code.ps1

Import-Module Graphical

# inputs
$WarningPreference = 'SilentlyContinue'
$TimeGrain = [timespan]::FromMinutes(1)
$MetricName = 'Percentage CPU' 
$ResourceName = 'MyVM'
$Start = [datetime]::Now.AddMinutes(-90)
$End = [datetime]::Now.AddMinutes(-45)

# capture resource metrics
$ResourceID = (Get-AzResource -ResourceName $ResourceName).ResourceId 

$Splat = @{
    ResourceId = $ResourceID 
    MetricName = $MetricName 
    TimeGrain = $TimeGrain 
    StartTime = $Start
    EndTime = $End
}
$Data = Get-AzMetric @Splat
$Datpoints = $data.data.average.foreach({[int]$_})

# plot the graph
Show-Graph -Datapoints $Datpoints -GraphTitle $MetricName -YAxisStep 5 
Show-Graph -Datapoints $Datpoints -GraphTitle $MetricName -YAxisStep 5 -Type Line
Show-Graph -Datapoints $Datpoints -GraphTitle $MetricName -YAxisStep 5 -Type Scatter