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netcdf-c

The Unidata network Common Data Form (netCDF) in C is an interface for scientific data access and a set of freely-distributed software libraries that provide an implementation of the interface.
https://github.com/Unidata/netcdf-c

Category: Climate Change
Sub Category: Climate Data Standards

Keywords

c hacktoberfest netcdf unidata unidata-netcdf

Keywords from Contributors

climate netcdf4 weather netcdf-fortran netcdf-library grib atmospheric-science meteorology geospatial-data snl-applications

Last synced: about 22 hours ago
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Repository metadata

Official GitHub repository for netCDF-C libraries and utilities.

README.md

Unidata NetCDF

latest packaged version(s)

About

The Unidata network Common Data Form (netCDF) is an interface for
scientific data access and a freely-distributed software library that
provides an implementation of the interface. The netCDF library also
defines a machine-independent format for representing scientific data.
Together, the interface, library, and format support the creation,
access, and sharing of scientific data. The current netCDF software
provides C interfaces for applications and data. Separate software
distributions available from Unidata provide Java, Fortran, Python,
and C++ interfaces. They have been tested on various common
platforms.

Properties

NetCDF files are self-describing, network-transparent, directly
accessible, and extendible. Self-describing means that a netCDF file
includes information about the data it contains. Network-transparent
means that a netCDF file is represented in a form that can be accessed
by computers with different ways of storing integers, characters, and
floating-point numbers. Direct-access means that a small subset of a
large dataset may be accessed efficiently, without first reading through
all the preceding data. Extendible means that data can be appended to
a netCDF dataset without copying it or redefining its structure.

Use

NetCDF is useful for supporting access to diverse kinds of scientific
data in heterogeneous networking environments and for writing
application software that does not depend on application-specific
formats. For information about a variety of analysis and display
packages that have been developed to analyze and display data in
netCDF form, see

More information

For more information about netCDF, see

Latest releases

You can obtain a copy of the latest released version of netCDF
software for various languages:

Copyright

Copyright and licensing information can be found here, as well as in the COPYRIGHT file accompanying the software

Installation

To install the netCDF-C software, please see the file INSTALL in the
netCDF-C distribution, or the (usually more up-to-date) document:

Documentation

A language-independent User's Guide for netCDF, and some other
language-specific user-level documents are available from:

A mailing list, netcdfgroup@unidata.ucar.edu, exists for discussion of
the netCDF interface and announcements about netCDF bugs, fixes, and
enhancements. For information about how to subscribe, see the URL

Feedback

We appreciate feedback from users of this package. Please send comments, suggestions, and bug reports to support-netcdf@unidata.ucar.edu.

Citation (CITATION.cff)

# This CITATION.cff file was generated with cffinit.
# Visit https://bit.ly/cffinit to generate yours today!

cff-version: 1.2.0
title: 'NetCDF-C '
message: >-
  If you use this software, please cite it using the
  metadata from this file.
type: software
authors:
  - name: NSF Unidata
    website: 'https://unidata.ucar.edu'
  - given-names: Glenn
    family-names: Davis
    affiliation: UCAR/Unidata
  - given-names: Russ
    family-names: Rew
    affiliation: UCAR/Unidata
  - given-names: Dennis
    family-names: Heimbigner
    affiliation: UCAR/Unidata
  - given-names: Edward
    family-names: Hartnett
    affiliation: 'UCAR/Unidata, NOAA'
  - given-names: Ward
    family-names: Fisher
    affiliation: UCAR/Unidata
  - given-names: Many
    family-names: Others
    affiliation: >-
      https://github.com/Unidata/netcdf-c/blob/main/docs/credits.md
identifiers:
  - type: doi
    value: 10.5065/D6H70CW6
    description: NetCDF-C library
  - type: url
    value: 'https://www.unidata.ucar.edu/software/netcdf/'
    description: NetCDF Homepage
repository-code: 'https://github.com/Unidata/netcdf-c'
keywords:
  - data
  - netcdf
  - netcdf-c
  - data model
  - software
  - NSF
license: BSD-3-Clause
contact:
  - name: Unidata
    city: Boulder
    region: Colorado
    country: US
    email: support@unidata.ucar.edu
    tel: 303-497-8643
    fax: 303-497-8690
    website: 'https://www.unidata.ucar.edu'
doi: 10.5065/D6H70CW6
abstract: >
    NetCDF (Network Common Data Form) is a set of software libraries and machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data. It is also a community standard for sharing scientific data. The Unidata Program Center supports and maintains netCDF programming interfaces for C, C++, Java, and Fortran. Programming interfaces are also available for Python, IDL, MATLAB, R, Ruby, and Perl.

