Midpoint rooting of tree fails

[rdmpage]

Sometimes the midpoint rooting fails, e.g. searching for sequence ANTIC057-20

AAGGTTTCCGTAGGTGAACCTGCGGAAGGATCATTAATGAATAAAATTCGGCTTGTGGGA
AGGAGAGAGTTGTTGCTGGCCTTTTGGGCATGTGCACACTTTCTTTGGACTGCTTGTYGT
TTTTCATATCTTCACCCGTGCACTTAATGTAGGATGCCTCTCCTTTTGGGAGGGGGGACC
TATGTCTTCACAGACACCCCACAGTTTAGAAAGTCATAGAATGTTTACTATCGACGAGTC
GCGACTTCTAGGAGACGCGGGTCGGCGAGATAAAAGTTATTACAACTTTCAGCAATGGAT
CTCTTGGCTCTCGCATCGATGAAGAACGCAGCGAATTGCGATATGTAATGTGAATTGCAG
ATCTACAGTGAATCATCGAATCTTTGAACGCACATTGCGCTCCTCGGTGTTCCGAGGAGC
ATGCCTGTTTGAGTGTCAGAAAATTCTCAACCCCTCTTGATTTGTTTCAAGGGGGAGCTT
GGATAGTGGGGGCTGCCAGAGACCTGGACTAGCGTCTAGGACTTGGGCTCTCCTGAAATG
CATTGGCTTGCGTTGACTTTTGACTTTGCRCGACAAGGCTTTCGGTGTGATAATGATCGC
CGTCTTCCGAAGTGCATGACTAAAGGTTTCGTGCCTCTAATATGTCGACTGGAACTCTCT
TTTGGAGGGGGAAACGWCTTCCTTCTTTATGTTTGACCTCA

