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[英]How to optimize Read and Write to subsections of a matrix in R (possibly using data.table)
[英]How to read a data table into R as a matrix
此代碼直接來自Bioconductor插圖,用於創建表達式集( http://www.bioconductor.org/packages/2.12/bioc/vignettes/Biobase/inst/doc/ExpressionSetIntroduction.pdf )。
> exprs <- as.matrix(read.table(exprsFile, header=TRUE, sep = "\t",
+ row.names = 1,
+ as.is=TRUE))
任何人都可以告訴為什么此代碼生成以下錯誤消息?
> exprs <- as.matrix(read.table(exprsFile, header=TRUE, sep = "\t",
+ row.names = 1,
Error: unexpected '=' in:
"exprs <- as.matrix(read.table(exprsFile, header=TRUE, sep = "\t",
+ row.names ="
> + as.is=TRUE))
Error: unexpected ')' in " + as.is=TRUE)"
或者,您能否建議另一種方法將文件exprsFile讀入帶有標題的矩陣?
非常感謝您的寶貴時間。
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