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loompy

This package provides a way to create loompy files in Node.

Installation

This package depends on hdf5.node, you need to specify your libhdf5 location when installing for this dependency to compile correctly. Read their readme for more details.

Example:

npm install loompy --hdf5_home_linux=/usr/lib/x86_64-linux-gnu/hdf5/serial

API

loompy.create(filename, matrix, rowAttrs, colAttrs)

argument type comment
filename string Path of the file to create
matrix TypedArray[] Matrix of data, as an array of TypedArrays
rowAttrs Object<string:Array> Row attributes
colAttrs Object<string:Array> Column attributes

Example:

const loompy = require('loompy')


const filename = 'example.loom'

const matrix =
  Array(10).fill(0).map((_, i) =>
    new Float64Array(10).map((_, j) => j < 5 ? 1 : 2))

const row_attrs = { someTextAttributes: Array.from({ length: 10 }, (_, i) => `Element ${i * i * i}`) }
const col_attrs = { someDoubleAttributes: new Float64Array(10).map((_, i) => i) }

loompy.create(filename, matrix, row_attrs, col_attrs)

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Create loompy files with Nodejs

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