我很难理解为什么我的phylo树(从QIIME2作为phyloseq对象导入)在phylosig()中使用时似乎没有分支长度。与单个连续元数据变量相比，我正在尝试计算我的16 s数据集的系统发育信号。所有示例数据集都包含在这个问题的底部。
代码语言：javascript复制 glacialpath <- metadata[,c(7)]
phylosig(phylo, glacialpath, method = "K", test = TRUE)
Error in vcv.phylo(tree) : the tree has no branch lengths
In addition: Warning message:
In drop.tip(tree, setdiff(tree$tip.label, names(x))) :
drop all tips of the tree: returning NULL我的树phylo与一个完整的phyloseq对象phylo <- phy_tree(physeq = physeq)分离，并确认了分支长度：
代码语言：javascript复制Phylogenetic tree with 1290 tips and 1289 internal nodes.
Tip labels:
e54924083c02bd088c69537d02406eb8, 3112899fc7a2adb7f74a081a82c7cde4, db5d745b02355b6fed513c4953b62326, 2faf2046aa9ab2f6598df79cd52e9c7b, bec8db81cc8ec453136c82ede8327a9f, 601e47b8adcbd21d159f74421710e1b5, ...
Node labels:
0.942, 0.563, 0.711, 0.999, 0.000, 0.528, ...
Rooted; includes branch lengths.dput() of phylo太大，不能包含，所以希望我提供的内容足够了。任何帮助都是非常感谢的。
代码语言：javascript复制> dput (metadata)
structure(list(sample = structure(1:48, .Label = c("sample-10",
"sample-11", "sample-12", "sample-14", "sample-16", "sample-18",
"sample-19", "sample-20", "sample-21", "sample-22", "sample-23",
"sample-24", "sample-25", "sample-26", "sample-27", "sample-28",
"sample-29", "sample-30", "sample-31", "sample-32", "sample-33",
"sample-34", "sample-35", "sample-36", "sample-37", "sample-40",
"sample-41", "sample-43", "sample-44", "sample-45", "sample-46",
"sample-50", "sample-55", "sample-56", "sample-57", "sample-58",
"sample-59", "sample-61", "sample-62", "sample-63", "sample-64",
"sample-65", "sample-67", "sample-68", "sample-69", "sample-70",
"sample-71", "sample-8"), class = "factor"), pond = structure(c(1L,
1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L, 3L, 3L,
3L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 5L,
5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 5L, 1L), .Label = c("Lilly",
"RHM1", "RHM2", "SS", "TS"), class = "factor"), meh = structure(c(16L,
17L, 19L, 4L, 1L, 16L, 18L, 20L, 3L, 5L, 7L, 10L, 11L, 22L, 1L,
2L, 14L, 16L, 18L, 20L, 3L, 5L, 7L, 10L, 1L, 15L, 16L, 18L, 19L,
20L, 21L, 8L, 1L, 2L, 14L, 15L, 16L, 18L, 19L, 20L, 21L, 3L,
5L, 6L, 9L, 12L, 13L, 1L), .Label = c("0-1", "1-2.", "10-11.",
"11-12.", "12-13.", "13-14.5", "14-15", "14-16.", "14.5-17.5",
"16-17", "17-19", "17.5-18.5", "18.5-20", "2-3.", "3-4.", "4-5.",
"5-6.", "6-7.", "7-8.", "8-9.", "9-10.", "9-11."), class = "factor"),
depth = c(4, 5, 7, 11, 0, 4, 6, 8, 10, 12, 14, 16, 17, 9,
0, 1, 2, 4, 6, 8, 10, 12, 14, 16, 0, 3, 4, 6, 7, 8, 9, 14,
0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 12, 13, 14, 19, 18, 0), om = structure(c(29L,
13L, 9L, 9L, 27L, 27L, 26L, 26L, 23L, 23L, 12L, 12L, 20L,
34L, 24L, 24L, 22L, 22L, 25L, 25L, 21L, 21L, 11L, 11L, 8L,
7L, 5L, 3L, 3L, 2L, 1L, 4L, 33L, 30L, 31L, 32L, 28L, 18L,
19L, 17L, 15L, 17L, 16L, 14L, 18L, 19L, 10L, 6L), .Label = c("1.2",
"1.3", "1.4", "1.5", "1.7", "19.9", "2.1", "2.6", "2.8",
"2.9", "27.9", "29.8", "3.2", "3.3", "3.4", "3.5", "3.6",
"3.7", "3.8", "30.2", "30.6", "32.1", "32.5", "32.6", "32.9",
