IVirtualVectorSource<'V> (Deedle)

IVirtualVectorSource<'V> Type

Namespace: Deedle.Vectors.Virtual
Assembly: Deedle.dll
Base Type: obj
All Interfaces: IVirtualVectorSource<'V> , IVirtualVectorSource

Represents a data source for Big Deedle. The interface is used both as a representation of data source for `VirtualVector` (this file) and `VirtualIndex` (another file). The index uses `Length` and `ValueAt` to perform binary search when looking for a key; the vector simply provides an access to values using `ValueAt`.

Instance members

Instance member	Description
`this.GetSubVector` Full Usage: `this.GetSubVector` Parameters: arg0 : `RangeRestriction<Address>` Returns: `IVirtualVectorSource<'V>` Modifiers: abstract	Returns a virtual source for the specified range (used when performing splicing on the frame/series, both using address or using keys - which are obtained using Lookup) arg0 : `RangeRestriction<Address>` Returns: `IVirtualVectorSource<'V>`
`this.LookupRange` Full Usage: `this.LookupRange` Parameters: arg0 : `'V` Returns: `RangeRestriction<Address>` Modifiers: abstract	Find a range (continuous or a sequence of indices) such that all values in the range are the specified value. This is used, for example, when filtering frame based on column value (say column "PClass" has a value "1"). If the data source has some "clever" representation of the range, it can return `Custom of IVectorRange` - which is then passed to `GetSubVector`. arg0 : `'V` Returns: `RangeRestriction<Address>`
`this.LookupValue` Full Usage: `this.LookupValue` Parameters: arg0 : `'V` arg1 : `Lookup` arg2 : `Func<Address, bool>` Returns: `OptionalValue<'V * Address>` Modifiers: abstract	Find the address associated with the specified value. This is used by the index and it has the same signature as `IIndex<'K>.Lookup` (see `Index.fs`). arg0 : `'V` arg1 : `Lookup` arg2 : `Func<Address, bool>` Returns: `OptionalValue<'V * Address>`
`this.MergeWith` Full Usage: `this.MergeWith` Parameters: arg0 : `IVirtualVectorSource<'V> seq` Returns: `IVirtualVectorSource<'V>` Modifiers: abstract	Merge the current source with a list of other sources (used by functions such as `Frame.merge` and `Frame.mergeAll`) arg0 : `IVirtualVectorSource<'V> seq` Returns: `IVirtualVectorSource<'V>`
`this.ValueAt` Full Usage: `this.ValueAt` Parameters: arg0 : `IVectorLocation` Returns: `OptionalValue<'V>` Modifiers: abstract	Returns the value at the specifid address. We assume that the address is in range [0L, Length-1L] and that each location has a value (or has a missing value, but is valid) arg0 : `IVectorLocation` Returns: `OptionalValue<'V>`