Owner metadata

GitHub Events

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Last Year

Committers metadata

Last synced: about 2 months ago

Total Commits: 8,095
Total Committers: 117
Avg Commits per committer: 69.188
Development Distribution Score (DDS): 0.76

Commits in past year: 352
Committers in past year: 16
Avg Commits per committer in past year: 22.0
Development Distribution Score (DDS) in past year: 0.472

Name Email Commits
Ward Fisher w****r@u****u 1946
Ed Hartnett e****t@g****m 1339
Dennis Heimbigner d****h@u****u 1238
Ward Fisher w****r@u****u 1063
Edward Hartnett e****t@n****v 583
Dennis Heimbigner d****h@u****u 479
Russ Rew r****s@u****u 329
Greg Sjaardema g****a@g****m 168
Peter Hill p****l@y****k 141
Kyle Shores k****4@g****m 125
Wei-keng Liao w****o 97
Wei-keng Liao w****o@e****u 60
DWesl 2****l 42
Scot Breitenfeld b****d@h****g 34
Quincey Koziol q****y@k****c 30
Sean McBride s****n@r****m 28
Ben Boeckel b****l@k****m 27
Milton Woods m****s@g****m 27
Manuel Reis r****s@d****e 25
Jennifer Oxelson o****n@u****u 23
Nico Schlömer n****r@g****m 18
Dave Allured d****d@n****v 16
Charlie Zender z****r@u****u 13
Tobias Kölling t****g@p****e 12
Magnus Ulimoen m****u@m****o 11
Orion Poplawski o****n@n****m 11
Even Rouault e****t@s****m 11
Greg Sjaardema g****r@s****v 10
dkjsone 2****e 8
Bas Couwenberg s****c@x****l 6
and 87 more...

Committer domains:

Issue and Pull Request metadata

Last synced: about 2 months ago

Total issues: 1,537
Total pull requests: 1,736
Average time to close issues: 5 months
Average time to close pull requests: 30 days
Total issue authors: 329
Total pull request authors: 132
Average comments per issue: 5.42
Average comments per pull request: 2.61
Merged pull request: 1,392
Bot issues: 0
Bot pull requests: 4

Past year issues: 52
Past year pull requests: 122
Past year average time to close issues: 9 days
Past year average time to close pull requests: 12 days
Past year issue authors: 37
Past year pull request authors: 18
Past year average comments per issue: 1.46
Past year average comments per pull request: 1.43
Past year merged pull request: 81
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/Unidata/netcdf-c

Top Issue Authors

  • edhartnett (367)
  • edwardhartnett (204)
  • WardF (138)
  • DennisHeimbigner (57)
  • gsjaardema (41)
  • czender (35)
  • nschloe (30)
  • opoplawski (26)
  • abhibaruah (24)
  • jswhit (23)
  • wkliao (21)
  • Alexander-Barth (20)
  • ArchangeGabriel (16)
  • Dave-Allured (15)
  • sebastic (15)

Top Pull Request Authors

  • DennisHeimbigner (387)
  • WardF (345)
  • edhartnett (238)
  • edwardhartnett (154)
  • gsjaardema (135)
  • wkliao (54)
  • ZedThree (54)
  • mannreis (22)
  • nschloe (19)
  • Dave-Allured (16)
  • mathstuf (15)
  • seanm (14)
  • opoplawski (13)
  • K20shores (12)
  • qkoziol (12)

