Update: See the OS Translator II, for converting large number of tiles.
This page is intended to allow users to quickly get started using OS MasterMap Topography Layer data in QGIS.
QGIS is a fully featured Free and Open Source desktop GIS package. Here we'll describe how to load, view and apply styles to the Topography Layer
You'll need the following before starting:
See here for further information on how to install and use QGIS.
OS Translator is a plugin intended to help users obtain, style and use Ordnance Survey data in QGIS. The current release of the plugin allows Ordnance Survey MasterMap Topography Layer GML files to be converted to ESRI shapefile. Working with shapefiles in QGIS is easier and faster than working directly with GML. A set of qml (QGIS styling) files and SVG files will be provided for styling Ordnance Survey MasterMap in accordance with Ordnance Survey's style guidelines.
We hope to add extra functionality (including support for the PostGIS geodatabase) in the near future.
Follow this procedure to install the plugin:
The QGIS Python Plugin Installer dialog should appear.
If you have any problems, see the Troubleshooting section for some possible solutions.
The following instructions will demonstrate how to convert Ordnance Survey's MasterMap Topography sample data into Shapefiles which can be opened in QGIS.
Styling vector files in QGIS is very flexible. Different methods of styling can be chosen based on the attribute table of the vector file. In this example, we will style the TopographicArea.shp and TopographicLine.shp files produced in the previous step.
The figure below shows the 2 layers in QGIS before styling.
To apply a style to TopographicArea.shp, download and unzip our
QGIS rule-based styles for MasterMap Areas (superseded - see OS Translator II). The file contains OSAreasRulesBased.qml. In QGIS, right-click on TopographicArea.shp and select Properties. A new window will open. Click Load Style ... and locate OSAreasRulesBased.qml. Click OK.
To apply styles to TopographicLine.shp, download and unzip our
QGIS rule-based styles for MasterMap Lines (superseded - see OS Translator II). In QGIS, right-click on TopographicLine.shp, select Properties and click on Load Style ... and locate OSLinesRulesBased.qml. Click OK.
This may happen if your network requires you to use a proxy server to access the internet. If this is the case, you'll need to configure your proxy server settings. To do this: