public static IEnumerable <object[]> TestSelectArgs()
{
object[] core(NdArrayI source, Expression <Func <int, int> > selector)
=> new object[]
{
source, selector
};
yield return(core(
NdArray.Create(new[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
}), x => x));
yield return(core(
NdArray.Create(new[, , ]
{
{ { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 } },
{ { 13, 14, 15, 16 }, { 17, 18, 19, 20 }, { 21, 22, 23, 24 } },
}), x => x + 1));
yield return(core(RandomNdArray.RandInt32(new[] { 2, 3, 4, 5, 6, 7, 8, 9 }), x => x));
yield return(core(RandomNdArray.RandInt32(new[] { 2, 3, 4, 5, 6, 7, 8, 9 }), x => x + 1));
yield return(core(RandomNdArray.RandInt32(new[] { 2, 3, 4, 5, 6, 7, 8, 9 }), x => 2 * x));
yield return(core(RandomNdArray.RandInt32(new[] { 2, 3, 4, 5, 6, 7, 8, 9 }), x => x / 2));
}
public static IEnumerable <object[]> TestSelectArgs()
{
var source = NdArray.Create(new[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
});
object[] core(Func <int, int> selector, NdArrayI expected)
=> new object[]
{
source, selector, expected
};
yield return(core(x => x,
NdArray.Create(new [, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
})));
yield return(core(x => x + 1,
NdArray.Create(new[, , ]
{
{ { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 } },
{ { 13, 14, 15, 16 }, { 17, 18, 19, 20 }, { 21, 22, 23, 24 } },
})));
}
private static NdArray <int> CreateTestSample()
=> NdArray.Create(new[, , ]
{
{ { 0, 1, }, { 2, 3, }, { 4, 5, }, },
{ { 6, 7, }, { 8, 9, }, { 10, 11, }, },
{ { 12, 13, }, { 14, 15, }, { 16, 17, }, },
{ { 18, 19, }, { 20, 21, }, { 22, 23, }, },
});
public static IEnumerable <object?[]> TestData()
{
var strategies = new IIterationStrategy?[]
{
null,
IterationStrategy.Default,
ParallelIterationStrategy.Instance,
};
var arrays = new NdArray <double>[]
{
NdArray.Create(new double[, ] {
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
}),
NdArray.Create(new double[, ] {
{ 1, 2, 3, 4 },
{ 5, 6, 7, 8 },
{ 9, 10, 11, 12 },
{ 13, 14, 15, 16 }
}),
NdArray.Create(new double[, ] {
{ 10, 4, 2, 10, 5, 4, 4, 1, 1, 2 },
{ 5, 1, 1, 7, 7, 2, 5, 5, 6, 4 },
{ 2, 3, 6, 5, 4, 1, 9, 3, 6, 1 },
{ 9, 3, 3, 8, 3, 5, 6, 6, 6, 5 },
{ 0, 1, 6, 3, 0, 5, 8, 2, 8, 8 },
{ 5, 4, 4, 7, 2, 9, 6, 1, 3, 5 },
{ 8, 2, 6, 4, 1, 5, 8, 3, 3, 3 },
{ 1, 3, 6, 7, 4, 10, 3, 1, 0, 4 },
{ 10, 1, 2, 2, 3, 4, 6, 10, 8, 6 },
{ 3, 8, 9, 4, 1, 3, 6, 10, 4, 1 }
}),
NdArray.Create(new double[, ] {
{ 6, 4, 5, 3, 10, 8, 2, 2, 7, 9 },
{ 9, 0, 2, 5, 1, 10, 4, 4, 2, 4 },
{ 0, 1, 3, 6, 1, 2, 8, 4, 9, 1 },
{ 5, 1, 1, 7, 1, 4, 10, 4, 7, 6 },
{ 8, 5, 5, 4, 1, 1, 7, 10, 1, 7 },
{ 3, 3, 6, 2, 3, 9, 6, 6, 8, 7 },
{ 6, 1, 2, 8, 7, 5, 8, 7, 4, 5 },
{ 1, 2, 2, 5, 0, 6, 2, 6, 9, 7 },
{ 3, 7, 1, 8, 9, 5, 4, 1, 8, 1 },
{ 10, 4, 8, 2, 3, 1, 1, 3, 1, 7 }
}),
};
foreach (var strategy in strategies)
{
foreach (var array in arrays)
{
yield return new object?[] { strategy, array }
}
}
;
}
/// <summary>
/// Evaluates cross operation of 3-dim vector lazily.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns></returns>
public static NdArray <T> Cross <T>(this INdArray <T> x, INdArray <T> y)
{
Guard.AssertShapeMatch(new[] { 3 }, x.Shape, nameof(x) + "." + nameof(INdArray <T> .Shape));
Guard.AssertShapeMatch(new[] { 3 }, y.Shape, nameof(y) + "." + nameof(INdArray <T> .Shape));
var p = Op.Subtract(Op.Multiply(x[1], y[2]), Op.Multiply(x[2], y[1]));
var q = Op.Subtract(Op.Multiply(x[2], y[0]), Op.Multiply(x[0], y[2]));
var r = Op.Subtract(Op.Multiply(x[0], y[1]), Op.Multiply(x[1], y[0]));
return(NdArray.Create(new[] { p, q, r }));
}
/// <summary>
/// Gets a <see cref="NdArray{T}"/> whose values are <c>0 - 1</c> random <see cref="double"/> value.
