easyclimate.plot.icon.common

Shared ICON plotting helpers.

Functions

_rad2deg(x)	Convert radians to degrees.
_lon_wrap_to_center(lon, center_lon)	Wrap longitude to [center_lon - 180, center_lon + 180).
_normalize_lon_window(lon_min, lon_max)	Normalize a longitude window into a continuous increasing interval.
_infer_center_lon([lon_min, lon_max, lon_cell, valid])	Infer longitude wrapping center.
_infer_extent_from_points(lon, lat[, margin])	Infer extent from valid lon/lat points.
_is_cartopy_axis(ax)	Weak check for Cartopy GeoAxes.
_set_cartopy_extent(ax, lon_min, lon_max, lat_min, lat_max)	Set Cartopy extent for continuous longitude windows.
_infer_default_cmap(values[, cmap, sequential, diverging])	Infer a default colormap similar to xarray.plot.
_read_cell_data(da)	Read one-dimensional ICON cell data and metadata.
_prepare_cell_geometry(ds, da, *[, lon_min, lon_max, ...])	Prepare wrapped ICON cell centers and extent metadata.
_resolve_contour_levels(values, levels, *[, vmin, ...])	Resolve contour levels, color limits, and extension mode.
_mask_bad_triangles(triang, x, y[, max_edge])	Mask triangles with too-long edges.
_get_cached_triangulation(x, y, *[, max_edge, ...])	Build or reuse a triangulation for ICON cell-center contouring.
_read_cell_vectors(u_da, v_da)	Read one-dimensional ICON cell vector components.
_prepare_vector_points(ds, u_da, v_da, *, lon_min, ...)	Read, wrap, and subset ICON cell vectors for an explicit plot window.
thin_vectors_by_bins(x, y, u, v, *, lon_min, lon_max, ...)	Thin vectors by lon-lat bins.
_interpolate_vectors_to_grid(x, y, u, v, *, lon_min, ...)	Interpolate irregular ICON cell vectors onto a regular lon-lat grid.

Module Contents

easyclimate.plot.icon.common._rad2deg(x)

Convert radians to degrees.

easyclimate.plot.icon.common._lon_wrap_to_center(lon, center_lon)

Wrap longitude to [center_lon - 180, center_lon + 180).

easyclimate.plot.icon.common._normalize_lon_window(lon_min, lon_max)

Normalize a longitude window into a continuous increasing interval.

easyclimate.plot.icon.common._infer_center_lon(lon_min=None, lon_max=None, lon_cell=None, valid=None)

Infer longitude wrapping center.

easyclimate.plot.icon.common._infer_extent_from_points(lon, lat, margin=0.05)

Infer extent from valid lon/lat points.

easyclimate.plot.icon.common._is_cartopy_axis(ax)

Weak check for Cartopy GeoAxes.

easyclimate.plot.icon.common._set_cartopy_extent(ax, lon_min, lon_max, lat_min, lat_max)

Set Cartopy extent for continuous longitude windows.

GeoAxes.set_extent can expand windows such as 110E to 220E to a global extent on shifted PlateCarree axes. For PlateCarree projections, convert the geographic longitudes into the target projection’s native x coordinate and set the extent in that coordinate system.

easyclimate.plot.icon.common._infer_default_cmap(values, cmap=None, sequential='viridis', diverging='RdBu_r')

Infer a default colormap similar to xarray.plot.

easyclimate.plot.icon.common._read_cell_data(da)

Read one-dimensional ICON cell data and metadata.

easyclimate.plot.icon.common._prepare_cell_geometry(ds, da, *, lon_min=None, lon_max=None, lat_min=None, lat_max=None, auto_extent=True, extent_margin=0.05, global_plot=False, center_lon=None, input_radians=True, lon_name_cell='clon', lat_name_cell='clat')

Prepare wrapped ICON cell centers and extent metadata.

easyclimate.plot.icon.common._resolve_contour_levels(values, levels, *, vmin=None, vmax=None, symmetric=False, percentile=98, extend=None)

Resolve contour levels, color limits, and extension mode.

easyclimate.plot.icon.common._mask_bad_triangles(triang, x, y, max_edge=None)

Mask triangles with too-long edges.

easyclimate.plot.icon.common._get_cached_triangulation(x, y, *, max_edge=None, cache_key=None, use_cache=True, precompute_trifinder=False)

Build or reuse a triangulation for ICON cell-center contouring.

easyclimate.plot.icon.common._read_cell_vectors(u_da, v_da)

Read one-dimensional ICON cell vector components.

easyclimate.plot.icon.common._prepare_vector_points(ds, u_da, v_da, *, lon_min, lon_max, lat_min, lat_max, center_lon=None, input_radians=True, lon_name_cell='clon', lat_name_cell='clat', padding_lon=0.0, padding_lat=0.0)

Read, wrap, and subset ICON cell vectors for an explicit plot window.

easyclimate.plot.icon.common.thin_vectors_by_bins(x, y, u, v, *, lon_min, lon_max, lat_min, lat_max, nx_bins=35, ny_bins=20, method='nearest_center', cache_key=None, use_cache=True)

Thin vectors by lon-lat bins.

easyclimate.plot.icon.common._interpolate_vectors_to_grid(x, y, u, v, *, lon_min, lon_max, lat_min, lat_max, nx=160, ny=100, max_triangle_edge=None, cache_key=None, use_triangulation_cache=True, min_valid_fraction=0.02)

Interpolate irregular ICON cell vectors onto a regular lon-lat grid.