我正在尝试合并两个具有不同行数但匹配行名的数据框。这是我所拥有的：
> head(counts.0hpi$counts)
r1 r2 r3 r4 r5
Cluster_1 588.148 621.756 596.124 618.485 590.202
Cluster_10 469.730 509.523 523.748 476.219 518.317
Cluster_1000 117.801 115.956 121.915 95.635 123.563
Cluster_10000 519.337 477.910 486.273 477.311 498.591
Cluster_10001 385.777 382.447 393.380 366.418 389.452
Cluster_10002 10.000 17.000 7.000 14.000 10.000
> head(counts.72hpi$counts)
r1 r2 r3 r4 r5
Cluster_1 35.083 31.018 39.044 32.033 26.045
Cluster_10 132.370 120.348 100.381 109.481 117.742
Cluster_100 67.274 77.491 56.541 56.527 56.630
Cluster_10000 39.784 32.709 24.529 25.004 23.961
Cluster_10001 6.000 6.000 10.000 9.000 10.000
Cluster_10002 4.904 7.963 4.000 4.000 7.962
> all <- merge(counts.0hpi$counts, counts.72hpi$counts, by = union(rownames(counts.0hpi$counts), rownames(counts.72hpi$counts)))
Error in fix.by(by.x, x) : 'by' must specify uniquely valid columns
我怎么了？非常感谢