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嗨,我有5个html源,我想在其中运行readHTMLTable
并存储结果。我可以做到这一点单独使用:R中的readHTMLTable在循环中抛出警告
readHTMLTable(iso.content[1],which=6)
readHTMLTable(iso.content[2],which=6)
.
.
但是把这个变成一个for
循环,当我得到:
library(XML)
> iso.table<-NULL
> for (i in 1:nrow(gene.iso)) {
+ iso.table[i]<-readHTMLTable(iso.content[i],which=6)
+ }
Warning messages:
1: In iso.table[i] <- readHTMLTable(iso.content[i], which = 6) :
number of items to replace is not a multiple of replacement length
2: In iso.table[i] <- readHTMLTable(iso.content[i], which = 6) :
number of items to replace is not a multiple of replacement length
3: In iso.table[i] <- readHTMLTable(iso.content[i], which = 6) :
number of items to replace is not a multiple of replacement length
4: In iso.table[i] <- readHTMLTable(iso.content[i], which = 6) :
number of items to replace is not a multiple of replacement length
5: In iso.table[i] <- readHTMLTable(iso.content[i], which = 6) :
number of items to replace is not a multiple of replacement length
所以我可以单独做到这一点,但不使用for
循环。我不打算用下一次迭代替换当前的数据,所以我不确定警告为什么会这样。
有什么想法?
感谢[[]]提示。 – brucezepplin 2014-09-04 08:06:34