R语言的参数check.names有什么用

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R语言在读取数据 例如read.table 添加check.names=F 参数可以保证数据种特殊的字符正常读取：

如数据表头 "-"被认为是"."

> A=read.table("F:/test/WGCNA/data/fpkm/All.DEG_final_3000.xls",sep="\t",check.names=T,header=T)> head(A,2)         ID CK.WT.1 CK.WT.2 CK.WT.3 CK.tdr1.1 CK.tdr1.2 CK.tdr1.3  NaWT.1  NaWT.2  NaWT.31 AT1G01010 3.74149  7.3618 5.81734   5.71131   7.97054  10.37620 6.29949 5.55062 5.847792 AT1G01030 5.23528  2.7707 2.66859   3.22632   1.32105   1.96726 2.40259 3.23077 4.80378  Natdr1.1 Natdr1.2 Natdr1.3 Na.WT.1 Na.WT.2  Na.WT.3 Na.tdr1.1 Na.tdr1.2 Na.tdr1.31 15.58810 14.76360 17.74670 9.84943 7.97949 6.841060  13.29120  25.37000  19.599402  2.04301  2.29524  1.95286 1.83377 1.70757 0.809564   3.23172   1.80478   2.06044    SWT.1   SWT.2   SWT.3 Stdr1.1 Stdr1.2  Stdr1.31 4.96687 5.53349 3.18816 6.93650 7.88402 11.250402 8.49256 2.65564 2.25570 4.35298 4.52147  7.11351> A=read.table("F:/test/WGCNA/data/fpkm/All.DEG_final_3000.xls",sep="\t",check.names=F,header=T)> head(A,2)         ID CK-WT-1 CK-WT-2 CK-WT-3 CK-tdr1-1 CK-tdr1-2 CK-tdr1-3  NaWT-1  NaWT-2  NaWT-31 AT1G01010 3.74149  7.3618 5.81734   5.71131   7.97054  10.37620 6.29949 5.55062 5.847792 AT1G01030 5.23528  2.7707 2.66859   3.22632   1.32105   1.96726 2.40259 3.23077 4.80378  Natdr1-1 Natdr1-2 Natdr1-3 Na-WT-1 Na-WT-2  Na-WT-3 Na-tdr1-1 Na-tdr1-2 Na-tdr1-31 15.58810 14.76360 17.74670 9.84943 7.97949 6.841060  13.29120  25.37000  19.599402  2.04301  2.29524  1.95286 1.83377 1.70757 0.809564   3.23172   1.80478   2.06044    SWT-1   SWT-2   SWT-3 Stdr1-1 Stdr1-2  Stdr1-31 4.96687 5.53349 3.18816 6.93650 7.88402 11.250402 8.49256 2.65564 2.25570 4.35298 4.52147  7.11351

data.frame() 函数在进行数据框组合时也存在 字符变化，需要设置check.names=F

数据框：

> A1=A[,1:12]> head(A1,2)         ID CK-WT-1 CK-WT-2 CK-WT-3 CK-tdr1-1 CK-tdr1-2 CK-tdr1-3  NaWT-1  NaWT-2  NaWT-31 AT1G01010 3.74149  7.3618 5.81734   5.71131   7.97054  10.37620 6.29949 5.55062 5.847792 AT1G01030 5.23528  2.7707 2.66859   3.22632   1.32105   1.96726 2.40259 3.23077 4.80378  Natdr1-1 Natdr1-21 15.58810 14.763602  2.04301  2.29524> A2=A[,13:24]> head(A2,2)  Natdr1-3 Na-WT-1 Na-WT-2  Na-WT-3 Na-tdr1-1 Na-tdr1-2 Na-tdr1-3   SWT-1   SWT-2   SWT-31 17.74670 9.84943 7.97949 6.841060  13.29120  25.37000  19.59940 4.96687 5.53349 3.188162  1.95286 1.83377 1.70757 0.809564   3.23172   1.80478   2.06044 8.49256 2.65564 2.25570  Stdr1-1 Stdr1-21 6.93650 7.884022 4.35298 4.52147

组合：

> B=data.frame(A1,A2)> head(B,2)         ID CK.WT.1 CK.WT.2 CK.WT.3 CK.tdr1.1 CK.tdr1.2 CK.tdr1.3  NaWT.1  NaWT.2  NaWT.31 AT1G01010 3.74149  7.3618 5.81734   5.71131   7.97054  10.37620 6.29949 5.55062 5.847792 AT1G01030 5.23528  2.7707 2.66859   3.22632   1.32105   1.96726 2.40259 3.23077 4.80378  Natdr1.1 Natdr1.2 Natdr1.3 Na.WT.1 Na.WT.2  Na.WT.3 Na.tdr1.1 Na.tdr1.2 Na.tdr1.31 15.58810 14.76360 17.74670 9.84943 7.97949 6.841060  13.29120  25.37000  19.599402  2.04301  2.29524  1.95286 1.83377 1.70757 0.809564   3.23172   1.80478   2.06044    SWT.1   SWT.2   SWT.3 Stdr1.1 Stdr1.21 4.96687 5.53349 3.18816 6.93650 7.884022 8.49256 2.65564 2.25570 4.35298 4.52147> B=data.frame(A1,A2,check.names=F)> head(B,2)         ID CK-WT-1 CK-WT-2 CK-WT-3 CK-tdr1-1 CK-tdr1-2 CK-tdr1-3  NaWT-1  NaWT-2  NaWT-31 AT1G01010 3.74149  7.3618 5.81734   5.71131   7.97054  10.37620 6.29949 5.55062 5.847792 AT1G01030 5.23528  2.7707 2.66859   3.22632   1.32105   1.96726 2.40259 3.23077 4.80378  Natdr1-1 Natdr1-2 Natdr1-3 Na-WT-1 Na-WT-2  Na-WT-3 Na-tdr1-1 Na-tdr1-2 Na-tdr1-31 15.58810 14.76360 17.74670 9.84943 7.97949 6.841060  13.29120  25.37000  19.599402  2.04301  2.29524  1.95286 1.83377 1.70757 0.809564   3.23172   1.80478   2.06044    SWT-1   SWT-2   SWT-3 Stdr1-1 Stdr1-21 4.96687 5.53349 3.18816 6.93650 7.884022 8.49256 2.65564 2.25570 4.35298 4.52147

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