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Ask for confirmation before fetching very large values - #2076

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NAThompson:feat/1651-large-dataset-guard
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silx-kit:mainfrom
NAThompson:feat/1651-large-dataset-guard

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Fixes #1651. Values estimated above 500 MB (including NeXus errors, auxiliaries and axes) are no longer fetched automatically: the vis shows the size and a "Load anyway?" button, so users can switch to a vis that needs less data. Smaller datasets behave exactly as before.

Before: 11.7 GB dataset stuck on "Loading data…" After: size and "Load anyway?"
After clicking "Load anyway?" Small datasets unchanged

🤖 Generated with Claude Code

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@NAThompson
NAThompson force-pushed the feat/1651-large-dataset-guard branch from 58819d9 to 81f1af5 Compare October 14, 2026 04:06

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Avoid loading data for matrix/heatmap view when selecting a large 2D dataset

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