v1.2.0

The Trace Challenge

PlotTracer ships 14 example figures. Seven of them now come with the real
numbers behind the plot committed alongside the image — so the app can tell you
exactly how close your extraction landed.

Help ▸ Examples ▸ Take The Trace Challenge starts a timed game: five rounds
drawn at random from the seven, each pre-calibrated so you go straight to
tracing. Extract the curve, press Done, and the round is scored against the
ground truth. The score is a single number — time — because accuracy errors
are charged as added seconds. Rushing sloppily just trades placement time for
penalty time; the fun is finding the sweet spot.

• Use whatever tools you like. By-colour, Flood-fill, Guide points, manual
  placement — the clock and the error penalty are the challenge, not an
  artificial restriction.
• The true answer is drawn on your figure after each round, next to a
  breakdown of where your seconds went.
• Five scoring families, each judged on its own terms: continuous curves
  (scored against the interpolated truth, no penalty for using more or fewer
  points), scatter (one-to-one nearest matching, with misses and extras counted),
  histograms, bar charts, and box plots (compared as five-number summaries).
• Local high-score table — name, date, time — kept on your machine.

It doubles as an honest accuracy check: if you want to know how much to trust a
digitizer before you trust it with your data, measure it against figures whose
values are known.

Also new

• Auto-extract ▸ By colour: drag a box directly on the image to limit the
  trace to a region. No toggle first — the same gesture as the Select tool's
  marquee.
• Date axes read as dates in the table. A date-calibrated column showed a raw
  serial number on screen while the CSV export already wrote a real date; the
  table now uses the same formatter as the export.

Fixes

• The zoom loupe stays usable near the floating cards — it now paints above
  them instead of behind, and hides while your cursor is over a card rather than
  jumping to the middle of the plot.
• Clicks no longer get eaten under the Auto-extract card. In Guide-points and
  Flood-fill modes you place points by clicking the curve; a click landing under
  the card's footprint silently did nothing. The card is click-through now,
  except on its own controls.
• "+ Add series" keeps the tracing tool you were using. Tracing a multi-curve
  figure no longer dumps you back to place-point on every added series.
• Tall fold-out cards scroll instead of spilling off a short window
  (Measure, Image, Error bars).
• The Select sub-mode strip closes when you click away from it.
• Geometry no longer leaks between series when switching or adding one.
• Smoother clicking during a timed round — the game clock used to re-render
  the whole workspace ten times a second, which made canvas clicks feel dropped.

Packaging

The Electron entry files are now globbed rather than listed by hand, so a newly
added one can't be silently left out of the installer.

Downloads

Linux .AppImage / .deb, Windows .exe, macOS .dmg / .zip (Apple Silicon).
Builds are unsigned — your OS will ask you to confirm on first launch.

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Full Changelog: v1.1.0...v1.2.0