/// </summary>
/// <param name="shape"> [Non-Null] </param>
/// <param name="gen"></param>
/// <returns></returns>
public static NdArray <double> Rand64(int[] shape, RandomGenerator?gen = default)
{
Guard.AssertArgumentNotNull(shape, nameof(shape));
if (gen is null)
{
gen = RandomGenerator.Default;
}
return(NdArray
.Create(gen.NextFloat64(shape.Aggregate((x, y) => x * y)), shape));
}
private static IEnumerable <object[]> TestCaseForXDim()
{
object[] core(int[] axesMap, NdArray <int> from, NdArray <int> to)
=> new object[]
{
axesMap, from, to
};
yield return(core(
new[] { 0 },
NdArray.Create(new[] { 0 }),
NdArray.Create(new[] { 0 })));
yield return(core(
new[] { 2, 1, 0 },
NdArray.Create(new[, , ] {
{
{ 000, 001, 002, 003 },
{ 010, 011, 012, 013 },
{ 020, 021, 022, 023 },
},
{
{ 100, 101, 102, 103 },
{ 110, 111, 112, 113 },
{ 120, 121, 122, 123 },
},
}),
NdArray.Create(new[, , ] {
{
{ 000, 100 },
{ 010, 110 },
{ 020, 120 },
},
{
{ 001, 101 },
{ 011, 111 },
{ 021, 121 },
},
{
{ 002, 102 },
{ 012, 112 },
{ 022, 122 },
},
{
{ 003, 103 },
{ 013, 113 },
{ 023, 123 },
},
})));
}
private static IEnumerable <object[]> TestCaseFor2Dim()
{
object[] core(NdArray <int> from, NdArray <int> to)
=> new[] { from, to };
yield return(core(
NdArray.Create(new[, ] {
{ 0 }
}),
NdArray.Create(new[, ] {
{ 0 }
})));
yield return(core(
NdArray.Create(new[, ] {
{ 0, 1 },
{ 2, 3 },
}),
NdArray.Create(new[, ] {
{ 0, 2 },
{ 1, 3 },
})));
yield return(core(
NdArray.Create(new[, ] {
{ 0, 1, 2 },
{ 3, 4, 5 },
}),
NdArray.Create(new[, ] {
{ 0, 3 },
{ 1, 4 },
{ 2, 5 },
})));
yield return(core(
NdArray.Create(new[, ] {
{ 0, 1, 2 },
{ 3, 4, 5 },
{ 6, 7, 8 },
}),
NdArray.Create(new[, ] {
{ 0, 3, 6 },
{ 1, 4, 7 },
{ 2, 5, 8 },
})));
yield break;
}
public void Execute()
{
var source = NdArray.Create(new double[, , ]
{
{ { 0.0, 1.0, 2.0, 3.0 }, { 4.0, 5.0, 6.0, 7.0 }, { 8.0, 9.0, 10.0, 11.0 } },
{
{ 12.0, 13.0, 14.0, 15.0 }, { 16.0, 17.0, 18.0, 19.0 },
{ 20.0, 21.0, 22.0, 23.0 }
}
});
WriteLine(source[0, 0, 0]); // 0.0
WriteLine(source[0, 0, 3]); // 3.0
WriteLine(source[0, 2, 0]); // 8.0
WriteLine(source[1, 0, 0]); // 12.0
WriteLine(source[1, 2, 3]); // 23.0
WriteLine(source.GetItem(0)); // 0.0
WriteLine(source.GetItem(10)); // 10.0
WriteLine(source.GetItem(20)); // 20.0
// `NdArray<T>` is available in foreach statement.
// But it is not `IEnumerable < T >` to prevent unintended use of LINQ to Objects.
// If you want to handle `NdArray<T>` as `IEnumerable<T>` explicitly,
// please use `AsEnumerable()`.
foreach (var x in source)
{
WriteLine(x);
}
WriteLine(source is IEnumerable <double>); // false
WriteLine(source.AsEnumerable() is IEnumerable <double>); // true
// You can also use `AsEnumerable(int axis)` to iterate along specified axis.
foreach (var x in source.AsEnumerable(1))
{
WriteLine(x);
}
/* NdArray({{ 0, 1, 2, 3},
* {12, 13, 14, 15}})
* NdArray({{ 4, 5, 6, 7},
* {16, 17, 18, 19}})
* NdArray({{ 8, 9, 10, 11},
* {20, 21, 22, 23}})
*/
WriteLine(source.AsEnumerable(1) is IEnumerable <NdArray <double> >); // true
}
public static IEnumerable <object[]> TestData()
{
object[] core(NdArray <double> a, double det)
=> new object[]
{
a, det
};
yield return(core(NdArray.Create(new double[, ] {
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
}), 0));
yield return(core(NdArray.Create(new double[, ] {
{ 1, 2, 3, 4 },
{ 5, 6, 7, 8 },
{ 9, 10, 11, 12 },
{ 13, 14, 15, 16 }
}), 0));
yield return(core(NdArray.Create(new double[, ] {
{ 10, 4, 2, 10, 5, 4, 4, 1, 1, 2 },
{ 5, 1, 1, 7, 7, 2, 5, 5, 6, 4 },
{ 2, 3, 6, 5, 4, 1, 9, 3, 6, 1 },
{ 9, 3, 3, 8, 3, 5, 6, 6, 6, 5 },
{ 0, 1, 6, 3, 0, 5, 8, 2, 8, 8 },
{ 5, 4, 4, 7, 2, 9, 6, 1, 3, 5 },
{ 8, 2, 6, 4, 1, 5, 8, 3, 3, 3 },
{ 1, 3, 6, 7, 4, 10, 3, 1, 0, 4 },
{ 10, 1, 2, 2, 3, 4, 6, 10, 8, 6 },
{ 3, 8, 9, 4, 1, 3, 6, 10, 4, 1 }
}), 18492754));
yield return(core(NdArray.Create(new double[, ] {
{ 6, 4, 5, 3, 10, 8, 2, 2, 7, 9 },
{ 9, 0, 2, 5, 1, 10, 4, 4, 2, 4 },
{ 0, 1, 3, 6, 1, 2, 8, 4, 9, 1 },
{ 5, 1, 1, 7, 1, 4, 10, 4, 7, 6 },
{ 8, 5, 5, 4, 1, 1, 7, 10, 1, 7 },
{ 3, 3, 6, 2, 3, 9, 6, 6, 8, 7 },
{ 6, 1, 2, 8, 7, 5, 8, 7, 4, 5 },
{ 1, 2, 2, 5, 0, 6, 2, 6, 9, 7 },
{ 3, 7, 1, 8, 9, 5, 4, 1, 8, 1 },
{ 10, 4, 8, 2, 3, 1, 1, 3, 1, 7 }
}), -167329180));
}
public static IEnumerable <object[]> TestData()
{
object[] core(NdArray <double> a, NdArray <double> b, NdArray <double> x)
=> new object[]
{
a, b, x
};
yield return(core(
NdArray.Create(new double[, ] {
{ 1, 1, 1, 1 },
{ 1, 1, 1, -1 },
{ 1, 1, -1, 1 },
{ 1, -1, 1, 1 },
}),
NdArray.Create(new double[] { 0, 4, -4, 2 }),
NdArray.Create(new double[] { 1, -1, 2, -2 })
));
yield return(core(
NdArray.Create(new double[, ] {
{ 1.0, 1.0, 1.0, 1.0 },
{ 1.0, 1.0, 1.0, -1.0 },
{ 1.0, 1.0, -1.0, 1.0 },
{ 1.0, -1.0, 1.0, 1.0 },
}),
NdArray.Create(new double[, ] {
{ 0.0, 1.0 },
{ 4.0, 2.0 },
{ -4.0, 3.0 },
{ 2.0, 4.0 },
}),
// NdArray.Create(new double[,] { { 0.0, 4.0, -4.0, 2.0 },
// { 1.0, 2.0, 3.0, 4.0 } }),
NdArray.Create(new double[, ] {
{ 1.0, 4.0 },
{ -1.0, -1.5 },
{ 2.0, -1.0 },
{ -2.0, -0.5 },
})
// NdArray.Create(new double[,] { { 1.0, -1.0, 2.0, -2.0 },
// { 4.0, -1.5, -1.0, -0.5 }, })
));
yield break;
}
public void Execute()
{
// Creates with 1-D array and shape definition.
