Viewer: GPS sites / Both view, trajectory fit, map tools; MIDAS demo source - #56
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`--source midas` builds monthly straight-line series from UNR's IGS20 MIDAS station velocities over each station's observing span. It needs one ~5 MB table instead of every station's series, so it suits a global demo of the viewer's GPS-sites layer. The exporter now also accepts frames without sigma columns. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
--stations FILE (default OPERA_UNR_GNSS_stations_midas.parquet when it exists) is published beside the grid; --note TEXT / --no-note set the note panel, which defaults to explaining the MIDAS simplification when a stations file is deployed. Also publishes PB2002_plates.json if present. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
- Grid / GPS sites / Both switch; Both draws grid nodes as squares and sites as circles on a shared colormap over the union of both records, with per-set marker size and single-color swatches. - Keyless OpenFreeMap light/dark vector basemaps plus Google hybrid; basemap, projection, terrain and plates (boundaries / names / off) as icon buttons; zoom and compass top left. - Search box: coordinates, point ids, or place names (Nominatim). - Editable record start/end bounding the slider and playback. - Charts open on the point's own record; optional least-squares fit (polynomial, annual/semi-annual, Heaviside steps); CSV gains a header with point type, location and velocity. - Optional deployment note (?note= / deploy-pages.sh --note). Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Follow-up to #45 / #48 for the UNR grid viewer (
scripts/).Viewer (
browse_unr_grid.html)#header with point type, id, lat/lon, reference and velocity ± σ.?note=ordeploy-pages.sh --note).create-geoparquet.py:--source midaswrites monthly straight-line series from UNR's IGS20 MIDAS station velocities — a light stand-in for a global GPS-sites demo. The exporter also accepts frames without sigma columns.deploy-pages.sh:--stations FILEpublishes a GPS-sites dataset;--note TEXT/--no-notecontrol the note, which defaults to explaining the MIDAS simplification when stations are deployed; also publishesPB2002_plates.jsonwhen present.Tested in headless Chromium (software WebGL) against the published global grid, a real California stations export (1,906 UNR stations) and the global MIDAS demo file; the fit recovers known values on a synthetic series and matches MIDAS east velocity at ISLK (−22.48 vs −22.46 mm/yr).
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