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higlass-zarr-datafetchers

v0.3.0-next.3

Published

Fetch HiGlass track data from Zarr stores

Downloads

589

Readme

npm npm bundle size

higlass-zarr-datafetchers

This repository contains plugin data fetchers for loading Zarr-based files in HiGlass. These plugins allow data to be stored in object stores such as S3 (rather than using higlass-server). Plugin data fetchers can be registered using higlass-register.

Installation

yarn add zarr # peer dependency
yarn add higlass-register # helpers for plugin registration
yarn add higlass-zarr-datafetchers

Register plugin data fetchers

import register from "higlass-register";
import { ZarrMultivecDataFetcher } from "higlass-zarr-datafetchers";

register(
    { dataFetcher: ZarrMultivecDataFetcher, config: ZarrMultivecDataFetcher.config },
    { pluginType: "dataFetcher" }
);

Use in a HiGlass view config track definition

List of data fetchers currently implemented:

  • zarr-multivec (register with ZarrMultivecDataFetcher)

    • Use this data fetcher with a horizontal-multivec track to visualize multi-sample genome-wide continuous data.
    {
        "type": "horizontal-multivec",
        "uid": "demo-multivec-track",
        "data": {
            "type": "zarr-multivec",
            "url": "//higlass-serverless.s3.amazonaws.com/multivec/Homo_sapiens__AFF4__all.multires.zarr",
        },
    }
    • Alternatively, use this data fetcher with a horizontal-bar track to visualize single-sample genome-wide continuous data (one row of a multi-sample file).
    {
        "type": "horizontal-bar",
        "uid": "demo-bar-track",
        "data": {
            "type": "zarr-multivec",
            "url": "//higlass-serverless.s3.amazonaws.com/multivec/Homo_sapiens__AFF4__all.multires.zarr",
            "row": 0, // specify the index of a row of interest
        },
    }

Develop

Install dependencies

yarn

Run the demo

yarn run start

Build

yarn run build

Conversion resources

Coming soon: higlass-zarr-converters

For the current demo, Zarr files were generated using this script