R 如何从不同的文件中提取相同的数据

为了从qiime2工件中提取频率表并将其写入tsv输出，您必须：

rel_freq_table <- read_qza("05.TaxonomyClassification/rel_freq/1_rel_freq_table.qza")
rel_freq_table <- data.frame(rel_freq_table$data)
rel_freq_table <-  setDT(rel_freq_table, keep.rownames = TRUE )
colnames(rel_freq_table)[1]<- c( "Feature.ID" )
write.table(rel_freq_table, file = "1_rel_freq_table.tsv", row.names = FALSE, dec = ",")

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rel\u freq\u table您可以编写一个函数，并使用
lappy
将其应用于每个文件：

read_qiime2_write_tsv <- function(filename) {
  rel_freq_table <- read_qza(filename)
  rel_freq_table <- data.frame(rel_freq_table$data)
  rel_freq_table <-  setDT(rel_freq_table, keep.rownames = TRUE )
  colnames(rel_freq_table)[1]<- c( "Feature.ID" )
  write.table(rel_freq_table, 
          file = paste0(tools::file_path_sans_ext(basename(filename)), '.tsv'), 
          row.names = FALSE, dec = ",")
}

lapply(rel_freqs, read_qiime2_write_tsv)

read\u qiime2\u write\u tsv
read_qiime2_write_tsv <- function(filename) {
  rel_freq_table <- read_qza(filename)
  rel_freq_table <- data.frame(rel_freq_table$data)
  rel_freq_table <-  setDT(rel_freq_table, keep.rownames = TRUE )
  colnames(rel_freq_table)[1]<- c( "Feature.ID" )
  write.table(rel_freq_table, 
          file = paste0(tools::file_path_sans_ext(basename(filename)), '.tsv'), 
          row.names = FALSE, dec = ",")
}

lapply(rel_freqs, read_qiime2_write_tsv)