{"id":40808999,"url":"https://github.com/predsci/chmap","last_synced_at":"2026-01-21T21:13:07.542Z","repository":{"id":48131764,"uuid":"199544822","full_name":"predsci/CHMAP","owner":"predsci","description":"A python package focused on the detection, mapping, tracking, and general analysis of coronal holes in the solar corona.","archived":false,"fork":false,"pushed_at":"2025-06-27T19:22:13.000Z","size":81727,"stargazers_count":11,"open_issues_count":0,"forks_count":4,"subscribers_count":5,"default_branch":"master","last_synced_at":"2025-09-05T15:59:43.185Z","etag":null,"topics":["analysis","python","sun"],"latest_commit_sha":null,"homepage":"https://predsci.github.io/CHMAP/","language":"Jupyter Notebook","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/predsci.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":"CITATION.cff","codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2019-07-30T00:25:56.000Z","updated_at":"2025-06-27T19:22:16.000Z","dependencies_parsed_at":"2025-06-20T23:36:12.412Z","dependency_job_id":null,"html_url":"https://github.com/predsci/CHMAP","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/predsci/CHMAP","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/predsci%2FCHMAP","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/predsci%2FCHMAP/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/predsci%2FCHMAP/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/predsci%2FCHMAP/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/predsci","download_url":"https://codeload.github.com/predsci/CHMAP/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/predsci%2FCHMAP/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28643121,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-21T18:04:35.752Z","status":"ssl_error","status_checked_at":"2026-01-21T18:03:55.054Z","response_time":86,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["analysis","python","sun"],"created_at":"2026-01-21T21:13:07.282Z","updated_at":"2026-01-21T21:13:07.530Z","avatar_url":"https://github.com/predsci.png","language":"Jupyter Notebook","funding_links":[],"categories":[],"sub_categories":[],"readme":"# CHMAP: Coronal Hole Mapping and Analysis Pipeline\n\nCHMAP is a python package focused on the detection, mapping, tracking, and\ngeneral analysis of coronal holes in the solar corona.\n\nCHMAP includes methods for:\n\n- Data Acquisition\n- Data Reduction\n- Limb Brightening Correction\n- Inter-Instrument Scaling\n- Flexible Map Creation\n- Coronal Hole Detection\n- Coronal Hole Tracking\n\nAlthough CHMAP was designed for analyzing coronal hole evolution from seconds to\nyears, many of the database, image processing, and mapping procedures are\nrelevant a broad range of solar features and scientific analysis.\n\n## Requirements\n\nThis package requires a custom python environment that includes Sunpy.  \nAt time of writing the version of Sunpy (3.1.6) available from the \nconda-defaults channel is fatally flawed.  So be sure that the conda-forge \nchannel is added to your conda preferences before using the enclosed \nconda recipe file.  Check for conda-forge:\n```\nconda config --show channels\n```\nIf needed, add conda-forge:\n```\nconda config --append channels conda-forge\n```\nNow we are ready to build the custom 'chmap' conda environment:\n```\nconda env create --file conda_recipe_chmap.yml\n```\n\nRaw data reduction steps may also\nrequire [SSW/IDL](https://www.lmsal.com/solarsoft/) (for STEREO/EUVI) and\na [GPU deconvolution algorithm](https://on-demand-gtc.gputechconf.com/gtcnew/sessionview.php?sessionName=s5209-gpu-accelerated+imaging+processing+for+nasa%27s+solar+dynamics+observatory).\n\n## Database\n\nCHMAP uses database methods (SQLite, MySQL) to facilitate flexible interaction\nwith solar imaging data and their byproducts (maps, time-series, etc).\n\nCreate your own database using CHMAP or use\nour [example database](http://www.predsci.com/chmap/example_db/CHMAP_DB_example.zip),\nwhich includes sample data and 14+ years of data-derived image correction\ncoefficients (5.7GB).\n\nAdditionally, we have processed EUV and coronal hole maps every 2 hours for 2008-2020. \nThese can be viewed using the [CHMAP Database Browser](https://q.predsci.com/CHMAP-map-browser/).\n\n## Documentation and Examples\n\nPipeline documentation and examples can be found\nhere: [predsci.github.io/CHMAP](https://predsci.github.io/CHMAP/).\n\n## Acknowledgements\n\nCopyright 2021 Predictive Science Incorporated (Apache 2.0 License).\n\nA research paper describing the initial release of CHMAP and some applications\nis currently in preparation. In the meantime, if you use CHMAP code or concepts\nin your own work, please refer to our prior work on this topic \n([Caplan et al., 2016](http://adsabs.harvard.edu/abs/2016ApJ...823...53C)) and cite\nthe corresponding Zenodo release for CHMAP: [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.5039439.svg)](https://doi.org/10.5281/zenodo.5039439).\n\nThe development of CHMAP was primarily supported by the NASA Heliophysics Guest\nInvestigators program (grant NNX17AB78G). Additional support is from the\nHeliophysics Supporting Research program (grants 80NSSC18K0101 \u0026 80NSSC18K1129).\n\n## Contact\n\nCooper Downs ([cdowns@predsci.com](mailto:cdowns@predsci.com))\n\n## Contributors\n\n- Cooper Downs\n- James Turtle\n- Tamar Ervin\n- Opal Issan\n- Ronald M. Caplan\n- Jon A. Linker\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpredsci%2Fchmap","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpredsci%2Fchmap","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpredsci%2Fchmap/lists"}