var ndarray1 = NdArray.Create(new double[24], new int[] { 2, 3, 4 });
WriteLine(ndarray1);
// Creates with multi-dimension array.
var ndarray2 = NdArray.Create(new double[2, 3, 4]);
WriteLine(ndarray2);
// Basic NdArray is immutable.
// If you need mutable NdArray, use `CreateMutable` instead of `Create`.
var ndarray3 = NdArray.CreateMutable(new double[2, 3, 4]);
WriteLine(ndarray3);
// You can convert mutable <-> immutable NdArray with `ToImmutable`/`ToMutable`.
// These methods create copy.
var ndarray4 = ndarray3.ToImmutable();
WriteLine(ndarray4);
var ndarray5 = ndarray1.ToMutable();
WriteLine(ndarray5);
// You can also convert mutable -> immutable with `MoveTommutable`.
// This method moves internal buffer, but does not create copy.
// Please note this method destroys the source mutable NdArray.
var ndarray6 = ndarray3.MoveToImmutable();
WriteLine(ndarray6);
// If generic data type T has `0`/`1` value, you can use `Zeros`/`Ones`.
var ndarray7 = NdArray.Zeros <double>(new int[] { 2, 3, 4 });
WriteLine(ndarray7);
var ndarray8 = NdArray.Ones <double>(new int[] { 2, 3, 4 });
WriteLine(ndarray8);
}
public static IEnumerable <object[]> TestWhereArgs()
{
var source = NdArray.Create(new[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
});
bool predicate(NdArrayI x) => x[0, 0] == 0;
object[] core(
int axis,
NdArrayI expected)
=> new object[]
{
source, axis, (Func <NdArrayI, bool>)predicate, expected
};
yield return(core(0,
NdArray.Create(new [, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
})));
yield return(core(1,
NdArray.Create(new[, , ]
{
{ { 0, 1, 2, 3 } },
{ { 12, 13, 14, 15 } },
})));
yield return(core(2,
NdArray.Create(new[, , ]
{
{ { 0 }, { 4 }, { 8 } },
{ { 12 }, { 16 }, { 20 } },
})));
}
public void Create()
{
void doNothing <T>(T value)
{
}
Assert.Equal(new IndexArray(0),
NdArray.Create(new int[0]).Shape);
Assert.Equal(new IndexArray(0, 0),
NdArray.Create(new int[0, 0]).Shape);
Assert.Equal(new IndexArray(0, 0, 0),
NdArray.Create(new int[0, 0, 0]).Shape);
Assert.Equal(new IndexArray(0, 0, 0, 0),
NdArray.Create(new int[0, 0, 0, 0]).Shape);
Assert.Equal(new IndexArray(0, 0, 0, 0, 0),
NdArray.Create(new int[0, 0, 0, 0, 0]).Shape);
Assert.Equal(new IndexArray(0, 0, 0, 0, 0, 0),
NdArray.Create(new int[0, 0, 0, 0, 0, 0]).Shape);
{
var ndarray = NdArray.Create(new int[] { 0, 1, 2, 3 });
Assert.Equal(new IndexArray(4), ndarray.Shape);
Assert.Equal(0, ndarray[0]);
Assert.Equal(1, ndarray[1]);
Assert.Equal(2, ndarray[2]);
Assert.Equal(3, ndarray[3]);
Assert.Equal(0, ndarray[-4]);
Assert.Equal(1, ndarray[-3]);
Assert.Equal(2, ndarray[-2]);
Assert.Equal(3, ndarray[-1]);
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[4]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 0]));
}
{
var ndarray = NdArray.Create(new int[, ] {
{ 0, 1, 2, 3 }, { 4, 5, 6, 7 }
});
Assert.Equal(new IndexArray(2, 4), ndarray.Shape);
Assert.Equal(0, ndarray[0, 0]);
Assert.Equal(1, ndarray[0, 1]);
Assert.Equal(2, ndarray[0, 2]);
Assert.Equal(3, ndarray[0, 3]);
Assert.Equal(4, ndarray[1, 0]);
Assert.Equal(5, ndarray[1, 1]);
Assert.Equal(6, ndarray[1, 2]);
Assert.Equal(7, ndarray[1, 3]);
Assert.Equal(0, ndarray[0, -4]);
Assert.Equal(1, ndarray[0, -3]);
Assert.Equal(2, ndarray[0, -2]);
Assert.Equal(3, ndarray[0, -1]);
Assert.Equal(4, ndarray[1, -4]);
Assert.Equal(5, ndarray[1, -3]);
Assert.Equal(6, ndarray[1, -2]);
Assert.Equal(7, ndarray[1, -1]);
Assert.Equal(0, ndarray[-2, 0]);
Assert.Equal(1, ndarray[-2, 1]);
Assert.Equal(2, ndarray[-2, 2]);
Assert.Equal(3, ndarray[-2, 3]);
Assert.Equal(4, ndarray[-1, 0]);
Assert.Equal(5, ndarray[-1, 1]);
Assert.Equal(6, ndarray[-1, 2]);
Assert.Equal(7, ndarray[-1, 3]);
Assert.Equal(0, ndarray[-2, -4]);
Assert.Equal(1, ndarray[-2, -3]);
Assert.Equal(2, ndarray[-2, -2]);
Assert.Equal(3, ndarray[-2, -1]);
Assert.Equal(4, ndarray[-1, -4]);
Assert.Equal(5, ndarray[-1, -3]);
Assert.Equal(6, ndarray[-1, -2]);
Assert.Equal(7, ndarray[-1, -1]);
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[2, 0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 4]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 0, 0]));
