kmath-core/space.kscience.kmath.linear/VirtualMatrix

VirtualMatrix

class VirtualMatrix<out T : Any>(rowNum: Int, colNum: Int, generator: (i: Int, j: Int) -> T) : Structure2D<T>
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The matrix where each element is evaluated each time when is being accessed.

Constructors

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fun <out T : Any> VirtualMatrix(rowNum: Int, colNum: Int, generator: (i: Int, j: Int) -> T)
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Functions

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@PerformancePitfall
open override fun elements(): Sequence<Pair<IntArray, T>>
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Returns the sequence of all the elements associated by their indices.

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open operator override fun get(index: IntArray): T
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Returns the value at the specified indices.

open operator override fun get(i: Int, j: Int): T
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Retrieves an element from the structure by two indices.

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open override fun <F : StructureFeature> getFeature(type: KClass<out F>): F?
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Feature is some additional structure information that allows to access it special properties or hints. If the feature is not present, null is returned.

Properties

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open override val colNum: Int
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The number of columns in this structure.

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@PerformancePitfall
open val columns: List<Buffer<T>>
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The buffer of columns of this structure. It gets elements from the structure dynamically.

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open val dimension: Int
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The count of dimensions in this structure. It should be equal to size of shape.

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val generator: (i: Int, j: Int) -> T
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the function that provides elements.

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open val indices: ShapeIndexer
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open override val rowNum: Int
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The number of rows in this structure.

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@PerformancePitfall
open val rows: List<Buffer<T>>
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The buffer of rows of this structure. It gets elements from the structure dynamically.

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open override val shape: IntArray
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The shape of structure i.e., non-empty sequence of non-negative integers that specify sizes of dimensions of this structure.

Sources

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