public void Histogram_BuildsFromValueList()
{
var values = new List<double>() { 1d, 2d, 3d, 4d, 5d };
var rule = new LinearBucketingRule(1d, 0d, 5d);
var h = new Histogram(rule);
h.Build(values);
Assert.AreEqual(0, h.Buckets[0]);
Assert.AreEqual(1, h.Buckets[1]);
}
private static void Display(LinearBucketingRule rule, Histogram histogram, bool cumulative)
{
var total = 0;
Console.WriteLine("Low (< " + rule.Min + ") \t" + histogram.Low);
for(int i = 0; i < histogram.Buckets.Length; i++)
{
total += histogram.Buckets[i];
if (cumulative)
{
Console.WriteLine(rule.DetermineValue(i) + "\t" + total);
}
else
{
Console.WriteLine(rule.DetermineValue(i) + "\t" + histogram.Buckets[i]);
}
}
Console.WriteLine("High (>= " + rule.Max + ") \t" + histogram.High);
total += histogram.Low + histogram.High;
Console.WriteLine("Total\t" + total);
}
public void Histogram_BucketsLowOnBuild()
{
var values = new List<double>() { 1d, 2d, 3d, 4d, 5d };
var rule = new LinearBucketingRule(1d, 2d, 6d);
var h = new Histogram(rule);
h.Build(values);
Assert.AreEqual(1, h.Low);
}
public void SetUp()
{
var linearBucketingRule = new LinearBucketingRule(10d, 0d, Double.MaxValue);
H = new Histogram(linearBucketingRule);
}
public void Histogram_BuildsWithHighAndLowBuckets()
{
var values = new List<double>() { 1d, 3.11d, 4.5d, 5.5d, 5.5d, 6d, 6d, 6d };
var rule = new LinearBucketingRule(1d, 2d, 6d);
var h = new Histogram(rule);
h.Build(values);
Assert.AreEqual(1, h.Low);
Assert.AreEqual(3, h.High);
Assert.AreEqual(1, h.Buckets[1]);
Assert.AreEqual(2, h.Buckets[3]);
}
static void Main(string[] args)
{
if (args.Length == 0)
{
Console.WriteLine("Usage: histo -file=<filename> [-w=<bucket width>] [-l=<low value> -h=<high value>]");
return;
}
var fileName = string.Empty;
var bucketWidth = 10d;
var bucketWidthSet = false;
var low = 0d;
var lowSet = false;
var high = 100d;
var highSet = false;
var cumulative = false;
OptionSet p = new OptionSet()
.Add("file=", f => fileName = f)
.Add("bucketWidth=|w=", w =>
{
bucketWidth = Convert.ToDouble(w);
bucketWidthSet = true;
})
.Add("low=|l=", l =>
{
low = Convert.ToDouble(l);
lowSet = true;
})
.Add("high=|h=", h =>
{
high = Convert.ToDouble(h);
highSet = true;
})
.Add("cumulative|c", c => { cumulative = true; });
var unparsed = p.Parse(args);
Guard.IsLessThan(high, low, "high", "low", "Your low limit must be less than your high limit.");
if ((lowSet && !highSet) || (highSet && !lowSet))
{
throw new ArgumentException("You must set both of low and high if you set one.");
}
var loader = new FileDataLoader(fileName);
var data = loader.Load();
var rule = new LinearBucketingRule(data);
if(! lowSet && ! highSet)
{
rule = new LinearBucketingRule(bucketWidth, data);
}
else if(lowSet && highSet)
{
rule = new LinearBucketingRule(bucketWidth, low, high);
}
var histo = new Histogram(rule);
histo.Build(data);
Display(rule, histo, cumulative);
}
