geom_strip breaks with aes(linetype) #676
Description
geom_strip() results in an error when used in combination with aes(linetype = ...) in ggtree().
Reproducible example:
library(ggtree)
#> Warning: package 'ggtree' was built under R version 4.5.1
#> ggtree v3.16.3 Learn more at https://yulab-smu.top/contribution-tree-data/
#>
#> Please cite:
#>
#> Guangchuang Yu. Using ggtree to visualize data on tree-like structures.
#> Current Protocols in Bioinformatics. 2020, 69:e96. doi:10.1002/cpbi.96
# Create a simple tree
tree <- ape::read.tree(text = "((a:1,b:1):1,c:2);")
# Generate data for mapping
tip_data <- tidytree::as_tibble(ggtree::fortify(tree))
tip_data$group <- c(TRUE, TRUE, FALSE, TRUE, TRUE)
# Linetype only: works
ggtree(tree, aes(linetype = group)) %<+%
tip_data +
geom_tiplab()
# Strip labels only: works
ggtree(tree) %<+%
tip_data +
geom_strip(
taxa1 = "a",
taxa2 = "b",
label = "Clade AB"
)
# Linetype plus strip label: doesn't work
ggtree(tree, aes(linetype = group)) %<+%
tip_data +
geom_strip(
taxa1 = "a",
taxa2 = "b",
label = "Clade AB"
)
#> Error in `geom_segment()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 3rd layer.
#> Caused by error:
#> ! object 'group' not foundCreated on 2025-10-29 with reprex v2.1.1
Session info
sessioninfo::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#> setting value
#> version R version 4.5.0 (2025-04-11)
#> os macOS Sonoma 14.6.1
#> system aarch64, darwin20
#> ui X11
#> language (EN)
#> collate en_US.UTF-8
#> ctype en_US.UTF-8
#> tz Asia/Tokyo
#> date 2025-10-29
#> pandoc 3.1.2 @ /usr/local/bin/ (via rmarkdown)
#> quarto 1.6.39 @ /Applications/quarto/bin/quarto
#>
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#> ggtree * 3.16.3 2025-07-14 [1] bioc (@3.16.3)
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