Drawing your own dataset
In addition to bringing in data from the the AURIN data sources, or importing your own data, you can also create your own geometry (vector) datasets within your session. These can be , for example, for creating potential point locations where you would like to measure the walkability around. Clicking on the Draw button calls up the geometry toolbar (shown below), which contains a number of features for creating geometry datasets. These are explained underneath the image, left to right.
- Draw Point: this option allows you to draw different points over your area, such as potential site locations for analysing walkability
- Draw Path: this option allows you to draw lines over your area, such as potential road corridors or street networks
- Draw Polygon: this option allows you to draw irregular polygons over your area, such as potential catchments or regions which don’t fit within the normal aggregation boundaries
- Draw Regular Polygon: this option allows you to draw a regular polygon – either a triangle, square, pentagon, hexagon or circle
- Draw Circle: this option allows you to draw a circular polygon on the map
- Draw Box: this option allows you to draw a rectangle of varying dimension son the map
- Modify Geometry: this option allows you to alter the vertices and edges of your polygons to change their shape
- Draw Hole: this option allows you to cut a hole out of your polygons, creating “islands and donuts”
- Select Geometry: this option allows you to select specific items from the ones that you have created
- Drag Geometry: this option allows you to move specific items around on the map
- Delete Selected: this option allows you to specific items that you have selected
- Delete all Geometries: this option allows you to delete all of the items that you have created
- Save Geometries as a dataset: this option allows you to add the dataset that you have created to your Data panel
- Close Geometry Editor: this closes the geometry toolbar
The example below illustrates the Draw Points functionality. Clicking on the Draw Points option allows for the editor to open, at which point you can create a series of points
After you have created the points you wish to insert into your session, if you click the Save geometries as dataset (second from the right) it will give you the option to name your dataset. Give your dataset a sensible name and press OK.
This will add the dataset as an entry in your Data panel. If you then close the Draw toolbar (button on the far right of the tool bar), this will cause the toolbar to close, and for your dataset to ‘disappear’ from the viewer. However, you will note that the dataset still exists in the Data panel. To show these points on your map, click the spanner next to the data entry, and select Display on Map (more on this tool bar in the final section of this page).
If you select the defaults and press ok, your geometry dataset will now appear in your viewer panel, and an entry will appear in the Visualisations panel.