ncl
The NCAR Command Language (NCL) is a scripting language for the analysis and visualization of climate and weather data.
Science Score: 57.0%
This score indicates how likely this project is to be science-related based on various indicators:
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○CITATION.cff file
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✓codemeta.json file
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✓.zenodo.json file
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✓DOI references
Found 3 DOI reference(s) in README -
○Academic publication links
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✓Committers with academic emails
19 of 43 committers (44.2%) from academic institutions -
✓Institutional organization owner
Organization ncar has institutional domain (ncar.ucar.edu) -
○JOSS paper metadata
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○Scientific vocabulary similarity
Low similarity (15.6%) to scientific vocabulary
Keywords from Contributors
Repository
The NCAR Command Language (NCL) is a scripting language for the analysis and visualization of climate and weather data.
Basic Info
- Host: GitHub
- Owner: NCAR
- License: other
- Language: C
- Default Branch: develop
- Homepage: http://www.ncl.ucar.edu
- Size: 79 MB
Statistics
- Stars: 274
- Watchers: 35
- Forks: 73
- Open Issues: 136
- Releases: 0
Metadata Files
README.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 User Guide
- Extensive example suite
- Email list support
- Detailed download and installation instructions
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
- Name: NSF National Center for Atmospheric Research
- Login: NCAR
- Kind: organization
- Location: Boulder, CO
- Website: http://ncar.ucar.edu
- Repositories: 934
- Profile: https://github.com/NCAR
NSF NCAR is sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research.
GitHub Events
Total
- Issues event: 4
- Watch event: 12
- Delete event: 1
- Issue comment event: 19
- Push event: 4
- Pull request review event: 3
- Pull request event: 8
- Fork event: 6
- Create event: 4
Last Year
- Issues event: 4
- Watch event: 12
- Delete event: 1
- Issue comment event: 19
- Push event: 4
- Pull request review event: 3
- Pull request event: 8
- Fork event: 6
- Create event: 4
Committers
Last synced: 7 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Mary Haley | h****y@u****u | 6,614 |
| Dave Brown | d****n@u****u | 1,764 |
| 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 |
| Katelyn FitzGerald | 7****d | 8 |
| akash | a****h | 6 |
| Orion Poplawski | o****n@n****m | 5 |
| KMFleischer | m****r@d****e | 4 |
| adrianne | a****e | 4 |
| 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 (Top 20 + Academic)
Issues and Pull Requests
Last synced: 6 months ago
All Time
- Total issues: 186
- Total pull requests: 44
- Average time to close issues: 3 months
- Average time to close pull requests: 3 months
- Total issue authors: 111
- Total pull request authors: 14
- Average comments per issue: 1.74
- Average comments per pull request: 0.77
- Merged pull requests: 32
- Bot issues: 0
- Bot pull requests: 2
Past Year
- Issues: 5
- Pull requests: 9
- Average time to close issues: N/A
- Average time to close pull requests: 4 days
- Issue authors: 5
- Pull request authors: 4
- Average comments per issue: 0.6
- Average comments per pull request: 0.0
- Merged pull requests: 4
- Bot issues: 0
- Bot pull requests: 2
Top Authors
Issue Authors
- marylhaley (23)
- edhartnett (11)
- rbrownrigg (9)
- khallock (8)
- Dave-Allured (7)
- CathySmithNOAA (4)
- valeriupredoi (4)
- hyoklee (3)
- bladwig1 (3)
- Geek-007 (2)
- MateebTalib (2)
- yang7ke (2)
- kafitzgerald (2)
- afernandezody (2)
- Steve-Albers (2)
Pull Request Authors
- edhartnett (11)
- opoplawski (9)
- erogluorhan (6)
- kafitzgerald (5)
- zklaus (3)
- Dandan336 (2)
- dependabot[bot] (2)
- tenomoto (2)
- marylhaley (1)
- Dave-Allured (1)
- KMFleischer (1)
- muchojp (1)
- rbrownrigg (1)
- MicroTed (1)
Top Labels
Issue Labels
Pull Request Labels
Dependencies
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- conda-incubator/setup-miniconda v2 composite
- styfle/cancel-workflow-action 0.9.0 composite
- actions/checkout v2 composite
- mamba-org/provision-with-micromamba main composite
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