public RawValueInfo(double data, double value, ValueMemberDefinition definition)
{
if (definition == null)
throw new Exception("definition can't be null");
Data = data;
Value = value;
ValueMember = definition;
}
double? GetValueY(ValueMemberDefinition vm, double x)
{
if (rawData == null)
return null;
var leftVal = rawData.Where(v => v.ValueMember == vm & v.Data >= x).OrderBy(v => v.Data).FirstOrDefault();
var rightVal = rawData.Where(v => v.ValueMember == vm & v.Data <= x).OrderByDescending(v => v.Data).FirstOrDefault();
if (leftVal == null | rightVal == null)
return null;
return (leftVal.Value - rightVal.Value) / (leftVal.Data - rightVal.Data) * (x - leftVal.Data) + leftVal.Value;
}