Doug Johnson Productions

Scope guide · History & 3D

3D Histogram

Extend component populations into a rolling 15-second waterfall.

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Learn & Reference / Scope library / 3D Histogram

How has the distribution changed over time?

Add this view from Add scope > 3D Histogram, then choose the input you want to inspect. Use the pane's i button for its in-app reading guide.

Read this example.

Application-rendered RGB-parade history fixture with component panels and logarithmic population scale.
Application-rendered RGB-parade history fixture with component panels and logarithmic population scale. Click the image for a larger view.
  1. R′, G′ and B′ panels separate components; position across each panel is level.
  2. Bar height is sampled population. Logarithmic labels make smaller populations easier to compare.
  3. Age runs through depth to the 0s front edge. Repeated distributions form repeated layers.

Try it yourself.

  1. Open from Add scope or the Histogram cube icon.
  2. Choose a component; compare Overlay and Tiled.
  3. Rotate to read age, then compare linear and logarithmic Count scale.

Useful controls.

  • Uses the standard Histogram catalog, including HSV.
  • A fixed 0–100% population scale relates height to each component’s sampled total.
  • Up to ten distributions per second retain 15 seconds; Freeze and Clear history support inspection.

Changing source, component or count scale starts a fresh history.