Top Issue Labels

  • type/bug (92)
  • area/netcdf4 (43)
  • type/enhancement (43)
  • status/under review (38)
  • area/build/cmake (29)
  • area/tests (28)
  • area/documentation (27)
  • type/feature request (26)
  • area/parallel (24)
  • area/utils (24)
  • status/confirmed (24)
  • area/DAP2 (21)
  • status/fix required (21)
  • status/revisit (15)
  • platform/windows (14)
  • area/general (13)
  • arch/any (13)
  • platform/any (13)
  • area/DAP4 (13)
  • priority/high (12)
  • area/build/all (12)
  • type/question (11)
  • status/more information needed (9)
  • status/under consideration (9)
  • area/build/autoconf (8)
  • resolution/patch welcome (8)
  • status/can't duplicate (8)
  • area/netcdf3 (7)
  • type/clarification (7)
  • area/nczarr (6)

Top Pull Request Labels

  • status/under review (19)
  • area/build/cmake (17)
  • type/enhancement (15)
  • area/parallel (13)
  • priority/high (11)
  • area/tests (10)
  • type/bug (9)
  • area/documentation (9)
  • area/netcdf4 (8)
  • area/build/all (6)
  • priority/low (6)
  • area/DAP4 (5)
  • platform/windows (4)
  • area/DAP2 (4)
  • area/build/autoconf (4)
  • area/utils (3)
  • rebase (3)
  • area/compression_plugins (3)
  • status/under consideration (3)
  • arch/any (2)
  • dependencies (2)
  • type/information (2)
  • Conflict Resolved (2)
  • area/compilers (2)
  • area/static analysis (2)
  • reason/test failure (2)
  • area/hdf5 (1)
  • status/rejected (1)
  • status/confirmed (1)
  • status/fix required (1)

Package metadata

proxy.golang.org: github.com/unidata/netcdf-c

  • Homepage:
  • Documentation: https://pkg.go.dev/github.com/unidata/netcdf-c#section-documentation
  • Licenses: bsd-3-clause
  • Latest release: v4.9.3+incompatible (published 11 months ago)
  • Last Synced: 2025-10-29T20:52:16.712Z (about 2 months ago)
  • Versions: 49
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent packages count: 6.999%
    • Average: 8.173%
    • Dependent repos count: 9.346%
proxy.golang.org: github.com/Unidata/netcdf-c

  • Homepage:
  • Documentation: https://pkg.go.dev/github.com/Unidata/netcdf-c#section-documentation
  • Licenses: bsd-3-clause
  • Latest release: v4.9.3+incompatible (published 11 months ago)
  • Last Synced: 2025-10-29T20:52:16.849Z (about 2 months ago)
  • Versions: 49
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent packages count: 6.999%
    • Average: 8.173%
    • Dependent repos count: 9.346%
conda-forge.org: libnetcdf

  • Homepage: http://www.unidata.ucar.edu/software/netcdf/
  • Licenses: MIT
  • Latest release: 4.9.0 (published about 3 years ago)
  • Last Synced: 2025-10-29T20:52:19.963Z (about 2 months ago)
  • Versions: 15
  • Dependent Packages: 63
  • Dependent Repositories: 331
  • Rankings:
    • Dependent packages count: 1.203%
    • Dependent repos count: 1.642%
    • Average: 8.314%
    • Forks count: 11.6%
    • Stargazers count: 18.812%
anaconda.org: libnetcdf

The Unidata network Common Data Form (netCDF) is an interface for scientific data access and a freely-distributed software library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data. The current netCDF software provides C interfaces for applications and data. Separate software distributions available from Unidata provide Java, Fortran, Python, and C++ interfaces. They have been tested on various common platforms.

  • Homepage: https://github.com/Unidata/netcdf-c
  • Licenses: BSD-3-Clause
  • Latest release: 4.9.3 (published 3 months ago)
  • Last Synced: 2025-10-29T20:52:16.436Z (about 2 months ago)
  • Versions: 7
  • Dependent Packages: 3
  • Dependent Repositories: 331
  • Rankings:
    • Dependent repos count: 9.629%
    • Dependent packages count: 13.462%
    • Average: 19.005%
    • Forks count: 21.251%
    • Stargazers count: 31.677%

Dependencies

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Score: 18.11520448992632