# RAA File Format

> [!note] このページはまだ翻訳されておらず、英語で表示されています。


The RAA file format is the archive companion of the [RAE File Format](rhopoint-elements-hub-rae-file-format.md): a standard **ZIP archive** that bundles multiple RAE files. It is used to export and transfer whole sets of measurements in a single file.

### Structure

- An RAA file is a regular ZIP archive (PKZIP format) with the file extension `.raa`. Any standard ZIP library or archive tool can open it.
- Each entry in the archive is a complete binary RAE file containing **one measurement**, named after the measurement's source identifier: `<sourceIdentifier>.rae`.
- There is no manifest or index file — the archive entries themselves are the content.

```
example.raa (ZIP)
├── 0d9f4c1e-6a2b-4f43-9c1a-2f5e8d7b3a10.rae
├── 3b7e02aa-91c4-4d0f-8f6d-64c2a92f4b77.rae
└── b1a4f6d2-3c8e-45b9-a0d7-9e5c31f8e2c4.rae
```

### Parsing

1. **Open** the file with a ZIP library.
2. **Iterate** over the entries and read each one into memory.
3. **Parse** each entry as a binary RAE file (see [Decompression and parsing](rhopoint-elements-hub-rae-file-format-decompression-and-parsing.md)).

> [!note]
> The RAE-level `Compression` setting varies per entry: some writers store the entries uncompressed at the RAE level and let the ZIP compression do the work, others gzip the RAE payload as well. Always evaluate the `Compression` property of each entry's [File Header](rhopoint-elements-hub-rae-file-format-file-header.md) instead of assuming one or the other.

### Where RAA files are used

- **Rhopoint Appearance Elements (AE)** exports and imports measurement collections as `.raa` files.
- **PDF reports** generated by AE can carry the underlying measurement data as an embedded `.raa` attachment, so the original measurements can be re-imported from the report itself.

### MIME type

There is no dedicated MIME type for RAA files; since the container is a plain ZIP archive, use `application/zip` when transferring RAA files over HTTP.