Changelog
All notable changes to Tachapps are documented here. The format follows Keep a Changelog.
[Unreleased]
Added
- Probabilistic P10/P50/P90 forecast outputs
- Dashboard PDF export with custom header/footer
Changed
[2.4.0] — 2026-03-15
Added
- Linked charts — Synchronize X-axis zoom/pan across multiple chart widgets on the same dashboard
- KPI trend indicator — Compare current value to a configurable prior period
- Surface colorscale editor — Choose from 12 built-in colorscales per surface layer
Changed
- Tooltip values now respect the Y-axis number format setting (no more raw format strings in tooltips)
Fixed
- Chart widgets now correctly handle missing daily records without rendering gaps as zeros
- Table widget CSV export now includes column header labels instead of field IDs
[2.3.1] — 2026-02-01
Fixed
- Resolved a race condition causing dashboard widgets to occasionally load stale data after date range changes
- Fixed surface upload failing for ZMAP+ files larger than 20 MB
[2.3.0] — 2026-01-10
Added
- Waterflood pattern analysis in Reservoir Models
- REST API:
DELETE /productionendpoint for removing records by date range
Changed
- Dashboard auto-refresh now uses WebSocket push instead of polling, reducing latency to <1 second
- API rate limit increased from 60 to 300 req/min for Professional plan
Deprecated
/api/v0/endpoints — will be removed in v3.0.0
[2.2.0] — 2025-11-20
Added
- Data-driven forecasting (type curve matching) in Forecasting module
- GeoTIFF surface format support in Surface uploads
- User-configurable dashboard auto-refresh interval (5 min / 15 min / 1 hr / manual)
Fixed
- Fixed incorrect cumulative calculation when wells have non-contiguous production history
[2.1.0] — 2025-09-05
Added
- Normalization options in Production Analytics (per lateral foot, per perf foot, type curve)
- Conditional formatting for Table widgets
Changed
- Improved DCA auto-fit speed by 60% using parallel optimization
[2.0.0] — 2025-06-01
Added
- Complete redesign of Dashboard module with 12-column drag-and-drop grid
- New widget types: KPI, mini-widget
- Combo charts with dual Y-axis support
- REST API v1 released with full CRUD for projects, wells, and production data
Removed
- Legacy dashboard builder (v1 format) — dashboards are migrated automatically on first login