How do I select the data at a certain coordinate value (i.e. x=0.0, f=200e12)?

Date	Category
2023-12-19 14:35:56	Data Visualization and Postprocessing

The simulation data is stored as a DataArray object using the xarray package. You can think of it as a dataset where data is stored as a large multi-dimensional array (like a numpy array) and the coordinates along each of the dimensions are specified, so it is easy to work with.

You can use the sel() method to select data at certain coordinates. For example:

# Run the simulation and get the data.
sim_data = tidy3d.web.run(simulation, task_name="task", path="data/data.hdf5", verbose=True)

# Get all the data from a field monitor.
field_data = sim_data["field"]

# Get field data for a specific frequency.
field_freq = field_data.sel(f=200e14)

# Get field data for a specific position and frequency.
field_pos_freq = field_data.sel(z=0, f=200e14)

You can find detailed information about simulation data visualization and postprocessing in this tutorial.