NCL

The NCAR Command Language is a scripting language for the analysis and visualization of climate and weather data.
https://github.com/NCAR/ncl

Category: Climate Change
Sub Category: Climate Data Processing and Analysis

Keywords from Contributors

ncl geocat geocat-examples wrf wrf-arw geocat-comp climate grib hugo geocat-viz

Last synced: about 7 hours ago
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Repository metadata

The NCAR Command Language (NCL) is a scripting language for the analysis and visualization of climate and weather data.

Host: GitHub
URL: https://github.com/NCAR/ncl
Owner: NCAR
License: other
Created: 2016-09-01T01:34:28.000Z (over 8 years ago)
Default Branch: develop
Last Pushed: 2025-04-03T18:13:14.000Z (24 days ago)
Last Synced: 2025-04-17T17:39:29.756Z (10 days ago)
Language: C
Homepage: http://www.ncl.ucar.edu
Size: 79 MB
Stars: 273
Watchers: 35
Forks: 69
Open Issues: 132
Releases: 0
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md

NCAR Command Language

[!WARNING]
NCL was placed in maintenance mode as of 2019. You can find more details in the most recent announcement here.

This is the source code for the NCAR Command Language (NCL).

NCL is a scripting language for the analysis and visualization of climate and weather data.

Supports NetCDF, GRIB, HDF, HDF-EOS, and shapefile data formats
Has hundreds of built-in computational routines
Produces high-quality graphics

NCL is developed by the Computational and Information Systems Lab at the National Center for Atmospheric Research (NCAR).

NCAR is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.

Important announcement on the future of NCL

NCAR has made the decision to adopt Python as the scripting language platform of choice for future development of analysis and visualization tools. Please read this open letter to NCL users to understand what kind of impact this will have on the future of NCL.

Installation

The current version of NCL is 6.6.2, which can be installed via conda.

conda create -n ncl_stable -c conda-forge ncl
source activate ncl_stable

Documentation and support

Visit the NCL website for documentation, examples, support, and installation.

NCL source code tree

The top level NCL source code tree contains the following directories and files:

Directory	Purpose
`common/`	Low-level library and fonts required by NCAR Graphics and NCL
`config/`	Configuration files for installation
`external/`	External libraries required by NCL
`install/`	Auxiliary files for installation
`ncarg2d/`	NCAR Graphics and GKS libraries and examples
`ncarview/`	NCGM-based applications and raster utilities
`ngmath/`	Interpolation libraries for 1D, 2D, and 3D data
`ni/`	NCL interpreter, HLU library, examples, color tables, GRIB2 code tables
Files	Purpose
`CODE_OF_CONDUCT.md`	Code of Conduct for NCL user community
`CONTRIBUTING.md`	How to contribute to the NCL Project
`Configure`	Configuration script for installation
`LICENSE`	Apache 2.0 License
`README.md`	Information about NCL
`version`	version file
`yMakefile`	Top level makefile

Bug reports and feature requests

Use the GitHub issue tracker to submit a bug or request a feature.

Citing NCL

Cite NCL using the following text:

<> The NCAR Command Language (Version 6.6.2) [Software]. (2019). Boulder, Colorado: UCAR/NCAR/CISL/TDD. http://dx.doi.org/10.5065/D6WD3XH5

Update the NCL version and year as appropriate.

Owner metadata

Name: NSF National Center for Atmospheric Research
Login: NCAR
Email:
Kind: organization
Description: NSF NCAR is sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research.
Website: http://ncar.ucar.edu
Location: Boulder, CO
Twitter:
Company:
Icon url: https://avatars.githubusercontent.com/u/2007542?v=4
Repositories: 934
Last ynced at: 2024-04-16T05:55:57.342Z
Profile URL: https://github.com/NCAR

GitHub Events

Total

Issues event: 3
Watch event: 10
Issue comment event: 18
Push event: 3
Pull request review event: 1
Pull request event: 4
Fork event: 4
Create event: 1

Last Year

Issues event: 3
Watch event: 10
Issue comment event: 18
Push event: 3
Pull request review event: 1
Pull request event: 4
Fork event: 4
Create event: 1

Committers metadata

Last synced: 7 days ago

Total Commits: 14,111
Total Committers: 43
Avg Commits per committer: 328.163
Development Distribution Score (DDS): 0.531

Commits in past year: 3
Committers in past year: 2
Avg Commits per committer in past year: 1.5
Development Distribution Score (DDS) in past year: 0.333

Name	Email	Commits
Mary Haley	h**y@u**u	6614
Dave Brown	d**n@u**u	1764
kennison	k****n	835
Dennis Shea	s**a@u**u	787
huangwei	h****i	712
fred	f****d	712
ethan	e****n	673
John Clyne	c**e@u**u	670
boote	b****e	395
Rick Brownrigg	b**g@u**u	185
grubin	g****n	175
don	d****n	130
erogluorhan	e**n@g**m	86
ncargd	n****d	80
stautler	s****r	64
Kevin Hallock	h**k@u**u	60
Bill Ladwig	l**g@u**u	47
Tim Scheitlin	s**n@u**u	35
ncldev	n****v	16
Adam Phillips	a**i@u**u	13
stevens	s****s	9
akash	a****h	6
Orion Poplawski	o**n@n**m	5
KMFleischer	m**r@d**e	4
adrianne	a****e	4
Katelyn FitzGerald	7****d	3
Dave Allured	d**d@n**v	3
bruyerec	b****c	3
Mary Haley	h**y@v**u	2
Mary Haley	h**y@v**u	2
and 13 more...

Committer domains:

Issue and Pull Request metadata

Last synced: 1 day ago

Total issues: 187
Total pull requests: 38
Average time to close issues: 3 months
Average time to close pull requests: 3 months
Total issue authors: 110
Total pull request authors: 13
Average comments per issue: 1.73
Average comments per pull request: 0.89
Merged pull request: 29
Bot issues: 0
Bot pull requests: 0

Past year issues: 11
Past year pull requests: 4
Past year average time to close issues: 6 days
Past year average time to close pull requests: about 20 hours
Past year issue authors: 9
Past year pull request authors: 4
Past year average comments per issue: 1.0
Past year average comments per pull request: 0.25
Past year merged pull request: 1
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/NCAR/ncl

Top Issue Authors

marylhaley (23)
edhartnett (11)
rbrownrigg (9)
khallock (8)
Dave-Allured (7)
valeriupredoi (5)
CathySmithNOAA (4)
hyoklee (3)
bladwig1 (3)
yang7ke (2)
MateebTalib (2)
afernandezody (2)
levinzx (2)
opoplawski (2)
Steve-Albers (2)

Top Pull Request Authors

edhartnett (11)
opoplawski (7)
erogluorhan (6)
zklaus (3)
kafitzgerald (2)
tenomoto (2)
marylhaley (1)
Dave-Allured (1)
KMFleischer (1)
muchojp (1)
Dandan336 (1)
rbrownrigg (1)
MicroTed (1)

Top Issue Labels

bug (3)
enhancement (3)
support (2)
invalid (1)

Top Pull Request Labels

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.github/workflows/ci_mamba.yml actions

actions/checkout v2 composite
mamba-org/provision-with-micromamba main composite
styfle/cancel-workflow-action 0.9.0 composite

Score: 9.765087182800102

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