}
{
var ndarray = NdArray.Create(new int[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } }
});
Assert.Equal(new IndexArray(2, 3, 4), ndarray.Shape);
Assert.Equal(0, ndarray[0, 0, 0]);
Assert.Equal(1, ndarray[0, 0, 1]);
Assert.Equal(2, ndarray[0, 0, 2]);
Assert.Equal(3, ndarray[0, 0, 3]);
Assert.Equal(4, ndarray[0, 1, 0]);
Assert.Equal(5, ndarray[0, 1, 1]);
Assert.Equal(6, ndarray[0, 1, 2]);
Assert.Equal(7, ndarray[0, 1, 3]);
Assert.Equal(8, ndarray[0, 2, 0]);
Assert.Equal(9, ndarray[0, 2, 1]);
Assert.Equal(10, ndarray[0, 2, 2]);
Assert.Equal(11, ndarray[0, 2, 3]);
Assert.Equal(12, ndarray[1, 0, 0]);
Assert.Equal(13, ndarray[1, 0, 1]);
Assert.Equal(14, ndarray[1, 0, 2]);
Assert.Equal(15, ndarray[1, 0, 3]);
Assert.Equal(16, ndarray[1, 1, 0]);
Assert.Equal(17, ndarray[1, 1, 1]);
Assert.Equal(18, ndarray[1, 1, 2]);
Assert.Equal(19, ndarray[1, 1, 3]);
Assert.Equal(20, ndarray[1, 2, 0]);
Assert.Equal(21, ndarray[1, 2, 1]);
Assert.Equal(22, ndarray[1, 2, 2]);
Assert.Equal(23, ndarray[1, 2, 3]);
Assert.Equal(0, ndarray[-2, -3, -4]);
Assert.Equal(1, ndarray[-2, -3, -3]);
Assert.Equal(2, ndarray[-2, -3, -2]);
Assert.Equal(3, ndarray[-2, -3, -1]);
Assert.Equal(4, ndarray[-2, -2, -4]);
Assert.Equal(5, ndarray[-2, -2, -3]);
Assert.Equal(6, ndarray[-2, -2, -2]);
Assert.Equal(7, ndarray[-2, -2, -1]);
Assert.Equal(8, ndarray[-2, -1, -4]);
Assert.Equal(9, ndarray[-2, -1, -3]);
Assert.Equal(10, ndarray[-2, -1, -2]);
Assert.Equal(11, ndarray[-2, -1, -1]);
Assert.Equal(12, ndarray[-1, -3, -4]);
Assert.Equal(13, ndarray[-1, -3, -3]);
Assert.Equal(14, ndarray[-1, -3, -2]);
Assert.Equal(15, ndarray[-1, -3, -1]);
Assert.Equal(16, ndarray[-1, -2, -4]);
Assert.Equal(17, ndarray[-1, -2, -3]);
Assert.Equal(18, ndarray[-1, -2, -2]);
Assert.Equal(19, ndarray[-1, -2, -1]);
Assert.Equal(20, ndarray[-1, -1, -4]);
Assert.Equal(21, ndarray[-1, -1, -3]);
Assert.Equal(22, ndarray[-1, -1, -2]);
Assert.Equal(23, ndarray[-1, -1, -1]);
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[2, 0, 0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 3, 0]));
Assert.Throws <ArgumentOutOfRangeException>(() => doNothing(ndarray[0, 0, 4]));
Assert.Throws <ArgumentOutOfRangeException>(() =>
doNothing(ndarray[0, 0, 0, 0]));
}
}
public static IEnumerable <object[]> TestSelectByAxesArgs()
{
var source = NdArray.Create(new[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
});
object[] core(int[] projectionAxes, Func <NdArrayI, int> selector, NdArrayI expected)
=> new object[]
{
source, projectionAxes, selector, expected
};
yield return(core(new[] { 0 }, x => x[0],
NdArray.Create(new[, ]
{
{ 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 },
})));
yield return(core(new[] { 1 }, x => x[0],
NdArray.Create(new[, ]
{
{ 0, 1, 2, 3 },
{ 12, 13, 14, 15 },
})));
yield return(core(new[] { 2 }, x => x[0],
NdArray.Create(new[, ]
{
{ 0, 4, 8 },
{ 12, 16, 20 },
})));
yield return(core(new[] { 0, 1 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 1, 2, 3
})));
yield return(core(new[] { 0, 1 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 1, 2, 3
})));
yield return(core(new[] { 1, 2 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 12
})));
yield return(core(new[] { 2, 1 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 12
})));
yield return(core(new[] { 0, 2 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 4, 8
})));
yield return(core(new[] { 2, 0 }, x => x[0, 0],
NdArray.Create(new[]
{
0, 4, 8
})));
}
public void Zip()
{
var A = NdArray.Create(new double[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 } },
{ { 8, 9, 10, 11 }, { 12, 13, 14, 15 } }
});
var B = NdArray.Create(new double[, , ]
{
{ { 16, 17, 18, 19 }, { 20, 21, 22, 23 } },
{ { 24, 25, 26, 27 }, { 28, 29, 30, 31 } }
});
var addAns = NdArray.Create(new double[, , ]
{
{
{ 0 + 16, 1 + 17, 2 + 18, 3 + 19 }, { 4 + 20, 5 + 21, 6 + 22, 7 + 23 }
},
{
{ 8 + 24, 9 + 25, 10 + 26, 11 + 27 },
{ 12 + 28, 13 + 29, 14 + 30, 15 + 31 }
}
});
var subAns = NdArray.Create(new double[, , ]
{
{
{ 0 - 16, 1 - 17, 2 - 18, 3 - 19 }, { 4 - 20, 5 - 21, 6 - 22, 7 - 23 }
