Name: ndarray-concat-rows
Owner: scijs
Description: Concatenate ndarrays by row (along the first dimension)
Created: 2016-01-05 14:38:26.0
Updated: 2016-12-21 01:58:08.0
Pushed: 2016-01-05 14:45:30.0
Homepage: null
Size: 8
Language: JavaScript
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Concatenate ndarrays by row (along the first dimension)
This module takes a list of input ndarrays and concatenates it along the first dimension. That is, a 3 × 2 ndarray concatenated with a 10 × 2 ndarray yields a 13 × 2 ndarray.
Understanding (+) in the comments below to indicate row concatenation,
ndarray = require('ndarray')
r = require('ndarray-concat-rows')
oncatenating vectors:
[1 2] (+) [3 4] -> [1 2 3 4]
ndarray([1, 2]), ndarray([3, 4]) ])
> ndarray([1, 2, 3, 4])
oncatenating matrices:
[1 2]
[1 2] [5 6] [3 4]
[3 4] (+) [7 8] -> [4 5]
[9 10] [7 8]
[9 10]
ndarray([1, 2, 3, 4], [2, 2]), ndarray([5, 6, 7, 8, 9, 10], [3, 2]) ])
> ndarray([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [5, 2])
m install ndarray-concat-rows
require('ndarray-concat-rows')([output,] input, [options])Arguments:
output (optional): An optional output destination. The shape must match the shape of the concatenated arrays, otherwise an error will be thrown. If not provided, storage will be allocated using ndarray-scratch.input: A javascript Array containing ndarrays to be concatenated. If this is missing or empty, an error will be thrown. Given n-dimensional input, all arguments must have the same dimensionality and the last n-1 dimensions of each arguments must have the same length.options (optional): An optional object containing options. Options are:dtype: If no output ndarray is provided, the dtype of the output will be double (equivalently float64) by default, or otherwise the dtype specified here. See ndarray dtypes.Returns: A reference to the output ndarray containing the concatenated data.
© 2016 Ricky Reusser. MIT License.