https://github.com/vojtatom/laz.ts

⠇⠁⠵ LAS/LAZ Pointcloud Reader in TypeScript
https://github.com/vojtatom/laz.ts

las laser laz point-cloud reader

Last synced: about 4 hours ago
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⠇⠁⠵ LAS/LAZ Pointcloud Reader in TypeScript

• Host: GitHub
• URL: https://github.com/vojtatom/laz.ts
• Owner: vojtatom
• License: other
• Created: 2023-06-15T09:00:11.000Z (over 1 year ago)
• Default Branch: dev
• Last Pushed: 2023-06-29T09:46:58.000Z (over 1 year ago)
• Last Synced: 2024-10-06T07:16:37.286Z (about 1 month ago)
• Topics: las, laser, laz, point-cloud, reader
• Language: TypeScript
• Homepage:
• Size: 2.28 MB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# LAZ.ts ⠇⠁⠵

TypeScript package for loading LAS/LAZ, primary developed for for WebGL applications, intended for lazy people who just want to load their point clouds and don't care about the details.

-   ✅ returns a dev-friendly format

-   ✅ internally based on [laz-perf](https://github.com/hobuinc/laz-perf)

-   ✅ supports funky coordinate systems

-   ✅ uses vitest 🧪 for testing

## Install from [npm](https://www.npmjs.com/package/lazts)

```

npm install lazts

```

## Usage

```ts

import { parse } from 'lazts/lazts';

//1) obtain ArrayBuffer somehow

const arrayBuffer = openFileAsArray('testdata/test.las');

//2) parse it

const data: LazData = await parse(arrayBuffer);

```

where `LazData` is defined as

```ts

interface LazData {

    header: {

        pointsOffset: number;

        pointsFormatId: number;

        pointsStructSize: number;

        pointsCount: number;

        scale: [number, number, number];

        offset: [number, number, number];

        maxs: [number, number, number];

        mins: [number, number, number];

        totalToRead: number;

        totalRead: number;

    };

    attributes: {

        position: { value: Int32Array; size: 3 };

        intensity: { value: Float32Array; size: 1 };

        classification: { value: Uint8Array; size: 1 };

        color0?: { value: Uint8Array; size: 4 };

    };

}

```

When working with funky coordinates (e.g. the coordinates are too big and there is no offset), you can use the `adjustOffset` option:

```ts

const dataWithNonZeroOffset = await parse(buffer, {

    adjustOffset: true,

});

```