESRI:54030",
             dots = !rmsss$sign[1, , ], dots_size = 0.7,
             brks = brks, cols = cols, col_inf = col_inf, 
-            style = 'point', legend = 'bar',
+            style = 'point', drawleg = 'bar',
             toptitle = "RMSSS SEAS5-ERA5 monthly tas anomaly Nov 2011-2016", 
             caption = "Projection: Robinson ESRI:54030",
             width = 10, height = 6,
@@ -85,7 +85,7 @@ VizRobinson(rmsss$rmsss[1, , ], lon = lons, lat = lats,
             mask = !rmsss$sign[1, , ],
             color_fun = ClimPalette("yellowred"),
             brks = 21, bar_limits = c(-1, 1),
-            style = 'point', legend = 'bar',
+            style = 'point', drawleg = 'bar',
             toptitle = "RMSSS SEAS5-ERA5 monthly tas anomaly Nov 2011-2016", 
             caption = "Projection: Mollweide ESRI:54009",
             width = 10, height = 6,
@@ -132,9 +132,9 @@ lons_eu <- attributes(exp_eu)$Variables$system5c3s$lon
 ## style = point
 VizRobinson(rmsss_eu$rmsss[1, , ], lon = lons_eu, lat = lats_eu,
             target_proj = "ESRI:102014",
-            style = 'point', legend = 'bar',
+            style = 'point', drawleg = 'bar',
             mask = !rmsss_eu$sign[1, , ],
-            brks = 21, cols = cols, bar_limits = c(-0.8, 0.8),
+            brks = 21, bar_limits = c(-0.8, 0.8),
             bar_extra_margin = c(0.6, 3, 0.6, 3),
             point_size = 1.3,
             crop_coastlines = c(lonmin = -20, lonmax = 40, latmin = 27, latmax = 70),
@@ -146,9 +146,9 @@ VizRobinson(rmsss_eu$rmsss[1, , ], lon = lons_eu, lat = lats_eu,
 ## style = polygon
 VizRobinson(rmsss_eu$rmsss[1, , ], lon = lons_eu, lat = lats_eu,
             target_proj = "ESRI:102014",
-            style = 'polygon', legend = 'bar',
+            style = 'polygon', drawleg = 'bar',
             mask = !rmsss_eu$sign[1, , ],
-            brks = 21, cols = cols, bar_limits = c(-0.8, 0.8),
+            brks = 21, bar_limits = c(-0.8, 0.8),
             bar_extra_margin = c(0.6, 3, 0.6, 3),
             point_size = 1.3,
             crop_coastlines = c(lonmin = -20, lonmax = 40, latmin = 27, latmax = 70),
diff --git a/vignettes/map_proj_stereo.md b/vignettes/map_proj_stereo.Rmd
similarity index 100%
rename from vignettes/map_proj_stereo.md
rename to vignettes/map_proj_stereo.Rmd
diff --git a/vignettes/time_series.md b/vignettes/time_series.Rmd
similarity index 100%
rename from vignettes/time_series.md
rename to vignettes/time_series.Rmd