private static ClassDistributionStatsViewData CreateGradeAvgViewData(IList <StudentAverageGradeInfo> models, IList <GradingScaleRange> gradingScaleRanges)
{
var res = new ClassDistributionStatsViewData
{
ClassAvg = models.Count == 0 ? 0 : models.Average(x => x.AverageGrade),
DistributionStats = new List <DistributionItemViewData>()
};
gradingScaleRanges = gradingScaleRanges.OrderBy(x => x.LowValue).ToList();
foreach (var gradingScaleRange in gradingScaleRanges)
{
var lo = (int)decimal.Round(gradingScaleRange.LowValue);
var hi = (int)decimal.Round(gradingScaleRange.HighValue);
res.DistributionStats.Add(new DistributionItemViewData
{
Count = models.Count(x => x.AverageGrade <= hi && x.AverageGrade >= lo),
StartInterval = lo,
EndInterval = hi,
Summary = $"{lo}-{hi}",
StudentIds = models.Where(x => x.AverageGrade <= hi && x.AverageGrade >= lo)
.Select(x => x.StudentId)
.ToList()
});
}
return(res);
}
private static ClassDistributionStatsViewData CreateInfractionViewData(IList <ShortStudentInfractionsInfo> models)
{
var res = new ClassDistributionStatsViewData
{
DistributionStats = new List <DistributionItemViewData>()
};
models = models.OrderBy(x => x.NumberOfInfractions).ToList();
if (models.Count == 0)
{
return(res);
}
var maxInfractionCount = models.Max(x => x.NumberOfInfractions);
if (maxInfractionCount % 3 != 0)
{
maxInfractionCount += (3 - maxInfractionCount % 3);
}
res.DistributionStats.Add(new DistributionItemViewData
{
Count = models.Count(x => x.NumberOfInfractions == 0),
StartInterval = 0,
EndInterval = 0,
Summary = $"{0}",
StudentIds = models.Where(x => x.NumberOfInfractions == 0).Select(x => x.StudentId).ToList()
});
for (var i = 1; i <= maxInfractionCount; i += 3)
{
res.DistributionStats.Add(new DistributionItemViewData
{
Count = models.Count(x => x.NumberOfInfractions >= i && x.NumberOfInfractions < i + 3),
StartInterval = i,
EndInterval = i + 2,
Summary = $"{i}-{i+2}",
StudentIds = models.Where(x => x.NumberOfInfractions >= i && x.NumberOfInfractions < i + 3)
.Select(x => x.StudentId)
.ToList()
});
}
res.ClassAvg = res.DistributionStats.Average(x => x.Count);
return(res);
}
private static ClassDistributionStatsViewData CreateAbsencesViewData(IList <ShortStudentAbsenceInfo> models)
{
var res = new ClassDistributionStatsViewData
{
ClassAvg = 0,
DistributionStats = new List <DistributionItemViewData>()
};
var absencePersents = models.Where(x => x.NumberOfDaysEnrolled != 0)
.Select(x => new { Persent = (int)decimal.Round(x.NumberOfAbsences / x.NumberOfDaysEnrolled * 100), x.StudentId })
.OrderBy(x => x.Persent).ToList();
if (absencePersents.Count == 0)
{
return(res);
}
var maxPersent = absencePersents.Max(x => x.Persent);
res.DistributionStats = new List <DistributionItemViewData>();
for (var currentPersent = 0; currentPersent <= maxPersent; ++currentPersent)
{
res.DistributionStats.Add(new DistributionItemViewData
{
StartInterval = currentPersent,
EndInterval = currentPersent,
Count = absencePersents.Count(x => x.Persent == currentPersent),
Summary = $"{currentPersent}%",
StudentIds = absencePersents.Where(x => x.Persent == currentPersent)
.Select(x => x.StudentId)
.ToList()
});
}
res.ClassAvg = res.DistributionStats.Average(x => x.Count);
return(res);
}
