Area of Interest

Defining your Area of Interest (AOI)

The plugin interface has many different options for definining and customizing the AOI that you would like to use to search for imagery. Once one of the tools has been used to auto-generate the Active Coordinates, you have options to zoom to, copy or change the active coordinates to whichever AOI fits your use case the best.

area_of_interest.png

Once you have drawn, chosen an extent, or otherwise defined an AOI, the Active Coordinates (GeoJSON) field will automatically populate with the vertices of the AOI (in GeoJSON format):

area_of_interest_populated.png

Using layer or view extent

Setting an Extent - three options are available to you for setting the extent of the search area. These options allow you to define an AOI from the current map view extent, the extent of an active layer withint the map view, or the extent of all layers within the map view.

Drawing an AOI

Choosing a Draw tool - three options for shapes to draw in order to create a custom extent to use as the search area are available. You can draw a rectangle, polygon or circle to establish an AOI.

Selecting polygon(s) from your map workspace

The Selection menu allows you to select a single polygon or multiple polygons from an active vector layer in the map to create the extent for the search option.

Using GeoJSON coordinates

Once one of the three tools mentioned above is used to create, load or select an AOI, the information about that (or those) polygons is automatically generated in the GeoJSON Active Coordinates text box.

Alternatively, you may also paste a GeoJSON-formatted polygon type string directly into this box to create your AOI. If you do so, the pasted text must meet the following requirements:

* in GeoJSON format
* Is a polygon type
* in WGS 84 projection (latitude/longitude)
* 500 vertices or less

active_coords_geojson_required_tooltip.png

You can also directly load an AOI from a GeoJSON file that you have locally saved, without copying and pasting the file's contents into the Active Coordinates text box:

aoi_load_aoi_from_json_tooltip.png

Viewing your AOI

After you've defined your AOI using one or more of the methods above, the Active Coordinates text box will display the GeoJSON coordinates for your AOI. From here you have the option to zoom to your AOI, copy the coordinates or load a new AOI from a JSON file instead.

Zoom to AOI

This will zoom the map view to the extent of the AOI that is chosen:

aoi_zoom_to_aoi_tooltip.png

Copy AOI Coordinates

You can also copy to your clipboard the coordinates of the AOI that you chose:

aoi_copy_coordinates_to_slipboard_tooltip.png