yields tree

(((((((((((((((GBBOL1286_13_Suillus_bovinus:0.00027,GBBOL1287_13_Suillus_bovinus:0.00027),(GBBOL1288_13_Suillus_bovinus:0.00027,GBBOL1289_13_Suillus_bovinus:0.00027)):-0.00000,(GBBOL1312_13_Suillus_bovinus:0.00027,GBBOL1313_13_Suillus_bovinus:0.00027):0.00000),((GBBOL1290_13_Suillus_bovinus:0.00027,GBBOL1291_13_Suillus_bovinus:0.00027),(GBBOL1292_13_Suillus_bovinus:0.00027,GBBOL1293_13_Suillus_bovinus:0.00027))),((GBBOL1294_13_Suillus_bovinus:0.00027,GBBOL1295_13_Suillus_bovinus:0.00027),(GBBOL1296_13_Suillus_bovinus:0.00027,GBBOL1297_13_Suillus_bovinus:0.00027))),((GBBOL1298_13_Suillus_bovinus:0.00027,GBBOL1299_13_Suillus_bovinus:0.00027),(GBBOL1317_13_Suillus_bovinus:0.00027,GBBOL1318_13_Suillus_bovinus:0.00027))),((GBBOL1319_13_Suillus_bovinus:0.00027,GBBOL1320_13_Suillus_bovinus:0.00027),(GBBOL1321_13_Suillus_bovinus:0.00027,GBBOL1322_13_Suillus_bovinus:0.00027))),((GBBOL1308_13_Suillus_bovinus:0.00027,GBBOL1309_13_Suillus_bovinus:0.00027),(GBBOL1310_13_Suillus_bovinus:0.00027,GBBOL1311_13_Suillus_bovinus:0.00027))),(GBBOL1314_13_Suillus_bovinus:0.00027,GBBOL1315_13_Suillus_bovinus:0.00027)),(GBBOL1316_13_Suillus_bovinus:0.00027,GBBOL1300_13_Suillus_bovinus:0.00027)),(GBBOL1301_13_Suillus_bovinus:0.00027,GBBOL1302_13_Suillus_bovinus:0.00027)),(GBBOL1303_13_Suillus_bovinus:0.00027,GBBOL1304_13_Suillus_bovinus:0.00027)),(GBBOL1305_13_Suillus_bovinus:0.00027,GBBOL1306_13_Suillus_bovinus:0.00027)),((GBBOL1284_13_Suillus_bovinus:0.00027,GBBOL1285_13_Suillus_bovinus:0.00027):-0.00000,GBBOL1307_13_Suillus_bovinus:0.00027)):0.00022,((((GBBOL1220_13:0.07613,((((ANTIC057_20_Gomphidius_maculatus:0.06731,(ECMCU078_10:0.06730,ANTIC088_20_Gomphidius_borealis:0.04264):0.00972):0.01536,(((((((GBBOL1086_13_Rhizopogon_roseolus:0.00627,(((GBBOL100_13_Rhizopogon_roseolus:0.00031,GBBOL1075_13_Rhizopogon_rubescens:0.00031):0.00256,GBBOL1336_13:0.00579):0.00525,GBBOL1340_13_Rhizopogon_roseolus:0.00105):0.00361):0.00573,GBBOL1216_13:0.00089):0.00904,GBBOL1074_13_Rhizopogon_sardous:0.02522):0.00586,GBBOL101_13_Rhizopogon_roseolus:0.02618):0.00407,(GBBOL075_13_Rhizopogon_sp._PtRA-37-6:0.01267,(GBBOL016_13_Rhizopogon_sp._SNFD32-2:0.02867,GBBOL061_13_Rhizopogon_sp._PtRC-7-3:0.00573):0.00378):0.00443):0.00555,(GBBOL1125_13:0.00899,GBBOL102_13_Rhizopogon_roseolus:0.01102):0.02192):0.00422,GBBOL1203_13_Rhizopogon_roseolus:0.04006):0.01954):0.00243,(((((GBBOL1079_13_Rhizopogon_pachydermus:0.03358,GBBOL1081_13_Rhizopogon_ochraceorubens:0.04302):0.01341,(GBBOL007_13_Rhizopogon_sp._SPtC6-2:0.00378,GBBOL036_13_Rhizopogon_sp._StBD22-1:0.01011):0.03166):0.01185,((((GBBOL019_13_Rhizopogon_sp._SNFC8-2:0.00097,GBBOL034_13_Rhizopogon_sp._SNFA30-1:0.00162):0.00037,GBBOL009_13_Rhizopogon_sp._SPtC30-4:0.00249):0.00040,GBBOL014_13_Rhizopogon_sp._SNFD46-2:0.00245):0.00365,GBBOL011_13_Rhizopogon_sp._SPtC21-1:0.00287):0.04956):0.02648,GBBOL1076_13_Rhizopogon_fragrans:0.04342):0.00790,(((((((GBBOL038_13_Rhizopogon_sp._StBC33-1:0.00030,GBBOL042_13_Rhizopogon_sp._StBD27-3:0.00030):0.00109,(GBBOL043_13_Rhizopogon_sp._StBB1-3:0.00042,GBBOL037_13_Rhizopogon_sp._StBD18-2:0.00082):0.00134):0.00065,GBBOL044_13_Rhizopogon_sp._StBA26-1:0.00101):0.00205,GBBOL041_13_Rhizopogon_sp._StBC29-1:0.00592):0.00441,GBBOL045_13_Rhizopogon_sp._MonD28-3:0.00528):0.02335,(GBBOL029_13_Rhizopogon_sp._SNFB14-1:0.01084,((GBBOL031_13_Rhizopogon_sp._SNFA47-1:0.00944,(GBBOL030_13_Rhizopogon_sp._SNFA9-1:0.00726,GBBOL021_13_Rhizopogon_sp._SNFC19-1:0.00422):0.00032):0.00173,GBBOL073_13_Rhizopogon_sp._PtRA-56:0.00337):0.00307):0.02261):0.00414,GBBOL1082_13_Rhizopogon_idahoensis:0.03306):0.01927):0.00761):0.00856,GBBOL1195_13_Paxillus_involutus:0.04407):0.00585):0.01498,((((GBBOL1338_13:0.00113,GBBOL1200_13_Suillus_luteus:0.00549):0.00707,ECMMX186_11:0.01331):0.01820,GBBOL1121_13_Suillus_luteus:0.00924):0.01518,(GBBOL1124_13:0.03627,GBBOL1339_13:0.02207):0.00657):0.02366):0.05564,(GBBOL1273_13_Suillus_bovinus:0.00300,(((((GBBOL1283_13_Suillus_bovinus:0.00027,GBBOL1274_13_Suillus_bovinus:0.00027),(GBBOL1281_13_Suillus_bovinus:0.00027,GBBOL1282_13_Suillus_bovinus:0.00027)),(GBBOL1275_13_Suillus_bovinus:0.00027,GBBOL1276_13_Suillus_bovinus:0.00027)),(GBBOL1277_13_Suillus_bovinus:0.00027,GBBOL1278_13_Suillus_bovinus:0.00027)),(GBBOL1279_13_Suillus_bovinus:0.00027,GBBOL1280_13_Suillus_bovinus:0.00027)):0.00002):0.00106):0.00129,(GBBOL1271_13_Suillus_bovinus:0.00027,GBBOL1272_13_Suillus_bovinus:0.00027):0.00231):0.00022);

tree.tre.txt distances.nexus.txt

[rdmpage]