Selecting data spatially

Overview

Data with geographic coordinates can be queried spatially.

Version: 1.21 (Dec 2019)


Usage:  Data upload and data export


To draw a polygon select the "Draw a polygon" icon on the left hand side of the map:

DiscoverPolygonSelection6

 

As the animation shows, click on the map defines the edges of a polygon, clicking on the first point finishes the polygon.

 Discover will warn you that your results are out of date:

ExpressionWarning

 This just means that any results from before may have changed as a result of the new polygon. To find the data within this polygon, click the query button (shortcut ctrl+enter). Sites that are included in the results are highlighted in blue:

PolygonResults

 

You can see in the above example, a number of wells are outside of the defined region. It is possible to edit an existing polygon to adjust the results by clicking on the "edit layers" icon.

You can also create your polygon based upon on the borders of a country.

Country-based Polygons

Available from via the flag icon on the map toolbar, predefined polygons representing the land borders of countries can be selected.

Country-based polygons that do not contain any well or non-well locations cannot be included as part of a query. However, as like any other polygon, country-based polygons can be edited and extended to include nearby locations. Country-based polygons are a useful way of selecting data spatially especially when location metadata may not have been fully populated.

The map tool also allows you to draw multiple polygons, for each polygon you draw a corresponding expression element is added to your query.