ConvertTo-GoogleChartNum (modification of post by view diff)
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A rounding encoder for Google Charts data: converts numbers to their relative values within Google’s 0..4095 range, and encodes them in their slightly strange 2-digit base 64 encoding.
- ## Google Chart API extended value encoding function
- #########################################################################
- #function ConvertTo-GoogleChartNum{
- BEGIN {
- ## Google's odydecody is a 64 character array
- $ody = "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","0","1","2","3","4","5","6","7","8","9","-","."
- ## The actual filter function
- filter encode {
- # we have a hard-coded "overflow" value
- if($_ -ge ($ody.Count * $ody.Count) ) { return "__" }
- $y = -1 # $y is a ref variable, so it has to be defined
- $x = [Math]::DivRem( $_, $ody.Count, [ref]$y )
- return "$($ody[$x])$($ody[$y])"
- }
- ## Handle numbers as parameters
- [int[]]$nums = $args | % { [int]$_ }
- }
- ## Or handle numbers from the pipeline. We don't care :-)
- PROCESS {
- if($_ -ne $null) { $nums += $_ }
- }
- #}
- END {
- $diff = ($nums | sort | select -last 1) / ($ody.Count * $ody.Count -1)
- $nums | %{$_/$diff} | encode
- }
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