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我正在尝试csv使用 Revolution Analytics 导入文件。

我的代码如下:

rxImport(inData = mycsv, outFile =myXdf,type="text", colClasses=c('character','character','character','character',
'character','character' ,'character','logical','logical','logical','logical', 'logical','logical','logical', 'logical','logical','logical' ,'numeric','numeric', 'numeric')) 

在启动代码之前我注意删除myXdf并使用扫描前 1000 个元素来定义 vector colClasses

它给了我以下错误:

Error in validObject(.Object) : 
  invalid class “RxTextData” object: 'colClasses' must be a named character vector

有人已经遇到过这个错误吗?

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1 回答 1

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要为文本数据对象指定列类,您需要将列名添加为命名向量。

尝试这样的事情:

# Read first few lines of csv to determine column names
x <- read.csv(mycsv, nrow=5)

# Define desired column classes
colClasses=c('character','character','character','character', 'character','character' ,'character','logical','logical', 'logical','logical', 'logical','logical','logical', 'logical','logical','logical' ,'numeric','numeric', 'numeric')

# Assign csv column names
names(colClasses) <- names(x)

# Define input object
input <- RxTextData(mycsv, colClasses = colClasses)

# Import the data
rxImport(input, myxdf)
于 2014-12-13T08:04:03.040 回答