Ordering OS NGD data

A Lightning Talk

What is OS Select+ Build?

OS Select+Build is the portal to enable users to order OS NGD data. It is located on the existing OS Data Hub in the Downloads section

Clicking on the OS Select+Build tab opens up the Recipe Library. ​

Recipe is the term that we use to describe the bespoke set of data choices that a user creates. A recipe can be for one theme, one collection, one feature type – or any combination of these.​

To create a recipe, simply select the Create a new recipe button

How to create a new recipe​

Once you have clicked the Create new recipe button you’ll have the option to select which layers of data you want to have as part of this recipe.​

• Themes​: There are nine themes: Administrative and Statistical Units; Buildings; Geographical Names; Land; Land Use; Structures; Transport and Water​

• Collections: Under each theme is a series of Collections such as Building Features of Structure Features​

• Feature Types: Under each collection is a series of Feature Types such as Compound Structure; Structure; Structure Line and Structure Point.​

You can select data at the Theme, Collection or Feature Type level, give the recipe a name and select ‘Create recipe’​

Filtering

Clicking on each of the themes, collections or feature types will bring up information on that set of data.​

If you don’t want to take all of the data in a particular feature type it​ is possible to filter that layer. Once a feature type is selected a filter icon appears next to that row which enables filtering.​

How the data can be filtered depends on the type of attribute and this is what the next sections will cover in detail.​

Which fields can be filtered?​

Different fields can be filtered for different feature types and not all fields appear as filterable for all feature types. ​

There are two main types of field: Text and Numerical.​

• Text fields include: catchmentName (water network), catchmentID (water network), description, descriptionGroup, extentDefinition, maintenanceAuthority (transport network), maintenanceResponsibility (transport network), name1_text, operationalStatus, OSLandCoverTierA (land, structure), OSLandCoverTierB (land), OSLandUseTierA (land use, structure), restriction (transport network), stakeholder

• Numerical fields include: absoluteHeightMaximum, absoluteHeightMinimum ​ (buildings part & structures)

Filtering text fields​

Filtering options will include two or more of the following:​

=​	Selects all features where the attribute equals the value selected​
Not Equal​	Selects all features where the attribute does not equal the ​ value selected​
In​	The same as = but allows the selection of multiple values​
Not in​	The same as Not Equal but allows the selection of ​ multiple values​
Null​	Selects all rows where the chosen attribute is Null​
Not Null​	Selects all rows where the chosen attribute is not Null​
Is Empty​	Selects all rows where the chosen attribute is empty​
Is not empty​	Selects all rows where the chosen attribute is not empty​

Filtering numerical fields​

Filtering options will include two or more of the following:​

=​	Selects all features where the attribute equals the value selected​
Not Equal​	Selects all features where the attribute does not equal selected value​
<​	Selects features where attribute value is less than the chosen value ​
<=​	Selects features where the attribute value is less than or equal to the chosen value ​
>​	Selects features where attribute value is greater than value chosen​
>=​	Selects features where the attribute value is greater than or equal to the chosen value​
Between​	Selects features where attribute value is between two chosen values​
Not Between​	Selects features where the attribute value is outside of the two chosen values​
Null​	Selects all rows where the chosen attribute is Null​
Not Null​	Selects all rows where the chosen attribute is not Null​

Using the Recipe Library​

Once recipes have been created, they appear in the​ Recipe Library. ​

• Over time this will build up so the list can be filtered by name, description or content (theme, collection or feature type)​, as well as creation date and if the recipe is one you have shared or had shared to you

• Clicking on the hyperlinked name of the recipe will show the chosen data layers in that recipe​

  as well as 2 features:

  • Add data package button - this is the same as on the recipe list

  • Recipe actions - this allows you to share or delete this recipe

• Once the recipe you want to order has been chosen, you can order the data for your area of interest by clicking the blue Add data package button ​

Adding a data package​

Creating a data package is similar to the existing part of the OS Data Hub where customers order products such as OS MasterMap Topography Layer. In this case, however, ​you are ordering the data selected in a particular recipe.​

There are options to order all of GB, select a predefined polygon or draw a custom one. Further options are:​

• File format (CSV or GPKG)​

• Whether updates are required​

• Date of the data (from the first day of OS NGD to today’s date)​

NOTE: There is currently no way to see the data that has been ordered ​until the data package is downloaded. If the area that is selected to be ordered does not contain any of the features selected in the recipe, the data file will be empty. For example, a recipe for Transporter Bridges that does not include Newport (Wales), Middlesbrough or Warrington, will result in ​an empty data file.​

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Links that may be useful:

OS NGD Documentation Platform | osngd

OS Data HubOrdnanceSurvey

OS Select+Build | OS productsOrdnance Survey

This content has been developed from what was originally a Lightning Talk PowerPoint slide set. These slides are available to PSGA members to view and download from the PSGA members area of the OS website