Working with data

Tracks & plot styling

A track is one plotting lane with its own y-axis. Styling is set per placement.

Building tracks

Adding a track

Drop traces on the Add Track zone.
Click Add Track for an empty track.
Track → Add New Track (⇧⌘N).
Select traces in the browser and press >.

Double-click a track's name to rename it.

▾ Motor

voltage

current

12 6 0

Name row — colour stripe, track name (double-click to rename), and the chevron that collapses the signal list.
Signal rows — one per plot item. The dot opens the styling popover; the × removes the signal from this track.
Y-axis — drag to pan, double-click to return to autoscale.
Plot area — drag to zoom, double-click to reset both axes.
Resize handle — drag to change the track's height.

A track. Styling is per plot item, so current can be dashed here and solid elsewhere.

Adding signals

Drag traces from the browser onto a track's plot area. Dragging a signal between tracks moves it; dragging from the browser copies, so a trace can appear on several tracks.

Removing and resizing

× beside a signal removes it from the track.
× at the top of the track header deletes the track.
Drag the handle beneath a track to resize it.
The chevron collapses the signal list; the plot keeps drawing.

Plan limit

Free allows 4 tracks, Personal 12. Pro and Team are unlimited.

Styling a signal

Click the coloured dot beside a signal in a track header to open its styling popover. Settings apply to that placement only.

The same eight samples under each combination of draw mode, interpolation and marker style.

Name: The label shown in the track header and crosshair readout.
Draw mode: Line, Marker, or Line + Marker.
Line style: Solid or dashed.
Interpolation: Linear draws straight segments between samples. HV holds each value until the next sample — use it for signals that hold between updates.
Width: 0.5 to 10.
Marker style: Filled or hollow, sized 1 to 20.
Colour: Click the swatch for the palette. The + tile opens the macOS colour panel.

Y-axis modes

Each track sets its y range independently, in one of three modes.

The shaded band is the visible y range.

Autoscale: The default. Covers every visible signal, with padding.
Follow a signal: Keeps the current span and slides it to track one signal's newest sample. Available on tracks containing a live signal.
Manual: Set by zooming or panning y. Stays put until reset.

On tracks with a live signal, an icon beside the track name shows the current mode; click it to switch. To return to autoscale, double-click the y-axis or the plot area, or press ⌘R to reset every track.

Visibility

Hidden signals are excluded from a track's autoscale range and from the window's x range.

Rendering

Refract draws only the visible x window and decimates it to the width of the track, preserving peaks and troughs at any zoom level. NaN samples break the line rather than being drawn as zero.