img: Interpret DAT P flag as surface survey
commitc5026611a78c0d159935dbb373649aa2105c374f
authorOlly Betts <olly@survex.com>
Sun, 18 Feb 2024 20:21:00 +0000 (19 09:21 +1300)
committerOlly Betts <olly@survex.com>
Sun, 18 Feb 2024 20:29:54 +0000 (19 09:29 +1300)
tree9f6eb9381895239fb7de81a43b25dc235c6214e5
parent71d4694e450088aac327d6725cf63031c7a74f55
img: Interpret DAT P flag as surface survey

This flag is described as "Exclude this shot from plotting", but the use
suggested in the Compass docs is for surface data, and they "[do] not
support passage modeling".

Even if it's actually being used for a different purpose, Survex
programs don't show surface legs by default so the end effect is at
least to not plot as intended.
src/img.c
tests/multisection.dump
tests/multisection.plt
tests/pre1970.plt