nco ☆
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Description:
Command-line operators for netCDF and HDF files
Type: Formula  |  Latest Version: 5.3.6@0  |  Tracked Since: Oct 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: netcdf hdf scientific-computing data-analysis climate-data
Install: brew install nco
About:
NCO (netCDF Operators) is a suite of command-line programs that facilitate the manipulation and analysis of scientific data stored in netCDF and HDF formats. It provides high-level operations like averaging, slicing, and hyperslab selection directly on large datasets without needing to load them entirely into memory. This tool is essential for researchers and data scientists working with climate, oceanographic, and atmospheric model outputs.
Key Features:
  • Command-line interface for batch processing and automation
  • Supports netCDF3, netCDF4, HDF4, and HDF5 file formats
  • Memory-efficient processing of large multi-dimensional arrays
  • Mathematical and statistical operators for data analysis
Use Cases:
  • Extracting specific time ranges or spatial regions from climate model outputs
  • Calculating monthly or yearly averages from daily sensor data
  • Merging multiple netCDF files into a single dataset
Alternatives:
  • CDO – Climate Data Operators is a similar tool with a focus on meteorological data, often offering faster performance for specific operations.
  • Python (xarray) – A library offering a more programmatic and interactive approach, ideal for complex analysis workflows but requires a Python environment.
Version History
Detected Version Rev Change Commit
Oct 28, 2025 11:18pm 0 VERSION_BUMP 2e08f262
Sep 16, 2025 11:37pm 0 VERSION_BUMP 28f50aed
Jan 13, 2025 3:10am 0 VERSION_BUMP a2c5808f
Jan 13, 2025 2:30am 0 VERSION_BUMP 94e7c737
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