Optional dependencies

Dependencies for optional features are listed below. These may be installed with pip install flopy[optional].

Method	Python Package
`.plot_shapefile()`	Pyshp >= 2.0.0
`.to_shapefile()`	Pyshp >= 2.0.0
`.export(*.shp)`	Pyshp >= 2.0.0
`.export(*.nc)`	netcdf4 >= 1.1, and python-dateutil >= 2.4.0
`.export(*.tif)`	rasterio
`.export_array(*.asc)` in `flopy.export.utils`	scipy.ndimage
`.resample_to_grid()` in `flopy.utils.rasters`	scipy.interpolate
`.interpolate()` in `flopy.mf6.utils.reference` `StructuredSpatialReference` class	scipy.interpolate
`.get_authority_crs()` in `flopy.utils.crs`	pyproj >= 2.2.0
`.generate_classes()` in `flopy.mf6.utils`	modflow-devtools
`GridIntersect()` in `flopy.utils.gridintersect`	shapely
`GridIntersect().plot_polygon()` in `flopy.utils.gridintersect`	shapely and descartes
`Raster()` in `flopy.utils.Raster`	rasterio, rasterstats, affine, and scipy
`Raster().sample_polygon()` in `flopy.utils.Raster`	shapely
`Raster().crop()` in `flopy.utils.Raster`	shapely
`.array_at_verts()` in `flopy.discretization.structuredgrid` `StructuredGrid` class	scipy.interpolate
`get_sciencebase_xml_metadata()` in `flopy.export.metadata` `acdd` class	defusedxml
`flopy.utils.geospatial_utils` `GeoSpatialUtil` class	geojson
`flopy.utils.geospatial_utils` `GeoSpatialCollection` class	geojson
`flopy.export.vtk` `Vtk` class	vtk, optionally pyvista