},
{
{ 8 - 24, 9 - 25, 10 - 26, 11 - 27 },
{ 12 - 28, 13 - 29, 14 - 30, 15 - 31 }
}
});
var mulAns = NdArray.Create(new double[, , ]
{
{
{ 0 * 16, 1 * 17, 2 * 18, 3 * 19 }, { 4 * 20, 5 * 21, 6 * 22, 7 * 23 }
},
{
{ 8 * 24, 9 * 25, 10 * 26, 11 * 27 },
{ 12 * 28, 13 * 29, 14 * 30, 15 * 31 }
}
});
var divAns = NdArray.Create(new double[, , ]
{
{
{ 0.0 / 16, 1.0 / 17, 2.0 / 18, 3.0 / 19 },
{ 4.0 / 20, 5.0 / 21, 6.0 / 22, 7.0 / 23 }
},
{
{ 8.0 / 24, 9.0 / 25, 10.0 / 26, 11.0 / 27 },
{ 12.0 / 28, 13.0 / 29, 14.0 / 30, 15.0 / 31 }
}
});
Assert.Equal(addAns, A.Zip(B, (a, b) => a + b));
Assert.Equal(subAns, A.Zip(B, (a, b) => a - b));
Assert.Equal(mulAns, A.Zip(B, (a, b) => a * b));
Assert.Equal(divAns, A.Zip(B, (a, b) => a / b));
Assert.Equal(addAns, (A, B).Zip((a, b) => a + b));
Assert.Equal(subAns, (A, B).Zip((a, b) => a - b));
Assert.Equal(mulAns, (A, B).Zip((a, b) => a * b));
Assert.Equal(divAns, (A, B).Zip((a, b) => a / b));
}
public static IEnumerable <object[]> TestData()
{
object[] core(NdArray <double> a, NdArray <double> inv)
=> new object[]
{
a, inv
};
yield return(core(
NdArray.Create(new[, ] {
{ 1.0, 1.0, 1.0 },
{ 2.0, 1.0, 1.0 },
{ 2.0, 2.0, 1.0 },
}),
NdArray.Create(new[, ] {
{ -1.0, 1.0, 0.0 },
{ 0.0, -1.0, 1.0 },
{ 2.0, 0.0, -1.0 },
})
));
yield return(core(
NdArray.Create(new[, ] {
{ 1.0, 2.0, 3.0, 4.0 },
{ 2.0, 2.0, 3.0, 4.0 },
{ 3.0, 3.0, 3.0, 4.0 },
{ 4.0, 4.0, 4.0, 4.0 }
}),
NdArray.Create(new[, ] {
{ -1.0, 1.0, 0.0, 0.0 },
{ 1.0, -2.0, 1.0, 0.0 },
{ 0.0, 1.0, -2.0, 1.0 },
{ 0.0, 0.0, 1.0, -0.75 }
})
));
yield return(core(
NdArray.Create(new[, ] {
{ 1.0, 2.0, 3.0, 4.0, 5.0 },
{ 2.0, 2.0, 3.0, 4.0, 5.0 },
{ 3.0, 3.0, 3.0, 4.0, 5.0 },
{ 4.0, 4.0, 4.0, 4.0, 5.0 },
{ 5.0, 5.0, 5.0, 5.0, 5.0 }
}),
NdArray.Create(new[, ] {
{ -1.0, 1.0, 0.0, 0.0, 0.0 },
{ 1.0, -2.0, 1.0, 0.0, 0.0 },
{ 0.0, 1.0, -2.0, 1.0, 0.0 },
{ 0.0, 0.0, 1.0, -2.0, 1.0 },
{ 0.0, 0.0, 0.0, 1.0, -0.8 }
})
));
yield return(core(
NdArray.Create(new[, ] {
{ 5.0, 5.0, 5.0, 5.0, 5.0 },
{ 5.0, 4.0, 4.0, 4.0, 4.0 },
{ 5.0, 4.0, 3.0, 3.0, 3.0 },
{ 5.0, 4.0, 3.0, 2.0, 2.0 },
{ 5.0, 4.0, 3.0, 2.0, 1.0 }
}),
NdArray.Create(new[, ] {
{ -0.8, 1.0, 0.0, 0.0, 0.0 },
{ 1.0, -2.0, 1.0, 0.0, 0.0 },
{ 0.0, 1.0, -2.0, 1.0, 0.0 },
{ 0.0, 0.0, 1.0, -2.0, 1.0 },
{ 0.0, 0.0, 0.0, 1.0, -1.0 }
})
));
}
public void Execute()
{
// These operator is provided in `NeodymiumDotNet.Linq`.
// They are not operators of LINQ to Objects.
var source1 = NdArray.Create(new int[, , ]
{
{ { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } },
{ { 12, 13, 14, 15 }, { 16, 17, 18, 19 }, { 20, 21, 22, 23 } }
});
var source2 = NdArray.Create(new int[, , ]
{
{ { 0, -1, 2, -3 }, { 4, -5, 6, -7 }, { 8, -9, 10, -11 } },
{ { 12, -13, 14, -15 }, { 16, -17, 18, -19 }, { 20, -21, 22, -23 } }
});
// You can project each element with `Select`.
var result1 = source1.Select(x => x * 3);
WriteLine(result1);
/* result1 = NdArray({{{ 0, 3, 6, 9},
* {12, 15, 18, 21},
* {24, 27, 30, 33}},
* {{36, 39, 42, 45},
* {48, 51, 54, 57},
* {60, 63, 66, 69}}})
*/
// You can also project axes-based partial array with `Select`.
var result2 = source1.Select(new[] { 0 }, x => x.Sum());
WriteLine(result2);
/* x = NdArray({ 0, 12,}),
* NdArray({ 1, 13,}),
* ...,
* NdArray({11, 23,})
* result2 = NdArray({{12, 14, 16, 18},
* {20, 22, 24, 26},
* {28, 30, 32, 34}})
*/
var result3 = source1.Select(new[] { 0, 1 }, x => x.Sum());
WriteLine(result3);
/* x = NdArray({{ 0, 4, 8}, {12, 16, 20}}),
* NdArray({{ 1, 5, 9}, {13, 17, 21}}),
* NdArray({{ 2, 6, 10}, {14, 18, 22}}),
* NdArray({{ 3, 7, 11}, {15, 19, 23}})
* result3 = NdArray({60, 66, 72, 78})
*/
// If you want to apply calculation for each elements of 2 or more NdArrays,
// please use `Zip`.
var result4 = source1.Zip(source2, (x, y) => x + y);
WriteLine(result4);
/* result4 = NdArray({{{ 0, 0, 4, 0},
* { 8, 0, 12, 0},
* {16, 0, 20, 0}},
* {{24, 0, 28, 0},
* {32, 0, 36, 0},
* {40, 0, 44, 0}}})
*/
// You can also code following expression.
var result4_alt = (source1, source2).Zip((x, y) => x + y);
// You can filter along an axis with `Where`.
