Scope — CSV scope viewer

scope no file

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operators + - * / % ^ · functions abs sqrt sin cos tan exp log log10 floor ceil round sign min max clamp pow · deriv(sig[,t]) integ(sig[,t]) — finite-difference derivative / trapezoidal integral, t defaults to this file's time-like column · wrap a name with spaces/punctuation in [brackets] · computed on every loaded file that has the needed signal(s) · remembered in this browser across page reloads, and saved in the layout .json for other machines

—

xclick a signal

ythen click another

z…then a third

shift+click = colour map of the active series

x

x range →

x y z

rows cols click a cell to select it, then pick signals on the left · a cell's "kind" select changes its plot type · time cells share one x-range + cursor · drag/wheel = pan/zoom, drag = orbit for 3d

no plots open — use the buttons above to add one

Drop a data file here

csv · tsv · txt · dat — you choose the separator on import · nothing leaves this machine

import

separator custom separator / regex comment prefixes (space-separated) skip lines before header

first row is a header strip trailing inline comments decimal comma (1,234 = 1.234) skip blank lines

raw file — first lines (comments dimmed)

parsed preview

global

/ or ⌘/Ctrl+Ffocus signal search 1–9switch tab Alt+T / Alt+Y / Alt+D / Alt+Gnew time-series / XY / 3D / grid tab Escclose dialog · exit fullscreen

time-series plot

Ffit all + / −zoom in / out ← →pan drag on plotbox zoom shift+dragpan wheel / shift+wheelzoom x / zoom y drag the strip below the plotpan / select the visible range click a subplottarget it for the next signal drag a signal onto a subplotadd it there shift+click a signalappend to the last subplot dbl-clickfit

2D plot

Ffit + / −zoom dragbox zoom shift+dragpan wheel / shift+wheelzoom / zoom y only (unlocks 1:1) click a signal in the sidebarpick x, then y -- dropping a compare file auto-adds its matching trajectory, dashed shift+click a signalcolour-map the active series dbl-clickfit

3D plot

Ffit + / −zoom dragorbit shift+dragpan wheelzoom click a signal in the sidebarpick x, then y, then z -- dropping a compare file auto-adds its matching trajectory, dashed shift+click a signalcolour-map the active series dbl-clickfit real scaleeach axis auto-scales to a cube by default; toggle for true relative proportions, or use the x/y/z sliders to stretch manually

© 2026 Mattia Piazza · MIT license