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Add fail-fast for datasets outside the visible extent #1345

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merged 2 commits into from
Jun 14, 2024
Merged

Add fail-fast for datasets outside the visible extent #1345

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8f9d06a
Add fail-fast for datasets outside the visible extent
raphaelquast Jun 13, 2024
33e333e
make pre-commit happy
raphaelquast Jun 13, 2024
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23 changes: 19 additions & 4 deletions datashader/mpl_ext.py
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Original file line number Diff line number Diff line change
Expand Up @@ -205,12 +205,22 @@ def __init__(
self.plot_height = plot_height
self.width_scale = width_scale
self.height_scale = height_scale

x_col = glyph.x_label
y_col = glyph.y_label

self.bbox_df = Bbox(
np.array(
[[df[x_col].values.min(), df[y_col].values.min()],
[df[x_col].values.max(), df[y_col].values.max()]]
)
)

if x_range is None:
x_col = glyph.x_label
x_range = (df[x_col].min(), df[x_col].max())
x_range = (self.bbox_df.x0, self.bbox_df.x1)
if y_range is None:
y_col = glyph.y_label
y_range = (df[y_col].min(), df[y_col].max())
y_range = (self.bbox_df.y0, self.bbox_df.y1)

ax.set_xlim(x_range)
ax.set_ylim(y_range)

Expand Down Expand Up @@ -262,6 +272,11 @@ def make_image(self, renderer, magnification=1.0, unsampled=True):
"""
x1, x2, y1, y2 = self.get_extent()
bbox = Bbox(np.array([[x1, y1], [x2, y2]]))

# Fail-fast if visible extent does not overlap with data extent
if not bbox.overlaps(self.bbox_df):
return None, 0, 0, None

trans = self.get_transform()
transformed_bbox = TransformedBbox(bbox, trans)
if (
Expand Down
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