public void AddSeriesByDay(string name, RatingRecord[] records, int days)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
var today = DateTime.Today;
var startDay = today.AddDays(-days);
var data = records.Where(item => item.Rating.HasValue && item.Date < today && item.Date >= startDay)
.Select(
item => new DataPoint
{
Date = item.Date,
Value = (float)item.Rating.Value
})
.ToList();
if (data.Count > 0)
{
addedData = true;
var byDate = data.ToLookup(item => item.Date.Date);
for (int i = 0; i < days; i++)
{
var day = today.AddDays(-1 - i);
if (!byDate.Contains(day))
{
data.Add(new DataPoint {
Date = day, Value = 0
});
}
}
dataset.AddSeries(name, data.ToArray());
}
}