"35.7", "36.2", "4.2", "4.3", "5.4", "5.8", "6", "6.4", "na"
), class = "factor"), water = structure(c(19L, 16L, 12L,
13L, 28L, 28L, 35L, 35L, 30L, 30L, 31L, 31L, 28L, 36L, 27L,
27L, 33L, 33L, 34L, 34L, 31L, 31L, 29L, 29L, 20L, 21L, 15L,
5L, 3L, 2L, 1L, 4L, 26L, 23L, 24L, 25L, 22L, 13L, 14L, 7L,
8L, 9L, 11L, 10L, 17L, 18L, 6L, 32L), .Label = c("16.1",
"17", "17.5", "18.8", "21.6", "21.8", "22.3", "22.4", "22.6",
"22.7", "23.1", "23.6", "24.4", "24.5", "24.6", "25.5", "26.9",
"28", "29.1", "31.8", "32.8", "34.9", "40.5", "42.9", "43.2",
"50.9", "59", "60.1", "61.4", "61.5", "62.5", "62.9", "63.2",
"63.8", "66.4", "na"), class = "factor"), glacialpath = c(19.4,
19.4, 19.4, 19.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4,
6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4,
18.7, 18.7, 18.7, 18.7, 18.7, 18.7, 18.7, 18.7, 16.8, 16.8,
16.8, 16.8, 16.8, 16.8, 16.8, 16.8, 16.8, 16.8, 16.8, 16.8,
16.8, 16.8, 16.8, 19.4), elevation = c(8.2, 8.2, 8.2, 8.2,
18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3,
18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3, 18.3,
13.4, 13.4, 13.4, 13.4, 13.4, 13.4, 13.4, 13.4, 5.5, 5.5,
5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5, 5.5,
5.5, 8.2), area = c(20536L, 20536L, 20536L, 20536L, 3571L,
3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L,
3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L, 3571L,
3571L, 10369L, 10369L, 10369L, 10369L, 10369L, 10369L, 10369L,
10369L, 57003L, 57003L, 57003L, 57003L, 57003L, 57003L, 57003L,
57003L, 57003L, 57003L, 57003L, 57003L, 57003L, 57003L, 57003L,
20536L), tectonics = structure(c(1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L), .Label = c("outwash",
"uplift"), class = "factor"), lat = c(60.52, 60.52, 60.52,
60.52, 60.478, 60.478, 60.478, 60.478, 60.478, 60.478, 60.478,
60.478, 60.478, 60.478, 60.478, 60.478, 60.478, 60.478, 60.478,
60.478, 60.478, 60.478, 60.478, 60.478, 60.491, 60.491, 60.491,
60.491, 60.491, 60.491, 60.491, 60.491, 60.425, 60.425, 60.425,
60.425, 60.425, 60.425, 60.425, 60.425, 60.425, 60.425, 60.425,
60.425, 60.425, 60.425, 60.425, 60.52), long = c(145.601,
145.601, 145.601, 145.601, 145.382, 145.382, 145.382, 145.382,
145.382, 145.382, 145.382, 145.382, 145.382, 145.382, 145.382,
145.382, 145.382, 145.382, 145.382, 145.382, 145.382, 145.382,
145.382, 145.382, 145.547, 145.547, 145.547, 145.547, 145.547,
145.547, 145.547, 145.547, 145.473, 145.473, 145.473, 145.473,
145.473, 145.473, 145.473, 145.473, 145.473, 145.473, 145.473,
145.473, 145.473, 145.473, 145.473, 145.601), x.depth = c(1L,
1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L, 3L, 3L, 3L, 3L, 3L, 3L,
3L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L,
4L, 1L), y.depth = c(2L, 3L, 4L, 5L, 1L, 2L, 3L, 4L, 5L,
6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L,
19L, 20L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L, 3L, 4L,
5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 1L)), class = "data.frame", row.names = c(NA,
-48L))