ZIPNSIDC坐标转换软件 96.03KB

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资源文件列表:

polarstereo-lonlat-convert-py-main.zip 大约有22个文件
  1. polarstereo-lonlat-convert-py-main/
  2. polarstereo-lonlat-convert-py-main/.flake8 294B
  3. polarstereo-lonlat-convert-py-main/.gitignore 21B
  4. polarstereo-lonlat-convert-py-main/CHANGELOG.md 29B
  5. polarstereo-lonlat-convert-py-main/CODE_OF_CONDUCT.md 3.27KB
  6. polarstereo-lonlat-convert-py-main/DEVELOPMENT.md 321B
  7. polarstereo-lonlat-convert-py-main/LICENSE 1.03KB
  8. polarstereo-lonlat-convert-py-main/README.md 4.44KB
  9. polarstereo-lonlat-convert-py-main/environment.yml 138B
  10. polarstereo-lonlat-convert-py-main/images/
  11. polarstereo-lonlat-convert-py-main/images/NSIDC_DAAC_2018_sm.jpg 28.31KB
  12. polarstereo-lonlat-convert-py-main/images/NSIDC_DAAC_2018_smv2.jpg 11.41KB
  13. polarstereo-lonlat-convert-py-main/images/NSIDC_logo_2018_poster-1.png 45.18KB
  14. polarstereo-lonlat-convert-py-main/polar_convert/
  15. polarstereo-lonlat-convert-py-main/polar_convert/__init__.py 154B
  16. polarstereo-lonlat-convert-py-main/polar_convert/constants.py 281B
  17. polarstereo-lonlat-convert-py-main/polar_convert/polar_convert.py 7.77KB
  18. polarstereo-lonlat-convert-py-main/polar_convert/test.py 1.95KB
  19. polarstereo-lonlat-convert-py-main/polar_convert/validators.py 588B
  20. polarstereo-lonlat-convert-py-main/pyproject.toml 89B
  21. polarstereo-lonlat-convert-py-main/run_tests.sh 87B
  22. polarstereo-lonlat-convert-py-main/setup.py 453B

资源介绍:

NSIDC坐标转换软件
![NSIDC logo](/images/NSIDC_logo_2018_poster-1.png) # NSIDC Polar Stereographic Projection lon/lat conversion: polar_convert Python functions for converting polar stereographic coordinates. This repository contains conversion functions between longitude/latitude and generic x, y (km) coordinates. There are also conversion functions between longitude/latitude and i, j grid coordinates for specific datasets for AMSR-E and SSM/I. ## Level of Support <b>This repository is fully supported by NSIDC.</b> If you discover any problems or bugs, please submit an Issue. If you would like to contribute to this repository, you may fork the repository and submit a pull request. See the [LICENSE](LICENSE) for details on permissions and warranties. Please contact nsidc@nsidc.org for more information. ## Requirements * Python 3.6 or higher (tested with 3.6.7 and 3.9.7) * [`numpy`](https://numpy.org/) (python library) These requirements are also included in the provided `environment.yml` file, which can be used with [conda](https://docs.conda.io/en/latest/) to install the requirements into a `conda` environment. ## Installation To install `polarstereo-lonlat-convert-py`, clone this repo and then run: ``` pip install --editable /path/to/cloned/polarstereo-lonlat-convert-py ``` This will install the `polar_convert` package in an 'editable' development mode, allowing you to make changes to the source code in `/path/to/cloned/polarstereo-lonlat-convert-py`. See [pip's documentation](https://pip.pypa.io/en/stable/cli/pip_install/#install-editable) for more information. ## Usage See the docstrings for individual functions in [`polar_convert.py`](./polar_convert/polar_convert.py) for details. The functions defined in this file can be used in your own projects. ### `polar_lonlat_to_xy` Convert from geodetic longitude and latitude to Polar Stereographic (X, Y) coordinates in km. Functional equivilient of [`mapll.for`](https://github.com/nsidc/polarstereo-latlon-convert-fortran/blob/main/locate/mapll.for). ``` >>> from polar_convert.constants import NORTH >>> from polar_convert import polar_lonlat_to_xy >>> longitude = 20 # longitude in degrees >>> latitude = 80 # latitude in degrees >>> true_scale_lat = 70 # true-scale latitude in degrees >>> re = 6378.137 # earth radius in km >>> e = 0.01671 # earth eccentricity >>> hemisphere = NORTH >>> polar_lonlat_to_xy(longitude, latitude, true_scale_lat, re, e, hemisphere) [370.2450347527368, -1017.2398726483362] ``` ### `polar_xy_to_lonlat` Convert from Polar Stereographic (x, y) coordinates to geodetic longitude and latitude. Functional equivilent of [`mapxy.for`](https://github.com/nsidc/polarstereo-latlon-convert-fortran/blob/main/locate/mapxy.for). ``` >>> from polar_convert.constants import NORTH >>> from polar_convert import polar_xy_to_lonlat >>> x = 370.25 # x coordinate in km >>> y = -1017.24 # y coordinate in km >>> true_scale_lat = 70 # true-scale latitude in degrees >>> re = 6378.137 # earth radius in km >>> e = 0.01671 # earth eccentricity >>> hemisphere = NORTH >>> polar_xy_to_lonlat(x, y, true_scale_lat, re, e, hemisphere) [20.000244645773623, 79.99998329186566] ``` ### `polar_lonlat_to_ij` Convert from longitude and latitude to NSIDC Polar Stereographic I, J (grid) coordinates. ``` >>> from polar_convert.constants import NORTH >>> from polar_convert import polar_lonlat_to_ij >>> longitude = 45 # longitude in degrees >>> latitude = 85 # latitude in degrees >>> grid_size = 6.25 # in km >>> hemisphere = NORTH >>> polar_lonlat_to_ij(longitude, latitude, grid, hemisphere) [703, 936] ``` ### `polar_ij_to_lonlat` Convert from NSIDC Polar Stereographic I, J (grid) coordinates to longitude and latitude. ``` >>> from polar_convert.constants import NORTH >>> from polar_convert import polar_ij_to_lonlat >>> i = 10 # `i` is an int representing the x grid coordinate >>> j = 200 # `j` is an int representing y grid coordinate >>> grid_size = 12.5 # in km >>> hemisphere = NORTH >>> polar_ij_to_lonlat(i, j, grid, hemisphere) [183.02869857834057, 45.89915728375587] ``` ## Development See [DEVELOPMENT.md](./DEVELOPMENT.md) for information on how to contribute to this python code. ## License See [LICENSE](LICENSE), unless otherwise stated in the README file with each subdirectory. ## Code of Conduct See [Code of Conduct](CODE_OF_CONDUCT.md). ## Credit This software was developed by the NASA National Snow and Ice Data Center Distributed Active Archive Center. Author: Chris Torrence, September 2019
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