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189 lines
4.6 KiB
189 lines
4.6 KiB
3 years ago
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[](https://www.repostatus.org/#active)
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[](https://keybase.io/hrbrmstr)
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[](https://travis-ci.org/hrbrmstr/daybreak)
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# daybreak
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Compute Sun Rise/Set Times, Start/End of Twilight, and the Length of the
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Day at Any Date and Latitude
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## Description
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A wrapper for Paul Schlyter’s C-based library for computing sunrise,
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sunset, twilight start and end, plus the length of day for a given data
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and coordinates.
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## What’s Inside The Tin
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The following functions are implemented:
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- `astronomical_twilight`: Astronomical twilight
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- `civil_twilight`: Civil twilight
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- `day_astronomical_twilight_length`: Length of astronomical twilight
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- `day_civil_twilight_length`: Length of civil twilight
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- `day_length`: Length of day
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- `day_nautical_twilight_length`: Length of nautical twilight
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- `nautical_twilight`: Nautical twilight
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- `sun_rise_set`: Sun rise/set times
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## Installation
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``` r
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remotes::install_git("https://git.rud.is/hrbrmstr/daybreak.git")
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# or
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remotes::install_git("https://git.sr.ht/~hrbrmstr/daybreak")
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# or
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remotes::install_gitlab("hrbrmstr/daybreak")
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# or
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remotes::install_bitbucket("hrbrmstr/daybreak")
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```
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NOTE: To use the ‘remotes’ install options you will need to have the
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[{remotes} package](https://github.com/r-lib/remotes) installed.
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## Usage
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``` r
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library(daybreak)
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# current version
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packageVersion("daybreak")
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## [1] '0.1.0'
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```
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Near me:
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``` r
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day_length("2019-12-31", -70.8636, 43.2683)
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## [1] 9.031444
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day_civil_twilight_length("2019-12-31", -70.8636, 43.2683)
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## [1] 10.10834
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day_nautical_twilight_length("2019-12-31", -70.8636, 43.2683)
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## [1] 11.30569
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day_astronomical_twilight_length("2019-12-31", -70.8636, 43.2683)
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## [1] 12.45998
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sun_rise_set("2019-12-31", -70.8636, 43.2683)
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## $rise
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## [1] 12.25761
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##
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## $set
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## [1] 21.28906
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civil_twilight("2019-12-31", -70.8636, 43.2683)
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## $start
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## [1] 11.71917
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##
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## $end
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## [1] 21.82751
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nautical_twilight("2019-12-31", -70.8636, 43.2683)
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## $start
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## [1] 11.12049
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##
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## $end
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## [1] 22.42618
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astronomical_twilight("2019-12-31", -70.8636, 43.2683)
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## $start
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## [1] 10.54335
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##
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## $end
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## [1] 23.00332
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```
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Tromsø, Norway (Winter)
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``` r
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day_length("2019-12-31", 18.9553, 69.6492)
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## [1] 0
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day_civil_twilight_length("2019-12-31", 18.9553, 69.6492)
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## [1] 4.613116
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day_nautical_twilight_length("2019-12-31", 18.9553, 69.6492)
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## [1] 8.000323
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day_astronomical_twilight_length("2019-12-31", 18.9553, 69.6492)
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## [1] 10.5871
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sun_rise_set("2019-12-31", 18.9553, 69.6492)
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## $rise
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## [1] NA
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##
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## $set
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## [1] NA
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civil_twilight("2019-12-31", 18.9553, 69.6492)
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## $start
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## [1] 8.476866
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##
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## $end
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## [1] 13.08998
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nautical_twilight("2019-12-31", 18.9553, 69.6492)
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## $start
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## [1] 6.783262
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##
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## $end
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## [1] 14.78359
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astronomical_twilight("2019-12-31", 18.9553, 69.6492)
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## $start
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## [1] 5.489872
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##
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## $end
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## [1] 16.07698
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```
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Tromsø, Norway (Summer)
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``` r
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day_length("2019-06-01", 18.9553, 69.6492)
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## [1] 24
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day_civil_twilight_length("2019-06-01", 18.9553, 69.6492)
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## [1] 24
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day_nautical_twilight_length("2019-06-01", 18.9553, 69.6492)
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## [1] 24
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day_astronomical_twilight_length("2019-06-01", 18.9553, 69.6492)
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## [1] 24
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sun_rise_set("2019-06-01", 18.9553, 69.6492)
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## $rise
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## [1] NA
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##
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## $set
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## [1] NA
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civil_twilight("2019-06-01", 18.9553, 69.6492)
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## $start
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## [1] NA
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##
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## $end
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## [1] NA
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nautical_twilight("2019-06-01", 18.9553, 69.6492)
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## $start
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## [1] NA
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##
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## $end
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## [1] NA
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astronomical_twilight("2019-06-01", 18.9553, 69.6492)
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## $start
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## [1] NA
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##
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## $end
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## [1] NA
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```
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## daybreak Metrics
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| Lang | \# Files | (%) | LoC | (%) | Blank lines | (%) | \# Lines | (%) |
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| :----------- | -------: | ---: | --: | ---: | ----------: | ---: | -------: | ---: |
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| C | 3 | 0.33 | 267 | 0.66 | 110 | 0.60 | 245 | 0.60 |
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| R | 4 | 0.44 | 65 | 0.16 | 16 | 0.09 | 84 | 0.20 |
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| C/C++ Header | 1 | 0.11 | 39 | 0.10 | 35 | 0.19 | 44 | 0.11 |
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| Rmd | 1 | 0.11 | 32 | 0.08 | 21 | 0.12 | 37 | 0.09 |
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## Code of Conduct
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Please note that this project is released with a Contributor Code of
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Conduct. By participating in this project you agree to abide by its
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terms.
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