/// <summary>
/// Summarizes an enumerable of double messages into summarized doubles.
/// </summary>
/// <typeparam name="T">The type of messages to summarize.</typeparam>
/// <param name="messages">Enumerable of double messages.</param>
/// <param name="interval">The time interval each summary value should cover.</param>
/// <returns>List of summarized doubles.</returns>
internal static List <IntervalData <T> > Summarizer <T>(IEnumerable <Message <T> > messages, TimeSpan interval)
{
return(messages
.OrderBy(msg => msg.OriginatingTime)
.GroupBy(msg => Summarizer <T, T> .GetIntervalStartTime(msg.OriginatingTime, interval))
.Select(
group =>
{
var firstMessage = group.First();
var lastMessage = group.Last();
return IntervalData.Create(
lastMessage.Data, // Take last value as representative value for plotting
group.Min(m => m.Data), // Minimum value
group.Max(m => m.Data), // Maximum value
firstMessage.OriginatingTime, // First message's OT
lastMessage.OriginatingTime - firstMessage.OriginatingTime); // Interval between first and last messages
}).ToList());
}
/// <summary>
/// Summarizes an enumerable of double messages into summarized doubles.
/// </summary>
/// <typeparam name="T">The type of messages to summarize.</typeparam>
/// <param name="messages">Enumerable of double messages.</param>
/// <param name="interval">The time interval each summary value should cover.</param>
/// <returns>List of summarized doubles.</returns>
internal static List <IntervalData <T> > Summarizer <T>(IEnumerable <Message <T> > messages, TimeSpan interval)
{
return(messages
.OrderBy(msg => msg.OriginatingTime)
.GroupBy(msg => Summarizer <T, T> .GetIntervalStartTime(msg.OriginatingTime, interval))
.Select(
group =>
{
var firstMessage = group.First();
var lastMessage = group.Last();
// Use the last value as representative for summarization, with the first message
// originating time.
return IntervalData.Create(
value: lastMessage.Data,
minimum: group.Min(m => m.Data),
maximum: group.Max(m => m.Data),
originatingTime: firstMessage.OriginatingTime,
interval: lastMessage.OriginatingTime - firstMessage.OriginatingTime);
}).ToList());
}
/// <summary>
/// Summarizes an enumerable of double messages into summarized doubles.
/// </summary>
/// <typeparam name="TKey">The type of the series key.</typeparam>
/// <typeparam name="T">The type of messages to summarize.</typeparam>
/// <param name="messages">Enumerable of double messages.</param>
/// <param name="interval">The time interval each summary value should cover.</param>
/// <returns>List of summarized doubles.</returns>
internal static List <IntervalData <Dictionary <TKey, T> > > SeriesSummarizer <TKey, T>(IEnumerable <Message <Dictionary <TKey, T> > > messages, TimeSpan interval)
{
return(messages
.OrderBy(msg => msg.OriginatingTime)
.GroupBy(msg => Summarizer <T, T> .GetIntervalStartTime(msg.OriginatingTime, interval))
.Select(
group =>
{
var firstMessage = group.First();
var lastMessage = group.Last();
var min = new Dictionary <TKey, T>();
var max = new Dictionary <TKey, T>();
foreach (var message in group)
{
foreach (var kvp in message.Data)
{
// Update min
if (!min.ContainsKey(kvp.Key))
{
min.Add(kvp.Key, kvp.Value);
}
else if (kvp.Value is IComparable <T> comparable)
{
if (comparable.CompareTo(min[kvp.Key]) == -1)
{
min[kvp.Key] = kvp.Value;
}
}
else if (kvp.Value is IComparable untypedComparable)
{
if (untypedComparable.CompareTo(min[kvp.Key]) == -1)
{
min[kvp.Key] = kvp.Value;
}
}
else
{
throw new InvalidOperationException("Cannot summarize over values that are not comparable.");
}
// Update max
if (!max.ContainsKey(kvp.Key))
{
max.Add(kvp.Key, kvp.Value);
}
else if (kvp.Value is IComparable <T> comparable)
{
if (comparable.CompareTo(max[kvp.Key]) == 1)
{
max[kvp.Key] = kvp.Value;
}
}
else if (kvp.Value is IComparable untypedComparable)
{
if (untypedComparable.CompareTo(max[kvp.Key]) == 1)
{
max[kvp.Key] = kvp.Value;
}
}
else
{
throw new InvalidOperationException("Cannot summarize over values that are not comparable.");
}
}
}
// Use the last value as representative for summarization, with the first message
// originating time.
return IntervalData.Create(
value: lastMessage.Data,
minimum: min,
maximum: max,
originatingTime: firstMessage.OriginatingTime,
interval: lastMessage.OriginatingTime - firstMessage.OriginatingTime);
}).ToList());
}
