DataFrame.LoadCsv 方法

參考

定義

命名空間:: Microsoft.Data.Analysis

組件:: Microsoft.Data.Analysis.dll

套件:: Microsoft.Data.Analysis v0.21.1

重要

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多載

LoadCsv(Stream, Char, Boolean, String[], Type[], Int64, Int32, Boolean, Encoding, Boolean, CultureInfo)	將 CSV 數據的可搜尋數據流讀取到 DataFrame。
LoadCsv(String, Char, Boolean, String[], Type[], Int32, Int32, Boolean, Encoding, Boolean, CultureInfo)	將文本文件讀取為 DataFrame。

LoadCsv(Stream, Char, Boolean, String[], Type[], Int64, Int32, Boolean, Encoding, Boolean, CultureInfo)

將 CSV 數據的可搜尋數據流讀取到 DataFrame。

public static Microsoft.Data.Analysis.DataFrame LoadCsv (System.IO.Stream csvStream, char separator = ',', bool header = true, string[] columnNames = default, Type[] dataTypes = default, long numberOfRowsToRead = -1, int guessRows = 10, bool addIndexColumn = false, System.Text.Encoding encoding = default, bool renameDuplicatedColumns = false, System.Globalization.CultureInfo cultureInfo = default);

static member LoadCsv : System.IO.Stream * char * bool * string[] * Type[] * int64 * int * bool * System.Text.Encoding * bool * System.Globalization.CultureInfo -> Microsoft.Data.Analysis.DataFrame

Public Shared Function LoadCsv (csvStream As Stream, Optional separator As Char = ',', Optional header As Boolean = true, Optional columnNames As String() = Nothing, Optional dataTypes As Type() = Nothing, Optional numberOfRowsToRead As Long = -1, Optional guessRows As Integer = 10, Optional addIndexColumn As Boolean = false, Optional encoding As Encoding = Nothing, Optional renameDuplicatedColumns As Boolean = false, Optional cultureInfo As CultureInfo = Nothing) As DataFrame

參數

csvStream: Stream

要讀取的 CSV 數據數據流

separator: Char

數據行分隔符

header: Boolean

具有標頭或不具有標頭

columnNames: String[]

數據行名稱 (可以是空的)

dataTypes: Type[]

數據行類型 (可以是空的)

numberOfRowsToRead: Int64

如果存在) ，則表示要讀取的數據列數目不包含標頭 (

guessRows: Int32

用來猜測類型的數據列數目

addIndexColumn: Boolean

使用數據列索引新增一個數據行

encoding: Encoding

字元編碼方式。如果未指定，預設為UTF8

renameDuplicatedColumns: Boolean

如果設定為 true，則會自動重新命名重複名稱的數據行。

cultureInfo: CultureInfo

格式化值的文化特性資訊

傳回

DataFrame

適用於

LoadCsv(String, Char, Boolean, String[], Type[], Int32, Int32, Boolean, Encoding, Boolean, CultureInfo)

將文本文件讀取為 DataFrame。

public static Microsoft.Data.Analysis.DataFrame LoadCsv (string filename, char separator = ',', bool header = true, string[] columnNames = default, Type[] dataTypes = default, int numRows = -1, int guessRows = 10, bool addIndexColumn = false, System.Text.Encoding encoding = default, bool renameDuplicatedColumns = false, System.Globalization.CultureInfo cultureInfo = default);

static member LoadCsv : string * char * bool * string[] * Type[] * int * int * bool * System.Text.Encoding * bool * System.Globalization.CultureInfo -> Microsoft.Data.Analysis.DataFrame

Public Shared Function LoadCsv (filename As String, Optional separator As Char = ',', Optional header As Boolean = true, Optional columnNames As String() = Nothing, Optional dataTypes As Type() = Nothing, Optional numRows As Integer = -1, Optional guessRows As Integer = 10, Optional addIndexColumn As Boolean = false, Optional encoding As Encoding = Nothing, Optional renameDuplicatedColumns As Boolean = false, Optional cultureInfo As CultureInfo = Nothing) As DataFrame

參數

filename: String

filename

separator: Char