Version: [5435] 02viz - Geospatial Visualization Studio 0.9.2

## [0.9.2] - 2026-06-16

- **Plotly and Vega-Lite no longer leave a blank panel on QGIS builds
without QtWebEngine.** When a QGIS build ships no QtWebEngine, the
embedded panel falls back to the legacy QtWebKit viewer — and that old
viewer cannot run the modern JavaScript (ES6+) that Plotly.js and
Vega-Lite require, so their charts stayed blank in the dock even
though they exported and opened correctly in a browser. ECharts and
the matplotlib image engine were unaffected (they run on QtWebKit).
The dock now detects the QtWebKit viewer and, for Plotly/Vega-Lite,
shows a short explainer in the panel instead of a silent blank: your
chart is still built — one click on **↗** opens it in your system
browser, or use **Export HTML**. For a chart that renders inside the
dock, switch to the **ECharts** engine, or install QtWebEngine for
QGIS.
- Root-caused in real QGIS: under QtWebKit the engines fail with
`ReferenceError: Can't find variable: Plotly` / `vega` (the bundles
never parse), while ECharts renders normally; under QtWebEngine (QGIS
4 / Qt6) all engines render. Chart output, the engines themselves and
exports are unchanged — this only affects what the embedded panel
shows on a QtWebKit-only QGIS.

yes

geo140195philo

2026-06-16T17:34:19.975958+00:00

3.28.0

4.99.0

None

no

Version management

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