Cadcorp SIS

Accessing OS NGD data with OS NGD API – Features via Cadcorp SIS

Last updated 5 months ago

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Instructions

These instructions are based on Cadcorp SIS Desktop version 9.1.1668.

Once a new map has been set up, in the Home tab, click Add Overlay.

In the Overlay Types dialog:

In the OS (GB) Data Hub dialog:

In the OS Data Hub NGD API – Features Data Themes and Feature Types dialog:

Well-known ‘recipe’: Select a predefined recipe, if available.
Data Themes: Select your data themes.
Features: If necessary, use the editing tools (on the right) to delete feature types or to change the order in which they display in your SIS Workspace Definition (SWD). By default, all feature types within the selected data themes are available in the right panel.
Local cache: Select this option to store the data temporarily on your machine. If you save and reopen the SWD, the data will still be available as it is fetched from your local cache.
One-off import: Select this option to do a one-off import of the data. If you save and reopen the SWD, the data will not be available and you will need to re-import it. These imports have a larger file size.
Filtering: These settings are used in conjunction and define how much data is required for display. It is recommended that you always set a spatial filter and feature limit.
- Spatial: The Intersect with current view extent option limits the download to only selected features within the current window extent. You can also load features within a specific area of interest using the polygon feature to draw your area of interest on the map BEFORE opening the Add Overlay dialog.
- Maximum number of features: Limits the number of feature values downloaded to the number set. This limit is applied per feature within any filtered spatial area.
Click Finish.

The selected layer(s) will then display in the SIS Workspace Definition (SWD) and the data will display in the map area:

Instructions

These instructions are based on Cadcorp SIS Desktop version 9.1.1668.

Once a new map has been set up, in the Home tab, click Add Overlay.

In the Overlay Types dialog:

In the OS (GB) Data Hub dialog:

In the OS Data Hub NGD API – Features Data Themes and Feature Types dialog:

Well-known ‘recipe’: Select a predefined recipe, if available.
Data Themes: Select your data themes.
Features: If necessary, use the editing tools (on the right) to delete feature types or to change the order in which they display in your SIS Workspace Definition (SWD). By default, all feature types within the selected data themes are available in the right panel.
Local cache: Select this option to store the data temporarily on your machine. If you save and reopen the SWD, the data will still be available as it is fetched from your local cache.
One-off import: Select this option to do a one-off import of the data. If you save and reopen the SWD, the data will not be available and you will need to re-import it. These imports have a larger file size.
Filtering: These settings are used in conjunction and define how much data is required for display. It is recommended that you always set a spatial filter and feature limit.
- Spatial: The Intersect with current view extent option limits the download to only selected features within the current window extent. You can also load features within a specific area of interest using the polygon feature to draw your area of interest on the map BEFORE opening the Add Overlay dialog.
- Maximum number of features: Limits the number of feature values downloaded to the number set. This limit is applied per feature within any filtered spatial area.
Click Finish.