Histogram

Raw samples binned for you, with p50/p95/p99 pins and an overflow bin for the long tail.

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Category
Data & feedback
Access
Pro
Source
254 lines · one file
States
5 drawn

The decision inside it

The tail gets one bin

A handful of timeouts would stretch the axis until the real shape is a sliver. They fold into one hatched overflow bin, so the body of the distribution keeps the width.

When to use it

Use Histogram to show how raw samples are spread, such as latencies, deal sizes or time to sign. Pass the samples; it bins them, pins p50, p95 and p99, and folds values past overflowAt into one bin.

Installation

How you get it

Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.

Use Liro's Histogram for this.
Install it: npx shadcn@latest add @liro/histogram
(the @liro registry is set up in components.json, with LIRO_KEY in .env.local)
Import it from @/components/ui/histogram.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.

For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Pro components install through the @liro registry with your CLI token: see the Namespaced tab.

Usage

components/latency-histogram.tsx
import { Histogram } from "@/components/ui/histogram";

export function Latency({ samples }: { samples: number[] }) {
  return (
    <Histogram
      samples={samples}
      unit="ms"
      percentiles={[50, 95, 99]}
      overflowAt={1000}
      description="API response times today"
    />
  );
}

API reference

“Copy prompt” above puts a full brief on your clipboard, install command, dependencies, props, and the mistakes an assistant usually makes with this component.

Props

Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.

TypeNotes
samplesnumber[] Yes–
binCountnumber NoFix the number of bins (before the overflow bin). Default: worked out.
percentilesnumber[] NoPercentiles to pin, 0–100. Default [50, 95, 99].
overflowAtnumber NoSamples at or above this go in one last bin.
unitstring NoAfter every number: "ms", "s", "$".
format(v: number) => string NoFormats a sample value. Default: whole numbers with separators.
heightnumber No–
descriptionstring YesAccessible summary.
loadingboolean No–
errorReact.ReactNode No–
onRetry() => void No–
classNamestring No–

Dependencies

npm packages

clsxrechartstailwind-merge

Liro foundations, installed alongside it

liro-themechart

States

All of them are drawn by the component. None is left for you to design.

  • Auto bins
  • Fixed bins
  • Loading
  • Empty
  • Error

Accessibility

  • Keyboard reachable throughout, in visual order
  • Focus trapped in overlays, Escape closes them
  • Focus returns to whatever opened it
  • Live regions announce what changed, not that something did
  • Honours prefers-reduced-motion

Responsive behavior

  • Sizes to its container, not the viewport
  • Usable from 320px up
  • Pointer-based interaction, so trackpad and touch both work
  • No hover-only affordances