Grid refinement

Demonstrate two-dimensional model output interpolation onto grids with increasing spatial resolution. The leftmost panel shows the original data with a spatial resolution of 1 km, and other panels show interpolated results.

/home/docs/checkouts/readthedocs.org/user_builds/hyoga/envs/stable/lib/python3.12/site-packages/hyoga/open/example.py:29: FutureWarning: In a future version, xarray will not decode timedelta values based on the presence of a timedelta-like units attribute by default. Instead it will rely on the presence of a timedelta64 dtype attribute, which is now xarray's default way of encoding timedelta64 values. To continue decoding timedeltas based on the presence of a timedelta-like units attribute, users will need to explicitly opt-in by passing True or CFTimedeltaCoder(decode_via_units=True) to decode_timedelta. To silence this warning, set decode_timedelta to True, False, or a 'CFTimedeltaCoder' instance.
  return xr.open_dataset(path)

import matplotlib.pyplot as plt
import hyoga

# initialize figure
fig, axes = plt.subplots(ncols=4)
resolutions = [500, 200, 100]

# open 100m resolution topography for edits
with hyoga.open.example('pism.alps.vis.refined.nc') as ds:
    topo = ds.hyoga.getvar('bedrock_altitude')
    topo = topo.sel(x=slice(402e3, 427e3))

# open demo data
with hyoga.open.example('pism.alps.out.2d.nc') as ds:
    ds = ds.hyoga.assign_isostasy(hyoga.open.example('pism.alps.in.boot.nc'))

    # plot original data
    ax = axes[0]
    ds.hyoga.plot.bedrock_altitude(ax=ax, cmap='Topographic', center=False)
    ds.hyoga.plot.surface_altitude_contours(ax=ax)
    ds.hyoga.plot.ice_margin(ax=ax, facecolor='w')
    ax.set_title('original')

    # plot interpolated results
    for ax, res in zip(axes[1:], resolutions):
        stride = int(res/100)
        interp = ds.hyoga.interp(topo[::stride, ::stride])
        interp.hyoga.plot.bedrock_altitude(
            ax=ax, cmap='Topographic', center=False)
        interp.hyoga.plot.surface_altitude_contours(ax=ax)
        interp.hyoga.plot.ice_margin(ax=ax, facecolor='w')
        ax.set_title(f'{res} m')

    # constrain original data axes limits
    axes[0].set_xlim(axes[1].get_xlim())
    axes[0].set_ylim(axes[1].get_ylim())

# show
plt.show()