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Add LVGMC warning map workflow

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2026-08-22 20:11:20 +03:00
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@@ -108,6 +108,20 @@ The renderer uses canvas `TextMetrics` visible-glyph bounds (`actualBoundingBoxL
Implementation status: both native exports are implemented and visually validated against the supplied production templates. Later newsroom feedback can still tune the per-template rectangles without changing the manual-entry workflow.
## Brīdinājumi
Purpose: prepare a newsroom map from the current LVĢMC open hydrometeorological-warning dataset without tracing warning areas manually.
Operator flow:
1. Open **Brīdinājumi**; warning metadata and ordered polygon coordinates load through the WeatherTool backend.
2. Select the independent 1920×1080 or 3840×1440 production canvas.
3. Optionally filter the current warning period by day and phenomenon.
4. Enter the editorial title. Warning geometry, severity colors, legend, source data, and validity information remain data-driven.
5. Preview and download the native-resolution PNG.
The two exports use separate geographic-to-pixel calibration and layout values. Neither output is produced by resizing the other. Upstream times are interpreted in the `Europe/Riga` timezone. Empty warning data is a valid state and produces an uncolored base map.
## Apskats
Purpose: aggregate selected fields across Latvia for a selected time range.