Skip to content

Instantly share code, notes, and snippets.

@gravejester
Created May 10, 2015 19:11
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
Star You must be signed in to star a gist
Save gravejester/17dbc2436e2e245f67d1 to your computer and use it in GitHub Desktop.
function Convert-Temperature {
<#
.SYNOPSIS
Convert between different units of temperature.
.DESCRIPTION
This functions lets you convert between different units of temperature. You choose the
unit you want to convert from, and the output will include an object with the value
converted to all supported units. Supported units are 'Celsius', 'Fahrenheit', 'Kelvin',
'Rankine', 'Delisle', 'Newton', 'Réaumur' and 'Rømer'.
.EXAMPLE
Convert-Temperature -Value 35 -From Celsius
.NOTES
Author: Øyvind Kallstad
Date: 10.05.2015
Version: 1.0
.LINK
http://en.wikipedia.org/wiki/Conversion_of_units_of_temperature
#>
[CmdletBinding()]
param (
# The value you want to convert.
[Parameter(Position = 0, ValueFromPipeline)]
[ValidateRange([double]::MinValue,[double]::MaxValue)]
[double] $Value,
# The unit you want to convert from. Available units are 'Celsius', 'Fahrenheit', 'Kelvin',
# 'Rankine', 'Delisle', 'Newton', 'Réaumur' and 'Rømer'.
[Parameter(Position = 1)]
[ValidateSet('Celsius','Fahrenheit','Kelvin','Rankine','Delisle','Newton','Réaumur','Rømer')]
[string] $From,
# How many decimals you want to include in return values.
[Parameter()]
[ValidateRange(0,15)]
[int] $Decimals = 2
)
switch ($From) {
'Celsius' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round($Value, $Decimals)
Fahrenheit = [math]::Round(($Value * (9/5) + 32), $Decimals)
Kelvin = [math]::Round(($Value + 273.15), $Decimals)
Rankine = [math]::Round((($Value + 273.15) * (9/5)), $Decimals)
Delisle = [math]::Round(((100 - $Value) * (3/2)), $Decimals)
Newton = [math]::Round(($Value * (33/100)), $Decimals)
Réaumur = [math]::Round(($Value * (4/5)), $Decimals)
Rømer = [math]::Round(($Value * (21/40) + 7.5), $Decimals)
});break
}
'Fahrenheit' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value - 32) * (5/9)), $Decimals)
Fahrenheit = [math]::Round($Value, $Decimals)
Kelvin = [math]::Round((($Value + 459.67) * (5/9)), $Decimals)
Rankine = [math]::Round(($Value + 459.67), $Decimals)
Delisle = [math]::Round(((212 - $Value) * (5/6)), $Decimals)
Newton = [math]::Round((($Value - 32) * (11/60)), $Decimals)
Réaumur = [math]::Round((($Value - 32) * (4/9)), $Decimals)
Rømer = [math]::Round((($Value - 32) * (7/24) + 7.5), $Decimals)
});break
}
'Kelvin' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value - 273.15), $Decimals)
Fahrenheit = [math]::Round(($Value * (9/5) - 459.67), $Decimals)
Kelvin = [math]::Round($Value, $Decimals)
Rankine = [math]::Round(($Value * (9/5)), $Decimals)
Delisle = [math]::Round(((373.15 - $Value) * (3/2)), $Decimals)
Newton = [math]::Round((($Value - 273.15) * (33/100)), $Decimals)
Réaumur = [math]::Round((($Value - 273.15) * (4/5)), $Decimals)
Rømer = [math]::Round((($Value - 273.15) * (21/40) + 7.5), $Decimals)
});break
}
'Rankine' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value - 491.67) * (5/9)), $Decimals)
Fahrenheit = [math]::Round(($Value - 459.67), $Decimals)
Kelvin = [math]::Round(($Value * (5/9)), $Decimals)
Rankine = [math]::Round($Value, $Decimals)
Delisle = [math]::Round(((671.67 - $Value) * (5/6)), $Decimals)
Newton = [math]::Round((($Value - 491.67) * (11/60)), $Decimals)
Réaumur = [math]::Round((($Value - 491.67) * (4/9)), $Decimals)
Rømer = [math]::Round((($Value - 491.67) * (7/24) + 7.5), $Decimals)
});break
}
'Delisle' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((100 - $Value * (2/3)), $Decimals)
Fahrenheit = [math]::Round((212 - $Value * (6/5)), $Decimals)
Kelvin = [math]::Round((373.15 - $Value * (2/3)), $Decimals)
Rankine = [math]::Round((671.67 - $Value * (6/5)), $Decimals)
Delisle = [math]::Round($Value, $Decimals)
Newton = [math]::Round((33 - $Value * (11/50)), $Decimals)
Réaumur = [math]::Round((80 - $Value * (8/15)), $Decimals)
Rømer = [math]::Round((60 - $Value * (7/20)), $Decimals)
});break
}
'Newton' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value * (100/33)), $Decimals)
Fahrenheit = [math]::Round(($Value * (60/11) + 32), $Decimals)
Kelvin = [math]::Round(($Value * (100/33) + 273.15), $Decimals)
Rankine = [math]::Round(($Value * (60/11) + 491.67), $Decimals)
Delisle = [math]::Round(((33 - $Value) * (50/11)), $Decimals)
Newton = [math]::Round($Value, $Decimals)
Réaumur = [math]::Round(($Value * (80/33)), $Decimals)
Rømer = [math]::Round(($Value * (35/22) + 7.5), $Decimals)
});break
}
'Réaumur' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value * (5/4)), $Decimals)
Fahrenheit = [math]::Round(($Value * (9/4) + 32), $Decimals)
Kelvin = [math]::Round(($Value * (5/4) + 273.15), $Decimals)
Rankine = [math]::Round(($Value * (9/4) + 491.67), $Decimals)
Delisle = [math]::Round(((80 - $Value) * (15/8)), $Decimals)
Newton = [math]::Round(($Value * (33/80)), $Decimals)
Réaumur = [math]::Round($Value, $Decimals)
Rømer = [math]::Round(($Value * (21/32) + 7.5), $Decimals)
});break
}
'Rømer' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value - 7.5) * (40/21)), $Decimals)
Fahrenheit = [math]::Round((($Value - 7.5) * (24/7) + 32), $Decimals)
Kelvin = [math]::Round((($Value - 7.5) * (40/21) + 273.15), $Decimals)
Rankine = [math]::Round((($Value - 7.5) * (24/7) + 491.67), $Decimals)
Delisle = [math]::Round(((60 - $Value) * (20/7)), $Decimals)
Newton = [math]::Round((($Value - 7.5) * (22/35)), $Decimals)
Réaumur = [math]::Round((($Value - 7.5) * (32/21)), $Decimals)
Rømer = [math]::Round($Value, $Decimals)
});break
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment