First steps

Let's import and create a first model.

from hydrolib.core.io.structure.models import FlowDirection, StructureModel, Weir
from hydrolib.core.io.mdu.models import FMModel

fm = FMModel(filepath="test.mdu")

We can now add and/or manipulate features within the model.

# Start adding geometry
fm.geometry.netfile.network.mesh1d_add_branch()  # TODO fix example

Add some structures, note this is invalid because it doesn't have a branch or coordinates yet, but it will work for demo purposes

struc = Weir(allowedflowdir=FlowDirection.none, crestlevel=0.0)
struc.comments.crestlevel = "This is a comment"
fm.geometry.structurefile = [StructureModel(structure=[struc])]

Note that the creation of a Weir and other models always require the use of keyword arguments. A ValidationError will be raised when the model isn't correct or complete, for instance, in the case that StructureModel was assigned directly to structurefile instead of as a list.

Now let's add this model to a DIMR config and save it.

from hydrolib.core.io.dimr.models import DIMR, FMComponent
dimr = DIMR()
dimr.component.append(
    FMComponent(name="test", workingDir=".", inputfile=fm.filepath, model=fm)
)
dimr.save(folder=".")

The save on the top of the model hierarchy will result in saves of all child models, so this results in four files (dimrconfig.xml, network.nc, structures.ini,test.mdu) in the working directory.