// NOTE: `Where` operator needs a single axis due to maintain rank between source and result.
var result5 = source1.Where(filterAxis: 0, x => x.Sum() < 70);
WriteLine(result5);
/* x = NdArray({{ 0, 1, 2, 3}, { 4, 5, 6, 7}, { 8, 9, 10, 11}}),
* NdArray({{ 12, 13, 14, 15}, {16, 17, 18, 19}, {20, 21, 22, 23}})
* result5 = NdArray({{{ 0, 1, 2, 3}, { 4, 5, 6, 7}, { 8, 9, 10, 11}}})
*/
var result6 = source1.Where(filterAxis: 2, x => x.Sum() % 12 == 0);
WriteLine(result6);
/* x = NdArray({{ 0, 4, 8}, {12, 16, 20}}),
* NdArray({{ 1, 5, 9}, {13, 17, 21}}),
* NdArray({{ 2, 6, 10}, {14, 18, 22}}),
* NdArray({{ 3, 7, 11}, {15, 19, 23}})
* result6 = NdArray({{{ 0, 2},
* { 4, 6},
* { 8, 10}},
* {{12, 14},
* {16, 18},
* {20, 22}}})
*/
}
/// <summary>
/// Entity of .npy binary loading, excluding header loading.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="header"></param>
/// <param name="stream"></param>
/// <returns></returns>
private static NdArray <T> LoadCore <T>(NpyHeader header, Stream stream)
{
NotSupportedException unsupportedFileFormatError()
=> new NotSupportedException(".npy binary is unsupported format.");
InvalidCastException typeMismatchError()
=> new InvalidCastException("Generic type is mismatch with .npy binary.");
var byteSize = header.NumpyType.ByteSize ?? 0;
if (byteSize == 0)
{
throw unsupportedFileFormatError();
}
var totalLength = header.Shape.TotalLength;
var bufferSize = byteSize * totalLength;
T[] core <T2>(Func <int, T2> readAt)
{
if (typeof(T) != typeof(T2))
{
throw typeMismatchError();
}
T2[] retvalArray = new T2[totalLength];
for (var i = 0; i < totalLength; ++i)
{
retvalArray[i] = readAt(i);
}
return(retvalArray as T[]);
}
var shape = header.Shape;
var buffer = new byte[bufferSize];
stream.Read(buffer, 0, bufferSize);
var converter = header.NumpyType.Endian == Endian.Little
? LittleEndiannessBitConverter.Instance
: BigEndiannessBitConverter.Instance;
switch (header.NumpyType.TypeKind)
{
case TypeKind.Boolean:
return(NdArray.Create(core(i => buffer[i] > 0), shape));
case TypeKind.UInt8:
return(NdArray.Create(core(i => buffer[i]), shape));
case TypeKind.UInt16:
return(NdArray.Create(core(i => converter.ReadPrimitive <ushort>(buffer.AsSpan(2 * i))),
shape));
case TypeKind.UInt32:
return(NdArray.Create(core(i => converter.ReadPrimitive <uint>(buffer.AsSpan(4 * i))),
shape));
case TypeKind.UInt64:
return(NdArray.Create(core(i => converter.ReadPrimitive <ulong>(buffer.AsSpan(8 * i))),
shape));
case TypeKind.Int8:
return(NdArray.Create(core(i => (sbyte)buffer[i]), shape));
case TypeKind.Int16:
return(NdArray.Create(core(i => converter.ReadPrimitive <short>(buffer.AsSpan(2 * i))),
shape));
case TypeKind.Int32:
return(NdArray.Create(core(i => converter.ReadPrimitive <int>(buffer.AsSpan(4 * i))),
shape));
case TypeKind.Int64:
return(NdArray.Create(core(i => converter.ReadPrimitive <long>(buffer.AsSpan(8 * i))),
shape));
case TypeKind.Float16:
throw new NotImplementedException();
case TypeKind.Float32:
return(NdArray.Create(core(i => converter.ReadPrimitive <float>(buffer.AsSpan(4 * i))),
shape));
case TypeKind.Float64:
return(NdArray.Create(core(i => converter.ReadPrimitive <double>(buffer.AsSpan(8 * i))),
shape));
case TypeKind.Unicode:
return
(NdArray.Create(core(i => Encoding.UTF32.GetString(buffer, byteSize * i, byteSize)),
shape));
default:
throw unsupportedFileFormatError();
}
}
public static IEnumerable <object[]> TestElementFormatArgs()
{
yield return(new object[]
{
NdArray.Create(new[] { 0, 1, 2, 3 }),
"NdArray({0000, 0001, 0002, 0003})"
});
yield return(new object[]
{
NdArray.Create(new[, ] {
{ 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 }
}),
"NdArray({{0000, 0001, 0002, 0003}," + _NewLine +
" {0004, 0005, 0006, 0007}," + _NewLine +
" {0008, 0009, 0010, 0011}})"
});
yield return(new object[]
{
NdArray.Create(new[, ]
{
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19
},
{
20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39
},
{
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
54, 55, 56, 57, 58, 59
},
{
60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
74, 75, 76, 77, 78, 79
},
{
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93,
94, 95, 96, 97, 98, 99
},
{
100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
114, 115, 116, 117, 118, 119
}
}),
"NdArray({{0000, 0001, 0002, 0003, 0004, 0005, 0006, 0007, 0008, 0009, 0010," +
_NewLine +
" 0011, 0012, 0013, 0014, 0015, 0016, 0017, 0018, 0019}," + _NewLine +
" {0020, 0021, 0022, 0023, 0024, 0025, 0026, 0027, 0028, 0029, 0030," +
