nullable UDChartData value

[augiaugi]

Describe the Issue

a nullable chart data is breaking the graph line and is not showing any values

To Reproduce

see the screenshot and code

Expected behavior

Screenshots

Script Sample

$Data = 1..10 |%{
    $Item = [PSCustomObject]@{
        Timestamp = (Get-Date).AddSeconds($_).ToString('yyyy.MM.dd HH:mm:ss.fff')
        Value = (Get-Random -Minimum 1 -Maximum 100)
        Value2 = $null
    }

    if($_ -in @(1,10))
    {
        $Item.Value2 =  (Get-Random -Minimum 1 -Maximum 100)
    }

    $Item
}

New-UDCard -Content {
    New-UDRow -Endpoint {
        New-UDColumn -LargeSize 6 -Content {
            New-UDTable -Title 'Data' -Headers @("Timestamp", "Value", "Value2") -Endpoint {
                $Data | %{Out-UDTableData -Data $_ -Property @("Timestamp", "Value", "Value2")}
            }        
        }
        New-UDColumn -LargeSize 6 -Content {
            New-UDChart -Title "Graph" -Type Line -Endpoint {
                $Data |  Out-UDChartData -LabelProperty "Timestamp" -Dataset @(
                    New-UdChartDataset -DataProperty "Value" -Label "Value" -BackgroundColor "#80962F23" -HoverBackgroundColor "#80962F23" 
                    New-UdChartDataset -DataProperty "Value2" -Label "Value2" -BackgroundColor "#8014558C" -HoverBackgroundColor "#8014558C"
                )
            } -Options @{elements = @{point = @{radius = 0}}; scales = @{yAxes = @(@{ticks = @{beginAtZero = $true}})}}
        }
    }
}

$Data2 = 1..10 |%{
    $Item = [PSCustomObject]@{
        Timestamp = (Get-Date).AddSeconds($_).ToString('yyyy.MM.dd HH:mm:ss.fff')
        Value = (Get-Random -Minimum 1 -Maximum 100)
        Value2 = $null
    }

    if($_ -in @(1,10))
    {
        $Item.Value = $null
        $Item.Value2 =  (Get-Random -Minimum 1 -Maximum 100)
    }

    $Item
}

New-UDCard -Content {
    New-UDRow -Endpoint {
        New-UDColumn -LargeSize 6 -Content {
            New-UDTable -Title 'Data' -Headers @("Timestamp", "Value", "Value2") -Endpoint {
                $Data2 | %{Out-UDTableData -Data $_ -Property @("Timestamp", "Value", "Value2")}
            }        
        }
        New-UDColumn -LargeSize 6 -Content {
            New-UDChart -Title "Graph" -Type Line -Endpoint {
                $Data2 |  Out-UDChartData -LabelProperty "Timestamp" -Dataset @(
                    New-UdChartDataset -DataProperty "Value" -Label "Value" -BackgroundColor "#80962F23" -HoverBackgroundColor "#80962F23" 
                    New-UdChartDataset -DataProperty "Value2" -Label "Value2" -BackgroundColor "#8014558C" -HoverBackgroundColor "#8014558C"
                )
            } -Options @{elements = @{point = @{radius = 0}}; scales = @{yAxes = @(@{ticks = @{beginAtZero = $true}})}}
        }
    }
}

Version Information

• Operating System: Windows 10
• PowerShell Version: 5.1.17763.771
• Universal Dashboard Version: 2.7.0
• UD Hosting Method: Powershell