tm_basemap: group + group.control="radio" does not switch basemap in tmap v4.1 #1151
Description
Hi, I'm struggling to create the map using the tm_basemap function in 'view' mode.
Am I overlooking something, or could this potentially be a bug?
Description
When I add multiple basemaps via tm_basemap(..., group=…) and then use group.control="radio" (or group.single=TRUE), the UI toggles, but the underlying tile layers never get removed. Toggling between “Satellite” and “Street Map” does not switch the visible basemap.
Expected behavior
Clicking on a different basemap radio button should turn off the previous tile layer and display only the newly selected one.
Actual behavior
The radio buttons appear, but selecting a new basemap does not remove the old one. The map always shows the last-added tiles.
Reproducible example
library(tmap)
# view mode
tmap_mode("view")
# minimal map
tm_shape(World) +
tm_polygons(
"pop_est",
fill.legend = tm_legend(title = "Population")
) +
tm_basemap("OpenStreetMap", group = "Street Map") +
tm_basemap("Esri.WorldImagery", group = "Satellite") +
tm_view(
# basemap groups as radios, overlays as checkboxes
group.control = list(
base = "radio",
overlay = "checkbox"
),
# force only one group visible at a time
group.single = TRUE
)
Session info
> sessionInfo()
R version 4.5.0 (2025-04-11 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 11 x64 (build 26100)
Matrix products: default
LAPACK version 3.12.1
locale:
[1] LC_COLLATE=English_United States.utf8 LC_CTYPE=English_United States.utf8 LC_MONETARY=English_United States.utf8 LC_NUMERIC=C
[5] LC_TIME=English_United States.utf8
time zone: Europe/Berlin
tzcode source: internal
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] tmap_4.1
loaded via a namespace (and not attached):
[1] s2_1.1.9 class_7.3-23 lwgeom_0.2-14 KernSmooth_2.23-26 lattice_0.22-6 digest_0.6.37
[7] magrittr_2.0.3 grid_4.5.0 RColorBrewer_1.1-3 fastmap_1.2.0 jsonlite_2.0.0 e1071_1.7-16
[13] leafsync_0.1.0 DBI_1.2.3 crosstalk_1.2.1 viridisLite_0.4.2 cols4all_0.8 XML_3.99-0.18
[19] jquerylib_0.1.4 codetools_0.2-20 abind_1.4-8 cli_3.6.5 rlang_1.1.6 units_0.8-7
[25] tmaptools_3.2 base64enc_0.1-3 leaflegend_1.2.1 tools_4.5.0 raster_3.6-32 parallel_4.5.0
[31] maptiles_0.10.0 colorspace_2.1-1 spacesXYZ_1.6-0 logger_0.4.0 R6_2.6.1 png_0.1-8
[37] proxy_0.4-27 classInt_0.4-11 leaflet_2.2.2 leaflet.providers_2.0.0 htmlwidgets_1.6.4 terra_1.8-54
[43] data.table_1.17.6 glue_1.8.0 Rcpp_1.0.14 sf_1.0-21 rstudioapi_0.17.1 dichromat_2.0-0.1
[49] htmltools_0.5.8.1 leafem_0.2.4 wk_0.9.4 compiler_4.5.0 sp_2.2-0 stars_0.6-8