Question

我在计算（PowerShell）txt文件中以下数据的平均值时遇到问题。

First row  =  EPOCH Time 
Second row =  Response time (milliseconds)
Third row  =  Name

1451603439,297,NA
1451603440,203,NA
1451604606,328,OP
1451604645,203,NA
1451604646,234,NC
1451604647,234,NA
1451604647,202,NA
1451604649,234,NA
1451604650,187,NA
1451604651,195,OP
1451604652,245,NA
1451604653,203,NA
1451604653,218,NA
1451604654,234,OP
1451604655,203,NA
1451604656,187,NA
1451604657,156,NA
1451604658,171,NA
1451604658,187,NA
1451604659,156,NA
1451604660,218,NA

我想计算每个名字每天的平均响应时间。

我面临的问题是我首先必须将时期计算到正常日期。然后获取一天中的所有值并获取每个名称的平均响应时间，然后将其保存到另一个文件并重复此步骤直到文件结束。

Answer 1

尝试这样的事情：

$origin = New-Object -Type DateTime -ArgumentList 1970, 1, 1, 0, 0, 0, 0

import-csv "C:\temp\file.TXT" -Header ColDate, ColNum, ColCode | 
    select ColNum, ColCode, @{N="ColDate"; E={$origin.AddSeconds($_.ColDate).Date }} | 
        group ColDate, ColCode  | 
            select Name, @{N="ColAverage";E={($_.Group.ColNum | Measure-Object -Average).Average}}

Answer 2

请找到可能的解决方案。此外，代码中还有一些注释，因此我们知道代码的每个部分正在做什么

#We get records from the file response.txt containing the format stuff,reponse-time,name
$file = Get-Content response.txt
#We create an array
$arr = [System.Collections.ArrayList]@()
#We will put each value separated by , into an object and will add each object in the array
Foreach ($result in $file) {
$tmp = $result.Split(",")
$obj = $null
$obj = New-Object System.Object
$obj | Add-Member -type NoteProperty -Name stuff -Value $tmp[0]
$obj | Add-Member -type NoteProperty -Name response -Value $tmp[1]
$obj | Add-Member -type NoteProperty -Name name -Value $tmp[2]
$arr += $obj
}
#We sort the array by name
$arr = $arr | Sort-Object name
$start=0
$i = 0
#we calculate average for each name until we reach the end of the array
while ($arr[$start]){
    $counter=0
    $tmpName=$arr[$start].name
    $time=0
    for($i=$start; $arr[$i].name -eq $tmpName; $i++,$counter++){
        $time+=$arr[$i].response
    }
    Write-Host "Average time for all "$counter" records with name "$tmpName" is "($time/$counter)
    $start=$i
}

从EPOCH时间戳计算PowerShell中的平均值

2 个答案: