#15 Patch for when all data values are the same (1.27d)

[Nabeel Shahzad]

Line 462, after:

if ( $this->VMin == 0 && $this->VMax == 0 )
{ $this->VMin = 0; $this->VMax = 2; $Scale = 1; $Divisions = 2;}

Add:

elseif( $this->VMin == $this->VMax)
{
$this->VMin -= 2;
$this->VMax += 2;
$Scale = 1;
$Divisions = 2;
}

Prevents timeout for when all the values are the same, not just equal to zero