pyPhenology

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Plant phenology models in python with a scikit-learn inspired API

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# pyPhenology  
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Plant phenology models in python with a scikit-learn inspired API

## Full documentation

[http://pyphenology.readthedocs.io/en/master/](http://pyphenology.readthedocs.io/en/master/)

## Installation
Requires: scipy, pandas, joblib, and numpy

Install via pip

```
pip install pyPhenology
```

Or install the latest version from Github

```
pip install git+git://github.com/sdtaylor/pyPhenology
```

## Usage

A Thermal Time growing degree day model:

```
from pyPhenology import models, utils
observations, predictors = utils.load_test_data(name='vaccinium')
model = models.ThermalTime()
model.fit(observations, predictors)
model.get_params()
{'t1': 85.704951490688927, 'T': 7.0814430573372666, 'F': 185.36866570243012}
```

Any of the parameters in a model can be set to a fixed value. For example the thermal time model with the threshold T set to 0 degrees C

```
model = models.ThermalTime(parameters={'T':0})
model.fit(observations, predictors)
model.get_params()
{'t1': 26.369813953905265, 'F': 333.76534368004388, 'T': 0}
```

## Citation

If you use this software in your research please cite it as:

Taylor, S. D. (2018). pyPhenology: A python framework for plant phenology modelling. Journal of Open Source Software, 3(28), 827. https://doi.org/10.21105/joss.00827

Bibtex:
```
@article{Taylor2018,
author = {Taylor, Shawn David},
doi = {10.21105/joss.00827},
journal = {Journal of Open Source Software},
mendeley-groups = {Software/Data},
month = {aug},
number = {28},
pages = {827},
title = {{pyPhenology: A python framework for plant phenology modelling}},
url = {http://joss.theoj.org/papers/10.21105/joss.00827},
volume = {3},
year = {2018}
}

```

## Acknowledgments

Development of this software was funded by
[the Gordon and Betty Moore Foundation's Data-Driven Discovery Initiative](http://www.moore.org/programs/science/data-driven-discovery) through
[Grant GBMF4563](http://www.moore.org/grants/list/GBMF4563) to Ethan P. White.

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