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Issue #70 #83

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36f0fc5
Dirty solution to issue 70
Peiderk Jan 9, 2026
acb4cd0
better solution
Peiderk Jan 12, 2026
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22 changes: 18 additions & 4 deletions src/pyflexplot/plotting/boxed_plot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
import numpy as np
from matplotlib import pyplot as plt
from matplotlib.figure import Figure
import warnings

# Local
from ..input.field import Field
Expand Down Expand Up @@ -319,9 +320,10 @@ def _draw_colors_contours(
# Replace infs (apparently ignored by contourf)
arr = np.where(np.isneginf(arr), np.finfo(np.float32).min, arr)
arr = np.where(np.isposinf(arr), np.finfo(np.float32).max, arr)
before = list(ax.ax.collections)

try:
contours = ax.ax.contourf(
ax.ax.contourf(
field.lon,
field.lat,
arr,
Expand All @@ -337,9 +339,21 @@ def _draw_colors_contours(
# (Easier to catch error than explicitly detect 'empty' array)
return
raise e
else:
for contour in contours.collections:
contour.set_rasterized(True)

new = ax.ax.collections[len(before):]
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@pirmink pirmink Jan 13, 2026

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Suggested change
new = ax.ax.collections[len(before):]
# Workaround for deprecated contours.collection:
# Loop over ax.collections, ignore warning that are produced for collections
# that cannot be rasterized.
new = ax.ax.collections[len(before):]

for coll in new:
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
coll.set_rasterized(True)

# if this coll doesn't support being rasterized, ignore
if any(
issubclass(wi.category, UserWarning)
and "Rasterization of" in str(wi.message)
and "will be ignored" in str(wi.message)
for wi in w
):
continue


def _add_markers(ax: MapAxes, field: Field, markers_config: MarkersConfig) -> None:
Expand Down