Question

我有一个看起来像这样的Csv：

$x

我首先需要做的是使用Netweight列进行一些数学计算得到两个值，$y和$x。然后我需要将Csv中的每一行拆分为"AL,$y"行数据，其中每行数据看起来都像$x

在下面的示例中，我成功获得了每行的$y和$x值。尝试将每行拆分为$fileContent = Import-Csv $File $x = ( $fileContent | ForEach-Object { ( [System.Math]::Round( $_.Netweight /25000 ) ) } ) $y = ( $fileContent | ForEach-Object { $_.Netweight / ( [System.Math]::Round( $_.Netweight /25000 ) ) } ) $NumRows = ( $fileContent | ForEach-Object { (1..$x) } ) $rows = ( $NumRows | ForEach-Object { "Al,$y" } )行时出现问题...：

$x = 8 and $y = 20

当Csv中有一行数据时，此代码可以正常工作。即如果"AL,20"，它将返回8行数据，看起来像Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Int32".。但是，当Csv中有多行时，我收到一条错误消息：

euro <- "€"
eurosearch <- "services as defined in this SOW at a price of € 15,896.80 (if executed fro"
sub(paste0("^.*", gsub("([^A-Za-z_0-9])", "\\\\\\1", euro), "\\s*(\\S+).*"), "\\1", eurosearch)

euro <- "$"
eurosearch <- "services as defined in this SOW at a price of $ 25,196.4 (if executed fro"
sub(paste0("^.*", gsub("([^A-Za-z_0-9])", "\\\\\\1", euro), "\\s*(\\S+).*"), "\\1", eurosearch)

我希望我已经解释说好了，感谢任何帮助。谢谢，约翰

Answer 1

而不是一遍又一遍地使用ForEach-Object，只需迭代csv一次，然后一次生成一个$x和$y个结果：

$fileContent = @'
No,BundleNo,Grossweight,Pieces,Tareweight,Netweight
1,Q4021317/09,193700,1614,646,193054
2,Q4021386/07,206400,1720,688,205712
'@ | ConvertFrom-Csv

foreach($line in $fileContent){
    $x = [System.Math]::Round( $line.Netweight / 25000 )
    if($x -ne 0){
        $y = $line.Netweight / $x
        1..$x |ForEach-Object {"AL,$y"}
    }
}

每行产生$x个"AL,$y"个字符串：

AL,24131.75
AL,24131.75
AL,24131.75
AL,24131.75
AL,24131.75
AL,24131.75
AL,24131.75
AL,24131.75
AL,25714
AL,25714
AL,25714
AL,25714
AL,25714
AL,25714
AL,25714
AL,25714

在PowerShell中将Csv的一行拆分为多行

1 个答案: