Show on /weather where the detected duct geometry traps each microwave
band. Overview mode bins cells by their lowest trapped frequency
(Bean & Dutton cutoff); band-picker mode masks cells whose duct doesn't
reach the selected band. Cutoff is pre-computed per cell in both
writers (Elixir derive + Rust derive_row reads best_duct_freq_ghz from
CellValues), persisted to ScalarFile, and shipped to the JS hook via
the existing binary cell pack. Also cleans up six pre-existing
length/1 credo warnings in unrelated test files.
- Beacon detail endpoints (LiveView + REST API) now hide unapproved
beacons from anonymous and unauthorized viewers; only the submitter
and admins can see pending records before approval. Adds
Beacons.get_visible_beacon/2 with scope-aware checks.
- API contact pagination now honors per_page end-to-end.
Radio.list_contacts/1 accepts :per_page and clamps to 200.
- API rate limiter: ETS table is now owned by a long-lived Sweeper
GenServer (won't die with a request task); Sweeper periodically
prunes expired-window rows to bound memory; init_table/0 race is
rescued.
- /scores/cells and /weather/cells: add per-IP rate limiting and a
shared GridBounds clamp/413 guard so global / oversized viewports
no longer drive unbounded binary responses.
- NEXRAD PNG unfilter (sub/up/average/paeth): replace acc++[byte]
+ Enum.at(acc, idx-bpp) with O(n) binary recursion. Decode time
for the 12200x5400 n0q frame goes from quadratic to linear.
- LiveTableFooter.parse_page and ScoresFile.fetch_bound: switch
String.to_integer/String.to_float to Integer.parse/Float.parse,
fall back to defaults instead of raising.
- PathLive and MapLive band-event handlers: replace
String.to_integer(params["band"]) with parse_int / parse_band_param
so a non-numeric band parameter no longer crashes the LiveView.
New LiveView at /weather-ca duplicates the /weather UI but defaults the
viewport to central Canada (55N, -100W, z=4) and renders the map div
with data-source="hrdps". The JS hook reads that attribute and appends
&source=hrdps to every cell fetch; the WeatherTileController routes
those reads through Weather.weather_grid_hrdps_at/2, which only reads
the <vt>.hrdps scalar dir and skips HRRR merging entirely. Timeline is
sourced from ScalarFile.list_valid_times_hrdps/0 so HRDPS-only hours
show up even when no HRRR file exists for the same valid_time.
Also drops "— Unified" from the algo.md H1.
The client moved to the binary cell-pack and canvas overlay last
commit, so the per-tile SVG endpoint, the TileRenderer module, and the
JSON shape of /weather/cells are all dead code. Remove them.
/weather/cells now always returns the binary WCEL pack (the ?format=bin
toggle is gone — there's only one format). The data-weather-tile-url
attribute and the weather_tile_url assign are dropped from the LiveView.
Also fix a latent bug surfaced once tests covered the default-layers
path: nil row values were writing the atom :nan into the binary segment
at runtime. Replaced with the explicit f32 quiet-NaN bit pattern so
Number.isNaN flags them correctly on the JS side.
Three changes that shrink first-paint and make layer toggles instant:
1. Server: /weather/cells now supports ?format=bin and ?layers=a,b,c. The
binary "WCEL" pack is ~3× smaller than JSON (Float32 columns, no key
overhead) and parses with DataView + typed-array views — essentially
memcpy on the client.
2. Client: replaced JSON parse + per-cell SVG <rect> with a custom
Leaflet canvas layer. The pack is columnar (lats/lons + Float32Array
per layer) and each draw is one fillRect per cell against a
precomputed 256-step color LUT. At low zoom (CONUS, ~80k cells) SVG
paint cost dominated; canvas keeps it under one frame.
3. Lazy prefetch: the initial fetch only requests the *current* layer
(~1/19 the bytes). Right after paint, a single background fetch
pulls every other layer into the same pack. Layer switches that land
after the prefetch finishes are pure recolor — no network, no
server CPU.
The /weather/tiles endpoint stays for backward compat. The JSON path of
/weather/cells stays too — the binary path is opt-in via ?format=bin.
Previously every layer toggle triggered 21 fresh tile requests with the
new layer in the URL — ~21 server-side SVG renders, plus the round-trip
overhead. Even with the GridCache fix the server still spent real CPU
generating thousands of <rect>s per tile, and the user felt it.
Add /weather/cells: a single JSON endpoint returning every layer field
for every cell in the requested viewport. The hook fetches once on
mount, time change, or pan/zoom, caches the cells in memory, and paints
them via L.svgOverlay. Layer switches now re-color the same cached
cells locally — zero network, zero server CPU.
The single SVG uses lat/lon coords with preserveAspectRatio="none";
Leaflet stretches it linearly to the bbox. There is mild equirect→
mercator distortion at low zoom over CONUS but it's imperceptible at
typical use (z6+) and the layer-toggle UX win is large.
Tile endpoint kept for back-compat. svgOverlay opacity matches the
prior tile renderer's 0.55 fill-opacity.
Move the /weather render path off raw HRRR profile decoding + per-cell
SoundingParams + WeatherLayers derivation. The dominant cost was
re-deriving the same scalar fields on every viewport pan and timeline
scrub.
Server side:
- New Microwaveprop.Weather.ScalarFile persists pre-derived scalar
rows on NFS, bucketed into 5°×5° chunk files under
<base>/weather_scalars/<iso>/<lat_band>_<lon_band>.etf.gz. Viewport
reads only decode the chunks that overlap the requested bounds;
point-detail clicks read exactly one chunk.
- weather_grid_at/2 and weather_point_detail/3 prefer ScalarFile;
ProfilesFile is now the cold-start fallback only.
- warm_grid_cache_and_broadcast/1 and warm_grid_cache_from_latest_profile/0
also persist the scalar artifact, and the cold-derive path kicks
off a per-valid_time-locked async materialization so the next
reader gets the cheap path.
- NotifyListener.handle_propagation_ready/1 fires
Weather.materialize_scalar_file/1 in a detached Task on the Rust
pipeline's NOTIFY propagation_ready, so steady-state forecast hours
arrive with their scalar artifact already on disk.
- available_weather_valid_times/0 unions ScalarFile + ProfilesFile so
the timeline survives an aggressive retention sweep on either side.
Browser side (finding #8):
- Mount the legend Leaflet control once and patch its inner content
on layer changes instead of remove + re-add on every renderLayer.
- renderTimeline now keys off the rendered button set: selection-only
updates take an applyTimelineSelection patch path that restyles
existing buttons in place. Full innerHTML rebuild only fires when
timelineData itself changes.
Also fixes a credo nesting-depth flag in tile_renderer.ex by extracting
interpolate_pair/2 from the inner anonymous function.
