Method: NMatrix.seq

Defined in:

lib/nmatrix/shortcuts.rb

.seq(shape, options = {}) ⇒ Object

call-seq:

seq(shape) -> NMatrix
seq(shape, options) -> NMatrix
bindgen(shape) -> NMatrix of :byte
indgen(shape) -> NMatrix of :int64
findgen(shape) -> NMatrix of :float32
dindgen(shape) -> NMatrix of :float64
cindgen(shape) -> NMatrix of :complex64
zindgen(shape) -> NMatrix of :complex128
rbindgen(shape) -> NMatrix of :object

Creates a matrix filled with a sequence of integers starting at zero.

• Arguments :

  • shape -> Array (or integer for square matrix) specifying the dimensions.

  • options -> (optional) Options permissible for NMatrix#initialize

• Returns :

  • NMatrix filled with values 0 through size.

Examples:

NMatrix.seq(2) # =>   0   1
              2   3

NMatrix.seq([3, 3], dtype: :float32) # =>  0.0  1.0  2.0
                                    3.0  4.0  5.0
                                    6.0  7.0  8.0

# File 'lib/nmatrix/shortcuts.rb', line 838

def seq(shape, options={})

  # Construct the values of the final matrix based on the dimension.
  values = (0 ... NMatrix.size(shape)).to_a

  # It'll produce :int32, except if a dtype is provided.
  NMatrix.new(shape, values, {:stype => :dense}.merge(options))
end