Clamp

Math · Arithmetic

Bound a value between a lower and upper series: min(max(value, lo), hi). Values below lo snap up to lo, above hi snap down to hi. NaN in any input yields NaN.

Clamp keeps a value inside a range. Anything below the low bound snaps up to the low; anything above the high bound snaps down to the high; values already in range pass through untouched. It's the "don't let this go out of bounds" block for taming a level or a size.

How it works

Each bar it computes min(max(value, low), high) — first floor the value at low, then cap it at high. All three inputs are series, so the bounds can be constants or dynamic (e.g. an ATR-based ceiling). If any of the three inputs is NaN on a bar, the result is NaN. Lookahead-free, no parameters.

When to use it

Use it to bound anything that shouldn't run away: cap a computed stop distance so it never exceeds a max risk, floor a position-size multiplier so it never goes negative, or keep a derived score within sane limits before it drives a decision. It's a safety rail — the clean, deterministic alternative to hoping a value stays reasonable.

Example

Bounded stop distance: build a raw stop as ATR × 2 with Multiply, then Clamp it between a Constant floor and ceiling so the exported strategy never places an absurdly tight or absurdly wide stop. Feed the clamped value into the Tester's stop input.

Tips & gotchas

• Bounds can be series — wire dynamic floors/ceilings, not just constants.
• If low > high the result collapses to that crossed range — keep low ≤ high.
• NaN in any input → NaN out.
• To bound and remap a range instead of hard-snapping, use Rescale.

Related blocks

• Maximum
• Minimum
• Rescale
• Constant

Inputs

Socket	Type	What to wire in
Value	series / bars	Series to bound. BARS uses close.
Lo	series	Lower bound
Hi	series	Upper bound

Outputs

Output	Type	Plots as	Description
clamp	series	Line · sub-pane	Value constrained to [lo, hi].

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Reference auto-generated from the block catalog · category Math.