_NewLine +
" 0031, 0032, 0033, 0034, 0035, 0036, 0037, 0038, 0039}," + _NewLine +
" {0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, 0048, 0049, 0050," +
_NewLine +
" 0051, 0052, 0053, 0054, 0055, 0056, 0057, 0058, 0059}," + _NewLine +
" {0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, 0068, 0069, 0070," +
_NewLine +
" 0071, 0072, 0073, 0074, 0075, 0076, 0077, 0078, 0079}," + _NewLine +
" {0080, 0081, 0082, 0083, 0084, 0085, 0086, 0087, 0088, 0089, 0090," +
_NewLine +
" 0091, 0092, 0093, 0094, 0095, 0096, 0097, 0098, 0099}," + _NewLine +
" {0100, 0101, 0102, 0103, 0104, 0105, 0106, 0107, 0108, 0109, 0110," +
_NewLine +
" 0111, 0112, 0113, 0114, 0115, 0116, 0117, 0118, 0119}})"
});
yield return(new object[]
{
NdArray.Zeros <int>(new int[] { 30, 30 }),
"NdArray({{0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" ...," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}," + _NewLine +
" {0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ..., 0000," +
_NewLine +
" 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000}})"
});
}
public static IEnumerable <object[]> TestBasicArgs()
{
yield return(new object[]
{
NdArray.Create(new[] { 0, 1, 2, 3 }),
"NdArray({0, 1, 2, 3})"
});
yield return(new object[]
{
NdArray.Create(new[, ] {
{ 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 }
}),
"NdArray({{ 0, 1, 2, 3}," + _NewLine +
" { 4, 5, 6, 7}," + _NewLine +
" { 8, 9, 10, 11}})"
});
yield return(new object[]
{
NdArray.Create(new[, ]
{
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19
},
{
20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39
},
{
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
54, 55, 56, 57, 58, 59
},
{
60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
74, 75, 76, 77, 78, 79
},
{
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93,
94, 95, 96, 97, 98, 99
},
{
100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
114, 115, 116, 117, 118, 119
}
}),
"NdArray({{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13," +
_NewLine +
" 14, 15, 16, 17, 18, 19}," + _NewLine +
" { 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33," +
_NewLine +
" 34, 35, 36, 37, 38, 39}," + _NewLine +
" { 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53," +
_NewLine +
" 54, 55, 56, 57, 58, 59}," + _NewLine +
" { 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73," +
_NewLine +
" 74, 75, 76, 77, 78, 79}," + _NewLine +
" { 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93," +
_NewLine +
" 94, 95, 96, 97, 98, 99}," + _NewLine +
" {100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113," +
_NewLine +
" 114, 115, 116, 117, 118, 119}})"
});
yield return(new object[]
{
NdArray.Zeros <int>(new int[] { 30, 30 }),
"NdArray({{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" ...," + _NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}," +
_NewLine +
" {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}})"
});
}
public void Slice()
{
void core(NdArray <int> input, IndexOrRange[] indices, NdArray <int> ans)
=> Assert.Equal(ans, input[indices]);
core(NdArray.Create(new int[] { 0, 1, 2, 3, 4, 5, 6, 7 }),
new IndexOrRange[] { Range.Create(0, 8) },
NdArray.Create(new int[] { 0, 1, 2, 3, 4, 5, 6, 7 })
);
core(NdArray.Create(new int[] { 0, 1, 2, 3, 4, 5, 6, 7 }),
new IndexOrRange[] { Range.Create(0, 4) },
NdArray.Create(new int[] { 0, 1, 2, 3 })
);
core(NdArray.Create(new int[] { 0, 1, 2, 3, 4, 5, 6, 7 }),
new IndexOrRange[] { Range.Create(0, -4) },
NdArray.Create(new int[] { 0, 1, 2, 3 })
);
core(NdArray.Create(new int[] { 0, 1, 2, 3, 4, 5, 6, 7 }),
new IndexOrRange[] { Range.Create(0, 8, 2) },
NdArray.Create(new int[] { 0, 2, 4, 6 })
);
core(NdArray.Create(new int[, ] {
{ 0, 1, 2, 3, 4 }, { 5, 6, 7, 8, 9 }, { 10, 11, 12, 13, 14 }, { 15, 16, 17, 18, 19 }
}),
new IndexOrRange[] { Range.Create(0, 4), Range.Create(0, 5) },
NdArray.Create(new int[, ]
{
{ 0, 1, 2, 3, 4 }, { 5, 6, 7, 8, 9 }, { 10, 11, 12, 13, 14 },
{ 15, 16, 17, 18, 19 }
})
);
core(NdArray.Create(new int[, ] {
{ 0, 1, 2, 3, 4 }, { 5, 6, 7, 8, 9 }, { 10, 11, 12, 13, 14 }, { 15, 16, 17, 18, 19 }
}),
new IndexOrRange[] { Range.Create(1, 3), Range.Create(1, 4) },
NdArray.Create(new int[, ] {
{ 6, 7, 8 }, { 11, 12, 13 }
})
);
core(NdArray.Create(new int[, ] {
{ 0, 1, 2, 3, 4 }, { 5, 6, 7, 8, 9 }, { 10, 11, 12, 13, 14 }, { 15, 16, 17, 18, 19 }
}),
new IndexOrRange[] { Range.Create(1, -1), Range.Create(1, -1) },
NdArray.Create(new int[, ] {
{ 6, 7, 8 }, { 11, 12, 13 }
})
);
core(NdArray.Create(new int[, ] {
