ArcMap

These instructions are based on ArcMap version 10.8.1. and assume you have set the default coordinate reference system to British National Grid (EPSG 27700).

Loading and displaying the GML supply using the Quick Import tool

You can import GML data into ArcMap using the Quick Import tool that converts the GML into file geodatabase (.gdb).

To load GML data into ArcMap:

1. Open ArcCatalog and click and (ArcToolbox icon) in top toolbar to open the ArcToolbox.

1. In ArcToolbox, expand Data Interoperability Tools and click Quick Import.

1. In the Quick Import dialog, click … (next to the Input Dataset field), and navigate to and select your OS MasterMap Topography GML data.

1. In the Specify Data Source dialog:

   • Format: GML SF-0 (Geography Markup Language Simple Features Level SF-0 Profile) will be detected automatically.

   • Coord. System: Enter British_National_Grid or click … and select it in the dialog.

   • Click OK.

1. In the Quick Import dialog:

   • Output Staging Geodatabase field: Click (file browser icon), navigate to and name the file geodatabase (.gdb) folder, and click Save.

   • Click OK to start the Quick Import.

     

When the import process is complete, a message will display in ArcCatalog. To display the GML data in ArcMap:

1. Open an existing project or create a new one.

2. In the top toolbar, click (Add Data icon).

1. In the Add Data dialog:

   • Navigate to the file geodatabase created in the previous procedure. If the relevant folder does not display, click (Connect to Folder icon) and navigate to the file geodatabase folder from there.

   • Select the layers you want to load. You can select multiple layers at the same time to save repeating these steps for each layer in the file geodatabase.

   • Click Add.

Your geodatabase layers will now display in both the Table of Contents panel and the map area.

Loading and displaying shapefiles

As an alternative to using ArcMap’s Quick Import tool (previous section), you can convert your GML data to shapefile using FME and QGIS, and then add the shapefiles directly to ArcMap.

To load shapefiles into ArcMap

1. Open an existing project or create a new one.

2. In the top toolbar, click (Add Data icon).

1. In the Add Data dialog:

   • Navigate to the shapefiles you want to load. If the relevant folder does not display, click (Connect to Folder icon) and navigate to the file geodatabase folder from there.

   • Select the shapefiles that you want to load. You can select multiple layers at the same time to save repeating these steps for each shapefile.

   • Click Add.

     

Your shapefiles will now appear in both the Table of Contents panel and the map area.

You may need to reorder the layers to see the data correctly. You can reorder layers using drag and drop. We recommend the following layer order: CartographicText, CartographicSymbol, TopographicPoint, BoundaryLine, TopographicLine and TopographicArea.