关于命名方面的问题，用R编辑文本

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有一个问题，Dna.CO1.raw是一个变量，是个list，当我输入Dna.CO1.raw[1]的时候，得到下面的data
>Dna.CO1.raw[1]$`gi|507180915|gb|KC132826.1| Trichophya pilicornis voucher ZMUN:10008478 cytochrome oxidase subunit 1 (CO1) gene, partial cds; tRNA-Leu (Leu2) gene, complete sequence; and cytochrome oxidase subunit 2 (CO2) gene, partial cds; mitochondrial`
   [1] "g" "g" "a" "a" "t" "a" "g" "t" "a" "g" "g" "a" "a" "c" "t" "t" "c" "c" "t" "t" "a" "a"
  [23] "g" "t" "t" "t" "a" "t" "t" "a" "a" "t" "t" "c" "g" "a" "g" "c" "a" "g" "a" "a" "t" "t"
  [45] "a" "g" "g" "a" "a" "a" "c" "c" "c" "t" "g" "g" "a" "t" "c" "a" "t" "t" "a" "a" "t" "t"
  [67] "g" "g" "a" "g" "a" "t" "g" "a" "t" "c" "a" "a" "a" "t" "t" "t" "a" "t" "a" "a" "t" "g"
  [89] "t" "a" "a" "t" "c" "g" "t" "c" "a" "c" "t" "g" "c" "a" "c" "a" "t" "g" "c" "t" "t" "t"
[111] "t" "g" "t" "a" "a" "t" "a" "a" "t" "t" "t" "t" "t" "t" "t" "t" "a" "t" "a" "g" "t" "t"
[133] "a" "t" "a" "c" "c" "a" "a" "t" "t" "g" "t" "t" "a" "t" "t" "g" "g" "a" "g" "g" "a" "t"
[155] "t" "t" "g" "g" "a" "a" "a" "t" "t" "g" "a" "t" "t" "a" "g" "t" "c" "c" "c" "c" "t" "t"
[177] "a" "a" "t" "a" "t" "t" "a" "g" "g" "a" "g" "c" "c" "c" "c" "t" "g" "a" "t" "a" "t" "a"
[199] "g" "c" "t" "t" "t" "c" "c" "c" "t" "c" "g" "a" "a" "t" "a" "
。。
。。。
。。


然后我输入Dna.CO1.raw[[1]]时，得到
[1] "g" "g" "a" "a" "t" "a" "g" "t" "a" "g" "g" "a" "a" "c" "t" "t" "c" "c" "t" "t" "a" "a"
  [23] "g" "t" "t" "t" "a" "t" "t" "a" "a" "t" "t" "c" "g" "a" "g" "c" "a" "g" "a" "a" "t" "t"
  [45] "a" "g" "g" "a" "a" "a" "c" "c" "c" "t" "g" "g" "a" "t" "c" "a" "t" "t" "a" "a" "t" "t"
  [67] "g" "g" "a" "g" "a" "t" "g" "a" "t" "c" "a" "a" "a" "t" "t" "t" "a" "t" "a" "a" "t" "g"
  [89] "t" "a" "a" "t" "c" "g" "t" "c" "a" "c" "t" "g" "c" "a" "c" "a" "t" "g" "c" "t" "t" "t"
[111] "t" "g" "t" "a" "a" "t" "a" "a" "t" "t" "t" "t" "t" "t" "t" "t" "a" "t" "a" "g" "t" "t"
[133] "a" "t" "a" "c" "c" "a" "a" "t" "t" "g" "t" "t" "a" "t" "t" "g" "g" "a" "g" "g" "a" "t"
[155] "t" "t" "g" "g" "a" "a" "a" "t" "t" "g" "a" "t" "t" "a" "g" "t" "c" "c" "c" "c" "t" "t"
[177] "a" "a" "t" "a" "t" "t" "a" "g" "g" "a" "g" "c" "c" "c" "c" "t" "g" "a" "t" "a" "t" "a"
[199] "g" "c" "t" "t" "t" "c" "c" "c" "t" "c" "g" "a" "a" "t" "a" "a" "a" "c" "a" "a" "t" "a"
[221] "t" "a" "a" "g" "a" "t" "t" "t" "t" "g" "a" "c" "t" "a" "t" "t" "a" "c" "c" "c" "c" "c"
[243] "t" "t" "c" "t" "t" "t" "a" "a" "c" "t" "t" "t" "a" "t" "t" "a" "t" "t" "a" "a" "t" "a"
[265] "a" "g" "a" "a" "g" "a" "a" "t" "a" "g" "t" "t" "g" "a" "a" "a" "g" "a" "g" "g" "g" "g"
[287] "c" "a" "g" "g" "g" "a" "c" "t" "g" "g" "a" "t" "g" "a" "a" "c" "t" "g" "t" "t" "t" "a"
[309] "t" "c" "c" "t" "c" "c" "c" "c" "t" "c" "t" "c" "t" "t" "c" "t" "a" "a" "t" "a" "t" "t"
[331] "g" "c" "t" "c" "a" "t" "g" "g" "a" "g" "g" "a" "g"



现在我想要直接得到$`gi|507180915|gb|KC132826.1| Trichophya pilicornis voucher ZMUN:10008478 cytochrome oxidase subunit 1 (CO1) gene, partial cds; tRNA-Leu (Leu2) gene, complete sequence; and cytochrome oxidase subunit 2 (CO2) gene, partial cds; mitochondrial`
这串字符串，不知道应该怎么做？？？？？
求教大神！！
谢谢

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关键词：sequence Complete Partial Chrome CHROM 命名

names(Dna.CO1.raw)

qoiqpwqr 发表于 2014-12-3 03:36
names(Dna.CO1.raw)

成功了，谢谢，确实大牛 啊

对于这样的数据，用Perl语言不是很快吗？

搞清楚数据结构，你所需要处理的类型是R语言里面的list类型数据，R所谓的面向对象，也就是它有属性，包括长度，名称等；而这些都有对应的函数来得到你需要的东西。

所以建议里先搞清楚数据结构的一些基本特点：
vector,data.frame,list,matrix等，不然下一次是一个data.frame，你不知道怎么得到维度，你还要继续到论坛上来提问。

我很好奇楼主是怎么得到这个变量的。。。直接读入一个DNA序列文本吗？

曲散人终 发表于 2014-12-3 11:01
我很好奇楼主是怎么得到这个变量的。。。直接读入一个DNA序列文本吗？

genBank 上直接下载fasta格式的序列文件，然后read.dna

jiangbeilu 发表于 2014-12-3 10:39
搞清楚数据结构，你所需要处理的类型是R语言里面的list类型数据，R所谓的面向对象，也就是它有属性，包括长 ...

有道理，不过好像对于这些，R的书籍描述的也不是很详细，所以有些细节问题可能还处理不了

xucaifeng66 发表于 2014-12-3 16:52
genBank 上直接下载fasta格式的序列文件，然后read.dna

谢谢{:2_31:}

xucaifeng66 发表于 2014-12-3 16:52
genBank 上直接下载fasta格式的序列文件，然后read.dna

不好意思，再请问一下：read.dna()是哪个包中的函数。。。