Source code for imod.mf6.model

import collections
import os
import pathlib

import cftime
import jinja2
import numpy as np
import xarray as xr

import imod


class Model(collections.UserDict):
    def __setitem__(self, key, value):
        # TODO: Add packagecheck
        super(__class__, self).__setitem__(key, value)

    def update(self, *args, **kwargs):
        for k, v in dict(*args, **kwargs).items():
            self[k] = v


[docs]class GroundwaterFlowModel(Model): """ Contains data and writes consistent model input files """ _pkg_id = "model" def _initialize_template(self): loader = jinja2.PackageLoader("imod", "templates/mf6") env = jinja2.Environment(loader=loader) self._template = env.get_template("gwf-nam.j2") def __init__(self, newton=False, under_relaxation=False): super(__class__, self).__init__() self.newton = newton self.under_relaxation = under_relaxation self._initialize_template() def _get_pkgkey(self, pkg_id): """ Get package key that belongs to a certain pkg_id, since the keys are user specified. """ key = [pkgname for pkgname, pkg in self.items() if pkg._pkg_id == pkg_id] nkey = len(key) if nkey > 1: raise ValueError(f"Multiple instances of {key} detected") elif nkey == 1: return key[0] else: return None def _use_cftime(self): """ Also checks if datetime types are homogeneous across packages. """ types = [ type(pkg["time"].values[0]) for pkg in self.values() if "time" in pkg.coords ] # Types will be empty if there's no time dependent input if len(set(types)) == 0: return False else: # there is time dependent input if not len(set(types)) == 1: raise ValueError( "Multiple datetime types detected. " "Use either cftime or numpy.datetime64[ns]." ) # Since we compare types and not instances, we use issubclass if issubclass(types[0], cftime.datetime): return True elif issubclass(types[0], np.datetime64): return False else: raise ValueError("Use either cftime or numpy.datetime64[ns].") def _yield_times(self): modeltimes = [] for pkg in self.values(): if "time" in pkg.coords: modeltimes.append(pkg["times"].values) return modeltimes
[docs] def render(self, modeldirectory): """Render model namefile""" d = {"newton": self.newton, "under_relaxation": self.under_relaxation} packages = [] for pkgname, pkg in self.items(): # Add the six to the package id pkg_id = pkg._pkg_id key = f"{pkg_id}6" path = modeldirectory / f"{pkgname}.{pkg_id}" packages.append((key, path.as_posix())) d["packages"] = packages return self._template.render(d)
[docs] def write(self, modelname, globaltimes): """ Write model namefile Write packages """ modeldirectory = pathlib.Path(modelname) modeldirectory.mkdir(exist_ok=True, parents=True) # write model namefile namefile_content = self.render(modeldirectory) namefile_path = modeldirectory / f"{modelname}.nam" with open(namefile_path, "w") as f: f.write(namefile_content) # write package contents for pkgname, pkg in self.items(): pkg.write(modeldirectory, pkgname, globaltimes)