无法正常绘制layout = "equal-angle"的tree

[SeanZhi]

HI 余老师：

在使用ggtree绘图的过程中，当我设置layout = "equal-angle"时出现了错误：

我使用的具体代码如下：

nwk <- "./p_dist_mat_fastme-tree.nwk"
tree <- read.tree(nwk)

tree <- groupOTU(tree,groupinfo)
ggtree(tree, layout="equal_angle",aes(color=group)) 

这是我的tree信息：

sessionInfo 如下：
R version 4.1.1 (2021-08-10)
Platform: x86_64-conda-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

Matrix products: default
BLAS/LAPACK: /data/own_disk/dazhi/tools/miniconda/envs/R_Python/lib/libopenblasp-r0.3.24.so

locale:
[1] LC_CTYPE=zh_CN.UTF-8 LC_NUMERIC=C
[3] LC_TIME=zh_CN.UTF-8 LC_COLLATE=zh_CN.UTF-8
[5] LC_MONETARY=zh_CN.UTF-8 LC_MESSAGES=zh_CN.UTF-8
[7] LC_PAPER=zh_CN.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=zh_CN.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] treeio_1.18.0 ggtree_3.2.0 ggplot2_3.5.0

loaded via a namespace (and not attached):
[1] Rcpp_1.0.12 pillar_1.9.0 compiler_4.1.1 yulab.utils_0.0.6
[5] base64enc_0.1-3 tools_4.1.1 aplot_0.1.10 digest_0.6.35
[9] uuid_1.2-0 tidytree_0.4.2 nlme_3.1-164 jsonlite_1.8.8
[13] evaluate_0.23 lifecycle_1.0.4 tibble_3.2.1 gtable_0.3.4
[17] lattice_0.22-5 pkgconfig_2.0.3 rlang_1.1.3 ggplotify_0.1.0
[21] IRdisplay_1.1 cli_3.6.2 patchwork_1.2.0 parallel_4.1.1
[25] IRkernel_1.3.2 fastmap_1.1.1 repr_1.1.6 withr_3.0.0
[29] dplyr_1.1.4 gridGraphics_0.5-1 generics_0.1.3 vctrs_0.6.5
[33] grid_4.1.1 tidyselect_1.2.1 glue_1.7.0 R6_2.5.1
[37] fansi_1.0.6 pbdZMQ_0.3-11 farver_2.1.1 purrr_1.0.2
[41] tidyr_1.3.1 magrittr_2.0.3 scales_1.3.0 htmltools_0.5.7
[45] colorspace_2.1-0 ape_5.7-1 labeling_0.4.3 utf8_1.2.4
[49] lazyeval_0.2.2 munsell_0.5.0 ggfun_0.0.9 crayon_1.5.2

不过当使用layout = "fan"可以正常得到结果，期待你的回复。