Graham McIntire e7f0f03bf0 Fix wgrib2 -lola binary parsing and add native_surface_refractivity ... wgrib2 -lola ... bin writes Fortran unformatted records (4-byte length header + data + 4-byte length trailer per message). parse_lola_binary was treating the binary as tightly packed, causing every message after the first to read from the wrong offset — values came out as garbage across all grid points. Fix: account for the 8-byte record overhead per message when computing the data offset for each message's grid values. This bug affects both the existing propagation grid extraction (which may have been producing subtly wrong scores) and the new native-level extraction (which was producing obviously wrong values). The fix is a one-line stride change. Also adds Backtest.Features.native_surface_refractivity for the Phase 1 sanity check, plus a tighter wgrib2 match pattern that selects only hybrid-level messages from the native file.		2026-04-10 08:13:33 -05:00
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features_test.exs	Fix wgrib2 -lola binary parsing and add native_surface_refractivity	2026-04-10 08:13:33 -05:00