e2261b47-b057-4e92-93b6-df9988c434a6 en utf8 dataset Geography & Technology pointOfContact Geography & Technology author 2025-12-02T11:38:39Z ISO 19115:2003 - Geographic information - Metadata ISO 19115:2003 4326 EPSG 6.11 geonode:ai_woodland_output_multi AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) 2025-08-11T00:00:00Z publication date mapDigital This is an experimental dataset comprising of areas of different types of woodland, as depicted on the Ordnance Survey (OS) 25inch to the mile or 1:2500 Historic mapping (Epoch 1). If you have any feedback on this experimental dataset and how it might be improved, please contact datascienceunit@gov.wales. This dataset is created in a similar way to AI Predicted Historic Woodlands, Wales (OS County Series – 1843-1893), however in this version, each predicted polygon in the dataset is labelled as one of the following types of woodland: Broadleaf Conifer Mixed Wood Bush Brushwood Orchard Osier The labels have been determined using the original key from the Historic Landmark Map, which is made available through the National Library of Scotland. The estimates are produced using an AI computer vision model called mask-rcnn. This model is trained on a small sample of manually labelled data which contains different areas of woodland as described above. The model learns the key features associated with each type of woodland, such as the distribution and pattern of pixels. The model is then applied to predict areas of woodland by identifying the same features on unseen data across the Wales. As this technique involves predictive modelling, there are uncertainties with the dataset. For example, the model might incorrectly predict multiple types of woodland for a single area. This can happen in large, wooded areas with several different tree symbols marked near each other on the map.   To mitigate against this, we have applied a series of post-prediction processing steps to select a single woodland label for each predicted area.  However, even with these validation steps, there is still a possibility of the misidentification of woodland areas. For example, the model might not predict areas of woodland that exist, or the processing might result in different woodland labels assigned to polygons next to each other with the same tree symbols on the map. There is also not complete coverage of this map across Wales. No estimates are made on areas which are missing from the map. Due to these reasons, the dataset should not be used to calculate the area, size or coverage of woodland.  Instead, we recommend this dataset should be used to indicate the likelihood of certain types of woodland existing in different areas in Wales during this period. As well as the boundaries of the wooded areas, the model also provides a probability score which represents the model’s confidence in that area containing that type of woodland. This dataset is created using a different experimental methodology to other historic woodland outputs. For example, the Ancient Woodland Inventory uses other sources to identify areas of woodland. For this reason, the AI Woodland detections should be used independently to other data sources due to the risk in comparing areas of woodland from different sources that are not evaluated against the same criteria. completed Geography & Technology originator ESRI Shapefile 1.0 Global place license Open Government Licence for Public Sector Information (OGL): (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) en utf8 -5.616955160787931 -2.6183066145589486 51.338084518940164 53.449048882148396 https://datamap.gov.wales WWW:LINK-1.0-http--link Online link to the 'AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893)' description on GeoNode /static/geonode/img/missing_thumb.png?v=c7deb4c9 WWW:DOWNLOAD-1.0-http--download .png AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (Thumbnail Format) https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetLegendGraphic&format=image/png&WIDTH=20&HEIGHT=20&LAYER=geonode:ai_woodland_output_multi&STYLE=ai_woodland_multilabel&version=1.3.0&sld_version=1.1.0&legend_options=fontAntiAliasing:true;fontSize:12;forceLabels:on WWW:DOWNLOAD-1.0-http--download .png AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (Legend Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=json&srs=EPSG%3A27700&srsName=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .json AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (GeoJSON Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=excel&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .excel AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (Excel Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=csv&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .csv AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (CSV Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=text%2Fxml%3B+subtype%3Dgml%2F3.1.1&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .gml AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (GML 3.1.1 Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=gml2&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .gml AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (GML 2.0 Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=dxf&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .dxf AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (DXF Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=gpkg&srs=EPSG%3A27700 WWW:DOWNLOAD-1.0-http--download .gpkg AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (OGC Geopackage Format) https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Aai_woodland_output_multi&outputFormat=SHAPE-ZIP&srs=EPSG%3A27700&format_options=charset%3AUTF-8 WWW:DOWNLOAD-1.0-http--download .zip AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (Zipped Shapefile Format) https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Aai_woodland_output_multi&format=image%2Fpng&height=550&width=473&srs=EPSG%3A27700&bbox=159628.0%2C165548.359375%2C357071.5625%2C394892.21875 WWW:DOWNLOAD-1.0-http--download .png AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (PNG Format) https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Aai_woodland_output_multi&format=application%2Fpdf&height=550&width=473&srs=EPSG%3A27700&bbox=159628.0%2C165548.359375%2C357071.5625%2C394892.21875 WWW:DOWNLOAD-1.0-http--download .pdf AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (PDF Format) https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Aai_woodland_output_multi&format=image%2Fjpeg&height=550&width=473&srs=EPSG%3A27700&bbox=159628.0%2C165548.359375%2C357071.5625%2C394892.21875 WWW:DOWNLOAD-1.0-http--download .jpg AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (JPEG Format) https://datamap.gov.wales/download/7681 WWW:DOWNLOAD-1.0-http--download .zip AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) (Original dataset Format) https://datamap.gov.wales/geoserver/ows OGC:WFS geonode:ai_woodland_output_multi Service - Provides Layer: AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) https://datamap.gov.wales/geoserver/ows OGC:WMS geonode:ai_woodland_output_multi Service - Provides Layer: AI Predicted Historic Woodlands by Woodland Type Wales (OS County Series – 1843-1893) dataset