makeChart $find @('3Read latency, microseconds','2Write Latency, microseconds') 'IO latency' 'Time' 'Times in microseconds' 'latency'

# Xgraph colors
# 2 = red, 3 = blue, 4 = green, 5 = violet, 6 = orange, 7 = yellow, 8 = pink, 9 = cyan
function makeChart($ds, $cols, $title, $titleX, $titleY, $pngname)
{
  Out-File -FilePath $workfile -Force -Encoding ascii
  "Title = $title" | Add-Content $workfile
  "title_x = $titleX" | Add-Content $workfile
  "title_y = $titleY" | Add-Content $workfile
  $maxval = 0
  foreach ($c in $cols)
    {
    $colname = $c.Substring(1)
    $colch = $c[0]
    "color = $colch" | Add-Content $workfile
    $secf = -1
    foreach ($r in $find) {
      $val = $r[$colname]
      if ($val -gt $maxval) { $maxval = $val }
      if ($secf -lt 0) { $secf = $r.sec }
      $secl = $r.sec
      "$secl $val" | Add-Content $workfile
    }
  "NEXT" | Add-Content $workfile
  }
  $maxval = $maxval * 1.03

&D:\Apps\Xgraph\bin\xgraph.exe $workfile -pdf -hms -x_range $secf $secl -y_range 0 $maxval -out_file $pdf

&D:\Apps\poppler\bin\pdftoppm -png $pdf $pngname