Skip to main content

Work with polygons

Upgrade your surveying experience with localization, linework, survey codes, inverse & traverse calculations, background maps, WMS/WMTS layers, surfaces, and polygons

Learn more

This guide explains how to collect, create, and edit polygons in Emlid Flow.

Overview​

Emlid Flow allows you to collect polygons on the go and create ones from previously collected points and lines made up of a minimum of three points to define precise boundaries for land parcels, properties, and other areas and calculate their surface area and perimeter.

You can also import and export polygons in various formats, including DXF, SHP, KML, and CSV, to integrate with third-party software.

Collect polygons​

To collect a polygon, do the following:

  1. Start collecting a line.

    tip

    To learn more about collecting a line in Emlid Flow, check the Collect line guide.

  2. Collect at least three points of a line.

  3. Open Menu and select Close. The line will form a polygon.

  4. Tap the resulting polygon on the map to learn more about it:

    tip

    To convert a polygon to a simple line, tap Menu, select to edit it and uncheck the Closed line box.

You can now continue collecting another lines or polygons.

note

If your polygons share a side, make sure to collect two separate sets of points for each polygon. Otherwise, you won't be able to create two distinct polygons.

Stake out polygons​

To stake out a polygon, do the following:

  1. Select the polygon you want to stake out from the list of objects or on the map.

  2. Tap the Stake out button and navigate to the line.

  3. Move your Reach so that the navigation sections turn green, showing that your Reach is less than 2.5 cm (0.08 ft) away from the line you are staking out.

    note

    Ensure the pole isn't tilted if you're using Reach receiver model other than Reach RS3.

  4. Switch to the Along line mode. Watching the Offset plate, check if the line is set out according to the project.

tip

You can also perform stakeout with offset and chainage. To learn more about the Stakeout tool in Emlid Flow, its modes, and features, check out the Stake out lines guide.

Once you finished staking out the polygon, tap the next object in the map you want to stake out.

Create polygons from points​

You can create polygons from existing points, do as follows:

  1. In the list of objects in Emlid Flow, tap the Plus button to add line or polygon.

  2. Select at least 3 points on the map or from the list.

  3. Check the Closed line checkbox to create a polygon.

    tip

    You can also create a polygon by tapping the first point of the line.

note

If you create several polygons and some of them share a side, make sure to use two separate sets of points for each polygon. Otherwise, you won’t be able to create two distinct polygons.

Edit polygons​

To edit the polygon, do as follows:

  1. Select the polygon on the map or from the list of objects and tap Menu.

  2. Select to edit the polygon:

    • Uncheck the Closed line box if you want to convert it to a line.

    • Add or delete points by selecting them from the list or on the map.

    note

    If after deletion less than three points are left, the polygon will automatically turn into line.

    tip

    Learn more about editing options in the Edit lines guide.