{ 0, 1, 2, 3, 4 }, { 5, 6, 7, 8, 9 }, { 10, 11, 12, 13, 14 }, { 15, 16, 17, 18, 19 }
}),
new IndexOrRange[] { Range.Create(1, 4, 2), Range.Create(1, 4, 2) },
NdArray.Create(new int[, ] {
{ 6, 8 }, { 16, 18 }
})
);
core(NdArray.Create(new int[, , ]
{
{
{ 0, 1, 2, 3, 4, 5 }, { 10, 11, 12, 13, 14, 15 },
{ 20, 21, 22, 23, 24, 25 }, { 30, 31, 32, 33, 34, 35 },
{ 40, 41, 42, 43, 44, 45 }
},
{
{ 100, 101, 102, 103, 104, 105 }, { 110, 111, 112, 113, 114, 115 },
{ 120, 121, 122, 123, 124, 125 }, { 130, 131, 132, 133, 134, 135 },
{ 140, 141, 142, 143, 144, 145 }
},
{
{ 200, 201, 202, 203, 204, 205 }, { 210, 211, 212, 213, 214, 215 },
{ 220, 221, 222, 223, 224, 225 }, { 230, 231, 232, 233, 234, 235 },
{ 240, 241, 242, 243, 244, 245 }
},
{
{ 300, 301, 302, 303, 304, 305 }, { 310, 311, 312, 313, 314, 315 },
{ 320, 321, 322, 323, 324, 325 }, { 330, 331, 332, 333, 334, 335 },
{ 340, 341, 342, 343, 344, 345 }
},
}),
new IndexOrRange[]
{ Range.Create(0, 4), Range.Create(0, 5), Range.Create(0, 6) },
NdArray.Create(new int[, , ]
{
{
{ 0, 1, 2, 3, 4, 5 }, { 10, 11, 12, 13, 14, 15 },
{ 20, 21, 22, 23, 24, 25 }, { 30, 31, 32, 33, 34, 35 },
{ 40, 41, 42, 43, 44, 45 }
},
{
{ 100, 101, 102, 103, 104, 105 }, { 110, 111, 112, 113, 114, 115 },
{ 120, 121, 122, 123, 124, 125 }, { 130, 131, 132, 133, 134, 135 },
{ 140, 141, 142, 143, 144, 145 }
},
{
{ 200, 201, 202, 203, 204, 205 }, { 210, 211, 212, 213, 214, 215 },
{ 220, 221, 222, 223, 224, 225 }, { 230, 231, 232, 233, 234, 235 },
{ 240, 241, 242, 243, 244, 245 }
},
{
{ 300, 301, 302, 303, 304, 305 }, { 310, 311, 312, 313, 314, 315 },
{ 320, 321, 322, 323, 324, 325 }, { 330, 331, 332, 333, 334, 335 },
{ 340, 341, 342, 343, 344, 345 }
},
})
);
core(NdArray.Create(new int[, , ]
{
{
{ 0, 1, 2, 3, 4, 5 }, { 10, 11, 12, 13, 14, 15 },
{ 20, 21, 22, 23, 24, 25 }, { 30, 31, 32, 33, 34, 35 },
{ 40, 41, 42, 43, 44, 45 }
},
{
{ 100, 101, 102, 103, 104, 105 }, { 110, 111, 112, 113, 114, 115 },
{ 120, 121, 122, 123, 124, 125 }, { 130, 131, 132, 133, 134, 135 },
{ 140, 141, 142, 143, 144, 145 }
},
{
{ 200, 201, 202, 203, 204, 205 }, { 210, 211, 212, 213, 214, 215 },
{ 220, 221, 222, 223, 224, 225 }, { 230, 231, 232, 233, 234, 235 },
{ 240, 241, 242, 243, 244, 245 }
},
{
{ 300, 301, 302, 303, 304, 305 }, { 310, 311, 312, 313, 314, 315 },
{ 320, 321, 322, 323, 324, 325 }, { 330, 331, 332, 333, 334, 335 },
{ 340, 341, 342, 343, 344, 345 }
},
}),
new IndexOrRange[]
{ Range.Create(1, 3), Range.Create(1, 4), Range.Create(1, 5) },
NdArray.Create(new int[, , ]
{
{ { 111, 112, 113, 114 }, { 121, 122, 123, 124 }, { 131, 132, 133, 134 } },
{ { 211, 212, 213, 214 }, { 221, 222, 223, 224 }, { 231, 232, 233, 234 } },
})
);
core(NdArray.Create(new int[, , ]
{
{
{ 0, 1, 2, 3, 4, 5 }, { 10, 11, 12, 13, 14, 15 },
{ 20, 21, 22, 23, 24, 25 }, { 30, 31, 32, 33, 34, 35 },
{ 40, 41, 42, 43, 44, 45 }
},
{
{ 100, 101, 102, 103, 104, 105 }, { 110, 111, 112, 113, 114, 115 },
{ 120, 121, 122, 123, 124, 125 }, { 130, 131, 132, 133, 134, 135 },
{ 140, 141, 142, 143, 144, 145 }
},
{
{ 200, 201, 202, 203, 204, 205 }, { 210, 211, 212, 213, 214, 215 },
{ 220, 221, 222, 223, 224, 225 }, { 230, 231, 232, 233, 234, 235 },
{ 240, 241, 242, 243, 244, 245 }
},
{
{ 300, 301, 302, 303, 304, 305 }, { 310, 311, 312, 313, 314, 315 },
{ 320, 321, 322, 323, 324, 325 }, { 330, 331, 332, 333, 334, 335 },
{ 340, 341, 342, 343, 344, 345 }
},
}),
new IndexOrRange[]
{ Range.Create(1, -1), Range.Create(1, -1), Range.Create(1, -1) },
NdArray.Create(new int[, , ]
{
{ { 111, 112, 113, 114 }, { 121, 122, 123, 124 }, { 131, 132, 133, 134 } },
{ { 211, 212, 213, 214 }, { 221, 222, 223, 224 }, { 231, 232, 233, 234 } },
})
);
core(NdArray.Create(new int[, , ]
{
{
{ 0, 1, 2, 3, 4, 5 }, { 10, 11, 12, 13, 14, 15 },
{ 20, 21, 22, 23, 24, 25 }, { 30, 31, 32, 33, 34, 35 },
{ 40, 41, 42, 43, 44, 45 }
},
{
{ 100, 101, 102, 103, 104, 105 }, { 110, 111, 112, 113, 114, 115 },
{ 120, 121, 122, 123, 124, 125 }, { 130, 131, 132, 133, 134, 135 },
{ 140, 141, 142, 143, 144, 145 }
},
{
{ 200, 201, 202, 203, 204, 205 }, { 210, 211, 212, 213, 214, 215 },
{ 220, 221, 222, 223, 224, 225 }, { 230, 231, 232, 233, 234, 235 },
{ 240, 241, 242, 243, 244, 245 }
},
{
{ 300, 301, 302, 303, 304, 305 }, { 310, 311, 312, 313, 314, 315 },
{ 320, 321, 322, 323, 324, 325 }, { 330, 331, 332, 333, 334, 335 },
{ 340, 341, 342, 343, 344, 345 }
},
}),
new IndexOrRange[]
{ Range.Create(0, 4, 3), Range.Create(0, 5, 3), Range.Create(0, 6, 3) },
NdArray.Create(new int[, , ]
{
{ { 0, 3, }, { 30, 33 } },
{ { 300, 303, }, { 330, 333 } },
})
);
}