snvecR

Calculate Earth’s Obliquity and Precession in the Past

CRAN Package

Easily calculate precession and obliquity from an orbital solution (defaults to ZB18a from Zeebe and Lourens (2019) doi:10.1126/science.aax0612) and assumed or reconstructed values for tidal dissipation (Td) and dynamical ellipticity (Ed). This is a translation and adaptation of the 'C'-code in the supplementary material to Zeebe and Lourens (2022) doi:10.1029/2021PA004349, with further details on the methodology described in Zeebe (2022) doi:10.3847/1538-3881/ac80f8. The name of the 'C'-routine is 'snvec', which refers to the key units of computation: spin vector s and orbit normal vector n.


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Insights

Last 30 days

This package has been downloaded 367 times in the last 30 days. Enough downloads to make a small wave in the niche community. The curiosity is spreading! The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 10 times.

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0 downloadsMar 2, 2025
9 downloadsMar 3, 2025
42 downloadsMar 4, 2025
30 downloadsMar 5, 2025
13 downloadsMar 6, 2025
13 downloadsMar 7, 2025
41 downloadsMar 8, 2025
3 downloadsMar 9, 2025
4 downloadsMar 10, 2025
9 downloadsMar 11, 2025
15 downloadsMar 12, 2025
32 downloadsMar 13, 2025
5 downloadsMar 14, 2025
28 downloadsMar 15, 2025
6 downloadsMar 16, 2025
8 downloadsMar 17, 2025
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2 downloadsMar 19, 2025
8 downloadsMar 20, 2025
13 downloadsMar 21, 2025
6 downloadsMar 22, 2025
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7 downloadsMar 24, 2025
4 downloadsMar 25, 2025
4 downloadsMar 26, 2025
10 downloadsMar 27, 2025
22 downloadsMar 28, 2025
1 downloadsMar 29, 2025
4 downloadsMar 30, 2025
3 downloadsMar 31, 2025
10 downloadsApr 1, 2025
0 downloadsApr 2, 2025
0 downloadsApr 3, 2025
0 downloadsApr 4, 2025
0 downloadsApr 5, 2025
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42

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 6,567 times in the last 365 days. A solid achievement! Enough downloads to get noticed at department meetings. The day with the most downloads was Jul 21, 2024 with 137 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


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Dependencies

  • Imports10 packages
  • Suggests9 packages