---
license: gfdl
language:
- en
tags:
- wikidata
- cronotopia
- openstreetmap
pretty_name: Cronotopia
---

# Cronotopia

This repository provides the preprocessed data distributions for Cronotopia, a specialized engine for the visualization and analysis of historical geospatial data. 

The primary artifact is a consolidated SQLite database containing both structured historical records and vector map tiles, optimized for deployment in environments requiring total offline autonomy.

## Resource Description

The hosted file, `cronotopia.db.gz`, is a compressed SQLite database. It serves as the unified data backend for the Cronotopia application, integrating the following components:

*   **Historical Entities:** Records extracted from Wikidata, including temporal attributes (dates of birth, death, or occurrence) and geospatial coordinates.
*   **Vector Tiles:** Map data stored in MVT (Mapbox Vector Tile) format within the `tiles` table, enabling local map rendering without external tile providers.

## Technical Specifications

| Attribute | Specification |
| :--- | :--- |
| **File Format** | SQLite 3 (Gzip compressed) |
| **Primary Data Source** | Wikidata (JSON Dumps) |
| **Map Source** | OpenStreetMap (via Protomaps/MVT) |
| **Temporal Range** | Variable (spanning ancient history to the contemporary era) |

## Implementation and Usage

To utilize this database with the Cronotopia server, follow these procedures:

### 1. Retrieval and Extraction

Download the artifact and decompress it using standard utilities:

```bash
wget https://huggingface.co/datasets/eja/cronotopia/resolve/main/cronotopia.db.gz
gunzip cronotopia.db.gz
```

### 2. Service Initialization

Execute the Cronotopia binary, directing it to the local SQLite file. This will initiate the API and the web interface.

```bash
./cronotopia --db cronotopia.db --web-host localhost --web-port 35248
```

The application will be served at `http://localhost:35248`.


For further technical documentation regarding the ingestion pipeline or server configuration, refer to the [official GitHub repository](https://github.com/eja/cronotopia).