Fetches, processes, and models groundwater levels for the High Plains (Ogalalla) region of the US.

calc_polynomial_trend_surface | fit a higher-order GLM to our spatial data and a field of... |

calc_saturated_thickness | calculate saturated thickness for a series of well points and... |

downsample_aquifer_boundary | downsample well points that occur along the aquifer boundary |

feet_to_meters | hidden function for feet-> meters |

generate_aquifer_boundary_buffer | generate a uniform buffer region around the HP aquifer... |

generate_base_elevation_raster | using ofr98-393, make a contour line to raster product. The... |

generate_pseudo_zeros | download the ofr99-266 dry areas dataset and randomly... |

generate_target_raster_grid | generate a universal grid at the target resolution (500m)... |

generate_zero_burnin_surface | Do a burn-in of an input raster and the ofr99-266 dry areas... |

grep_by | subset by grep match |

idw_interpolator | hidden shortcut for gstat's idw interpolator |

knn_point_smoother | use a KNN classifier fit to lat/lon to select a neighborhood... |

meters_to_feet | hidden function for meters -> feet |

min_max_normalize | normalize a vector X so that it's values occur on a 0-to-1... |

m_knn_weights | testing for a spatially-weighted GLM that attempts to... |

m_spatial_trend | testing for a standard GLM with polynomial terms on latitude... |

parse_hrefs | grab all zips by default and parse through what the user... |

parse_url | hidden function that grabs the full strings within a set of... |

plotResiduals | plot the z-standardized residual error for a model run |

quantile_normalize | normalize a vector x to quantiles. By default (if no... |

scrapeBaseElevation | scrape aquifer base elevation data |

scrapeHighPlainsAquiferBoundary | webscrape functionality for the hp aquifer boundary contour... |

scrapeNed | scrape the national elevation dataset (using FedData) to... |

scrapeUnsampledZeroValues | scrape polygon features for areas reported to contain... |

scrapeWellPointData | scrape well-point water data from the USGS portal |

split_training_testing_datasets | split an input dataset into training/testing using a... |

unpackBaseElevation | unpack base elevation data |

unpackHighPlainsAquiferBoundary | unpack aquifer boundary data from a zipped ESRI shapefile, as... |

unpackUnsampledZeroValues | unpack a ofr99-266 vector dataset |

unpackWellPointData | hidden function that unpacks and processes well point data,... |

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