请问一下这个数据怎么提取最大的前10位，这个gain是数据，显示是numeric类型，但是order后出现的不知道是按什么排的，想要提取表达量最高的10个基因，不知道如何操作
order(GAIN,decreasing = TRUE)
[1] 38 55 37 25 2 54 10 9 57 35 20 42 36 18 61 34 17 16 19 39 58 59 60 67 1
[26] 26 27 7 40 32 23 28 5 43 24 53 15 21 3 12 8 22 13 52 66 4 11 31 62 49
[51] 41 56 29 33 30 6 46 48 47 63 45 64 44 14 65 51 50
> GAIN
SLC2A1 MUC1 RRM2 LPIN1 SLC1A4 DPP4 HSPD1 MAP2
5.877034 15.280289 4.159132 3.707052 4.972875 2.531646 5.424955 3.887884
TP63 TFRC IDUA MAPK10 SLC7A11 PAM EGR1 DUSP1
11.844485 12.567812 3.707052 3.978300 3.797468 1.627486 4.339964 6.781193
VEGFA MYB MAP3K5 ESR1 CYCS MET HILPDA KCNH2
6.871609 7.594937 6.781193 9.674503 4.339964 3.887884 5.063291 4.792043
MTDH VLDLR IL33 CA9 NTRK2 TXN TLR4 CDK1
15.370705 5.605787 5.515371 5.063291 2.893309 2.712477 3.707052 5.334539
TH WT1 SLC3A2 BAD CCS CCND1 GAPDH KRAS
2.893309 7.052441 9.945750 8.589512 17.992767 28.028933 6.781193 5.424955
NOS1 FLT3 CDKN3 FOS NGB ACTC1 CHAC1 DUOX2
3.526221 9.041591 4.882459 1.717902 1.989150 2.350814 2.169982 2.350814
SLC7A5 ACADVL ALOX15B BRCA1 MAPT NGFR BIRC5 PRNP
3.616637 1.446655 1.537071 3.797468 4.611212 13.471971 19.258590 3.435805
AURKA CBS CSTB TRPM2 S100B XBP1 MAOA MAOB
11.211573 6.509946 6.509946 6.509946 7.142857 3.707052 2.079566 1.898734
PGK1 AIFM1 G6PD
1.627486 3.797468 6.148282
> class（GAIN)
Error: unexpected input in "class（"
> class(GAIN)
[1] "numeric"
