# Map Warper

> This is an open source platform for georectifying scanned images of maps, so that they can be displayed in web maps or used in GIS applications

**Wikidata**: [Q126085109](https://www.wikidata.org/wiki/Q126085109)  
**Source**: https://4ort.xyz/entity/map-warper

## Summary
Map Warper is an open-source platform used to georectify scanned images of maps. This process aligns historical or analog maps with modern digital coordinate systems, allowing them to be displayed in web maps or used in Geographic Information System (GIS) applications. The software enables users to transform static map images into spatially accurate data layers.

## Key Facts
- **Primary Use:** Georectifying scanned map images.
- **Other Uses:** Annotation, georeferencing, data conversion, and spatial analysis.
- **Type:** Open-source software, Geospatial Platform.
- **License:** MIT License.
- **Source Code:** Available on GitHub at `https://github.com/timwaters/mapwarper`.
- **Integrations:** Uses OpenStreetMap.
- **Used By:** Web maps and web map applications.
- **Official Website:** `https://mapwarper.net/`.
- **Aliases:** MapWarper.

## FAQs
### Q: What is the main purpose of Map Warper?
A: The main purpose of Map Warper is to georectify, or "warp," scanned images of maps. This process assigns geographic coordinates to the image, allowing it to be used as a layer in modern GIS software and web mapping applications.

### Q: Is Map Warper free?
A: Yes, Map Warper is open-source software distributed under the MIT License. Its source code is publicly available for anyone to use, modify, and distribute.

### Q: What can you do with a map after processing it in Map Warper?
A: After a map is georectified with Map Warper, it can be displayed as a layer in web maps or imported into GIS applications for spatial analysis, data conversion, and annotation.

## Why It Matters
Map Warper plays a crucial role in making historical and analog cartographic materials accessible and useful in the digital age. Many valuable maps exist only as physical documents or scanned images, which lack the spatial data needed for modern analysis. Map Warper solves this problem by providing an open-source tool to align these images with real-world coordinate systems.

This process unlocks the rich data contained in historical maps for researchers, historians, geographers, and the public. It allows for direct comparison between past and present landscapes, analysis of historical geographic features, and the creation of interactive digital map collections. By being an open-source platform, it democratizes the ability to work with archival maps, removing the cost barriers associated with proprietary GIS software.

## Notable For
- **Specialized Function:** The platform is specifically designed for the task of georectifying scanned map images, making it a focused tool for digital cartography and historical GIS.
- **Open-Source Accessibility:** As an open-source project under the MIT License, it is freely available for use, modification, and integration into other projects.
- **Web-Based Platform:** It operates as a web-based tool, facilitating collaboration and access without requiring users to install complex desktop GIS software.
- **Integration with OpenStreetMap:** The platform uses OpenStreetMap as a base layer, providing a familiar and robust reference map for aligning scanned images.

## Body
### ### Function and Use
Map Warper is a geospatial platform designed to transform static, scanned map images into spatially aware data. Its primary function is georectification, the process of stretching and aligning an image to match a geographic coordinate system.

Beyond its core function, Map Warper supports several other uses:
- **Georeferencing:** Assigning geographic coordinates to points on the map image.
- **Annotation:** Adding notes or marking features on the rectified maps.
- **Data Conversion:** Exporting the processed maps into formats compatible with GIS applications.
- **Spatial Analysis:** Enabling the use of historical map data in modern analytical workflows.

The output from Map Warper is intended for use in web maps and web map applications, allowing historical maps to be overlaid on contemporary digital maps.

### ### Technical Details
- **License:** The software is licensed under the MIT License, a permissive open-source license.
- **Copyright:** The software is copyrighted.
- **Source Code Repository:** The complete source code is hosted on GitHub at `https://github.com/timwaters/mapwarper`.
- **Dependencies:** The platform utilizes OpenStreetMap for its base map layers.

### ### Community and Collections
Map Warper is recognized as a valuable tool within academic and research communities. It is included in several digital tool collections, including:
- Social Sciences and Humanities Open Marketplace
- Text Analysis Portal for Research (TAPoR)

## References

1. [Source](https://marketplace.sshopencloud.eu/tool-or-service/PF7kct)
2. [Source](https://marketplace.sshopencloud.eu/tool-or-service/OK99rl)
3. [Source](https://tapor.ca/tools/994)
4. [Source](https://tapor.ca/tools/819)