我有一个数据框：
Name Cummu.Score Call
ADAM metallopeptidase domain 32 -2 A
cartilage intermediate layer protein 2 -2 A
chemokine (C-C motif) ligand 5 6 P
cytochrome P450, family 2, subfamily E -2 A
discoidin domain receptor tyrosine kinase 1 2 P
EPH receptor B3 2 P
guanylate cyclase activator 1A (retina) -2 A
heat shock 70kDa protein 6 (HSP70B') 2 P
matrix metallopeptidase 14 (membrane-inserted) 2 P
mitogen-activated protein kinase 1 4 P
paired box 8 4 P
paired box 8 2 P
phosphatidylinositol glycan anchor biosynthesis, 2 P
proline rich 22 -4 A
protein tyrosine phosphatase, non-receptor type 21 -2 A
replication factor C (activator 1) 2, 40kDa 4 P
spermatogenesis associated 17 -2 A
thyroid hormone receptor, alpha 0 0
transmembrane protein 196 -2 A
ubiquitin-like modifier activating enzyme 7 4 P
ubiquitin-like modifier activating enzyme 7 2 P
WAP four-disulfide core domain 2 0 0
使用d2=d2[ order(d2[,2],decreasing=TRUE),]对数据框d2进行排序后，我的数据框如下所示：
Gene Name Cummu.Score Call
chemokine (C-C motif) ligand 5 6 P
mitogen-activated protein kinase 1 4 P
paired box 8 4 P
replication factor C (activator 1) 2, 40kDa 4 P
ubiquitin-like modifier activating enzyme 7 4 P
discoidin domain receptor tyrosine kinase 1 2 P
EPH receptor B3 2 P
heat shock 70kDa protein 6 (HSP70B') 2 P
matrix metallopeptidase 14 (membrane-inserted) 2 P
paired box 8 2 P
phosphatidylinositol glycan anchor 2 P
ubiquitin-like modifier activating enzyme 7 2 P
thyroid hormone receptor, alpha 0 0
WAP four-disulfide core domain 2 0 0
proline rich 22 -4 A
ADAM metallopeptidase domain 32 -2 A
cartilage intermediate layer protein 2 -2 A
cytochrome P450, family 2, subfamily E 1 -2 A
guanylate cyclase activator 1A (retina) -2 A
protein tyrosine phosphatase, non-receptor type -2 A
spermatogenesis associated 17 -2 A
transmembrane protein 196 -2 A
但是这里有一些问题。正如您在排序数据框中可以看到的那样，首先给出-4，然后给出-2。对于负值，它没有排序。如何解决这个问题。提前谢谢。