public void TestTimeSeriesFloatPerfectTrended()
{
var inputs = new[] {
new InputOutput()
{
X = 5f, time = 0f
},
new InputOutput()
{
X = 7f, time = 1f
},
new InputOutput()
{
X = 9f, time = 2f
},
new InputOutput()
{
X = 11f, time = 3f
},
};
using (var host = EnvHelper.NewTestEnvironment())
{
var data = host.CreateStreamingDataView(inputs);
var args = new DeTrendTransform.Arguments
{
columns = new[] { new Scikit.ML.PipelineHelper.Column1x1()
{
Source = "X", Name = "Y"
} },
timeColumn = "time"
};
var scaled = new DeTrendTransform(host, args, data);
using (var cursor = scaled.GetRowCursor(i => true))
{
var outValues = new List <float>();
int pos = SchemaHelper.GetColumnIndex(cursor.Schema, "Y");
var type = cursor.Schema[pos].Type;
if (type != NumberType.R4)
{
throw new Exception("Unexpected type");
}
var colGetter = cursor.GetGetter <float>(pos);
float got = -1f;
while (cursor.MoveNext())
{
colGetter(ref got);
outValues.Add(got);
}
if (outValues.Count != 4)
{
throw new Exception("expected 4");
}
for (int i = 0; i < outValues.Count; ++i)
{
if (Math.Abs(outValues[i]) > 5e-2)
{
throw new Exception(string.Format("Unexpected value {0}!={1}", outValues[i], 0));
}
}
}
}
}
public void TestTimeSeriesFloatUnPerfectTrended2()
{
var inputs = new[] {
new InputOutput()
{
X = 3740f, time = 1f
},
new InputOutput()
{
X = 2880f, time = 2f
},
new InputOutput()
{
X = 2620f, time = 3f
},
new InputOutput()
{
X = 2860f, time = 4f
},
new InputOutput()
{
X = 2640f, time = 5f
},
new InputOutput()
{
X = 2740f, time = 6f
},
new InputOutput()
{
X = 2940f, time = 7f
},
new InputOutput()
{
X = 4040f, time = 8f
},
new InputOutput()
{
X = 3800f, time = 9f
},
new InputOutput()
{
X = 3640f, time = 10f
},
};
/*using (*/ var host = EnvHelper.NewTestEnvironment();
{
var data = DataViewConstructionUtils.CreateFromEnumerable(host, inputs);
var args = new DeTrendTransform.Arguments
{
columns = new[] { new Scikit.ML.PipelineHelper.Column1x1()
{
Source = "X", Name = "Y"
} },
timeColumn = "time"
};
var scaled = new DeTrendTransform(host, args, data);
using (var cursor = scaled.GetRowCursor(scaled.OutputSchema))
{
var outValues = new List <float>();
int pos = SchemaHelper.GetColumnIndex(cursor.Schema, "Y");
var type = cursor.Schema[pos].Type;
if (type != NumberDataViewType.Single)
{
throw new Exception("Unexpected type");
}
var colGetter = cursor.GetGetter <float>(SchemaHelper._dc(pos, cursor));
float got = -1f;
while (cursor.MoveNext())
{
colGetter(ref got);
outValues.Add(got);
}
if (outValues.Count != inputs.Length)
{
throw new Exception("unexpected size");
}
for (int i = 0; i < outValues.Count; ++i)
{
if (Math.Abs(outValues[i]) > 2000)
{
throw new Exception(string.Format("Unexpected value {0}", outValues[i]));
}
}
}
}
}