Error in creating MNW2 object

[kimlee100]

Hello,

I rewriting MNW2 package by modifying some wells. Following the MNW2 example, I converted to numpy array both node_data and stress_period_data, however when I try to create MNW2 object it is giving an error that node_data has no dtype. Checked data types and they are quite similar to the ones in the example. Can you suggest why it is not creating an object?

Error message

----> 1 mnw2modif = flopy.modflow.ModflowMnw2(model=mnwmodif, node_data=node_data, stress_period_data=stress_period_data)

C:\ProgramData\Anaconda3\lib\site-packages\flopy\modflow\mfmnw2.py in init(self, model, mnwmax, nodtot, ipakcb, mnwprnt, aux, node_data, mnw, stress_period_data, itmp, extension, unitnumber, filenames, gwt)
1060 names = [
1061 n
-> 1062 for n in node_data.dtype.names
1063 if n in self.node_data.dtype.names
1064 ]

C:\ProgramData\Anaconda3\lib\site-packages\pandas\core\generic.py in getattr(self, name)
5463 if self._info_axis._can_hold_identifiers_and_holds_name(name):
5464 return self[name]
-> 5465 return object.getattribute(self, name)
5466
5467 def setattr(self, name: str, value) -> None:

AttributeError: 'DataFrame' object has no attribute 'dtype'

[p-ortega]

You have to convert the node data to a recarray. From the error node_data is a dataframe so do the following:

node_data = node_data.to_records()