Changing an array column name - arrays

Question

I have an array that contains NotePoperties that needs to be modified. When reading the array I need to do some code to figure out what the correct title for the array column should be.
This code is ready and works fine:
$Permissions | Get-Member | ? MemberType -EQ NoteProperty | % {
$Column = $Permissions.($_.Name)
$GroupResult = Switch ($Column[1]) {
'GROUP' {$Settings[0].Group + ' '}
'' {break}
Default {$group + ' '}
}
$SiteResult = Switch ($Column[0]) {
'Site' {$Settings[0].Code + ' '}
'' {break}
Default {$site + ' '}
}
$Result = ($GroupResult + $SiteResult + $_.Name).Trim()
}
What I'm now trying to do is update/modify the existing title with the generated $Result string from above:
$_.Name = $Result
When doing this, PowerShell throws the error 'Name' is a ReadOnly property..
What is the best way of changing the title of the array? I also need to remove line 2 and line 3, but I can do that afterwards.
Example of the $Permissions array where I'm trying to updated Plant manager to Belgium Awesome Plant manager:
Plant manager | Sales man | Warehouseman
-------------- ---------- -------------
Site | |
Group | Group |
Stuff | Stuff | Stuff
Thank you for your help.

Answer 1

Agreed that this is over-engineered, however you can modify the object in place.
Assuming your object array is $permissions, you can iterate over it, add a member of $result with value from property Plant manager and then remove the Plant manager property:
$permissions | % {
$_ | add-member "$result" -NotePropertyValue $_."Plant Manager"
$_.psobject.properties.remove("Plant Manager")
}

Answer 2

One option is to use Add-Member to add a new NoteProperty with the desired name, and copy the value from the existing one.
That being said, it seems like you're over-engineering this quite a bit.
How about a calculated property instead:
$Permissions = $Permissions |Select-Object #{Name="Belgium Awesome Plant Manager"; Expression = {$_.'Plant Manager'} },'Sales man','Warehouseman'

Answer 3

The ReadOnly attribute of the object property is going to be dictated by the object type. One way around this is to run the object thorugh Select *. This will change the object type to either a PSSelectedObject or PSCustomObject, depending on your PS version, and the property should lose the ReadOnly attribute in the process:
$Permissions | Get-Member | ? MemberType -EQ NoteProperty | Select * |% {

Answer 4

Instead of making a duplicate value with Add-Member you could also create an AliasProperty
Get-ChildItem c:\temp | Add-Member -MemberType AliasProperty -Name Measurement -Value Length -PassThru | select Measurement

Answer 5

($json | ConvertTo-csv).replace('"name"','"ServiceAccountName"') | ConvertFrom-csv | ConvertTo-Json
$json is an existing json array with a column name "name". I convert it to a csv file wherein the first line defines the columns and replace the "name" with "ServiceAccountName" and convert it back from csv to json