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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.11461 |
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| _version_ | 1866915024566484992 |
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| author | Mingione, Marco Lagona, Francesco Nagar, Priyanka von Holtzhausen, Francois Bekker, Andriette Schoombie, Janine Roux, Peter C. le |
| author_facet | Mingione, Marco Lagona, Francesco Nagar, Priyanka von Holtzhausen, Francois Bekker, Andriette Schoombie, Janine Roux, Peter C. le |
| contents | Motivated by a case study of vegetation patterns, we introduce a mixture model with concomitant variables to examine the association between the orientation of vegetation stripes and wind direction. The proposal relies on a novel copula-based bivariate distribution for mixed axial and circular observations and provides a parsimonious and computationally tractable approach to examine the dependence of two environmental variables observed in a complex manifold. The findings suggest that dominant winds shape the orientation of vegetation stripes through a mechanism of neighbouring plants providing wind shelter to downwind individuals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_11461 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Does wind affect the orientation of vegetation stripes? A copula-based mixture model for axial and circular data Mingione, Marco Lagona, Francesco Nagar, Priyanka von Holtzhausen, Francois Bekker, Andriette Schoombie, Janine Roux, Peter C. le Applications Motivated by a case study of vegetation patterns, we introduce a mixture model with concomitant variables to examine the association between the orientation of vegetation stripes and wind direction. The proposal relies on a novel copula-based bivariate distribution for mixed axial and circular observations and provides a parsimonious and computationally tractable approach to examine the dependence of two environmental variables observed in a complex manifold. The findings suggest that dominant winds shape the orientation of vegetation stripes through a mechanism of neighbouring plants providing wind shelter to downwind individuals. |
| title | Does wind affect the orientation of vegetation stripes? A copula-based mixture model for axial and circular data |
| topic | Applications |
| url | https://arxiv.org/abs/2411.11461 |