Nuclear Pumpkin Mocha

    climate-data-operators

    0.1.0 • Public • Published

    climate-data-operators

    Minimalistic NodeJS wrapper for CDO

    CDO is a collection of command line Operators to manipulate and analyse Climate and NWP model Data. Supported data formats are GRIB 1/2, netCDF 3/4, SERVICE, EXTRA and IEG. There are more than 600 operators available.

    Usage

    Install climate-data-operators

    npm install --save climate-data-operators

    Use with distribution-provided CDO (best)

    sudo apt install cdo

    const CDO = require('climate-data-operators')
    const cdo = new CDO()
    cdo.exec(['--help']).then(...)
    cdo.exec(['operator', 'argument1', 'argument2'...]).then(...)

    Use with precompiled binary

    This scenario is useful where APT is not available (ie: serverless functions).

    climate-data-operators-bin provides precompiled binary for Ubuntu 18.04 (no external dependency is required)

    # install cdo precompiled binary 
    npm install --save climate-data-operators-bin
     
    # install eccodes-lib data for file format you need 
    # see https://www.npmjs.com/package/eccodes-lib 
    # example: 
    npm install --save eccodes-data-grib1
    npm install --save eccodes-data-grib2
    const CDO = require('climate-data-operators')
    const CDOCustomBinary = require('climate-data-operators-bin')
    const grib1FormatData = require('eccodes-data-grib1')
    const grib2FormatData = require('eccodes-data-grib2')
     
    const demo = async () => {
      const cdo = new CDO(CDOCustomBinary)
     
      await cdo.loadEcData([ grib1FormatData, grib2FormatData ])
     
      await cdo.exec(['--help']).then(...)
      await cdo.exec(['operator', 'argument1', 'argument2'...]).then(...)
     
      // delete temporary format data
      // (needed only when using CDOCustomBinary)
      await cdo.cleanup()
    }
    demo()

    CDO commands

    See CDO Reference Card for a list of usefull commands

    Install

    npm i climate-data-operators

    DownloadsWeekly Downloads

    0

    Version

    0.1.0

    License

    MIT

    Unpacked Size

    4.47 kB

    Total Files

    4

    Last publish

    Collaborators

    • nbald