How to add an orthomosaic to Emlid Flow

Emlid Flow Survey plan allows you to add and use WMTS and WMS layers. To get started, all you need is a URL from the web map service and a few manipulations in Emlid Flow 360. You can start working with layers in just a few steps. For more information, check these guides:

Don’t forget to log in to your account to get access to layers in Emlid Flow!

However, sometimes imported layers may be not enough, and you need to upload your own orthomosaic. For now, we have a workaround for you. You can host your own WMTS server to upload orthophotos to Emlid Flow:

  1. Go to Mapbox Studio and create an account there, it’s free.
  2. Create a new layer using the Streets template, upload your orthomosaic there, and obtain WMTS link.
  3. Add a new map layer using the obtained link in Emlid Flow 360 and access it in Emlid Flow.

The step-by-step process is shown in the screencast, check it in the video below:

Here’s how you can make it work with your own map layer sources!

And, as always, don’t forget to check our previous post which describes how to configure LoRa radio for RTK on Reach RS2+ in detail.


This is great!

Using a recent project ortho is much better than an old satellite image.


Does it work offline or do you have to have internet connection to view the ortho while surveying?

In my case, yes, my phone caches the tiles if I scroll around the ortho when I have a data connection, then they are still available later offline. That goes for satellite and even simple map layers. How much, and how long the tiles are retained, I don’t know.


A query ! Why does mapbox studio ask to enter a credit card? It is not free as the ad says

Hi Ryan,

Welcome to our community!

Dave is correct: you need Internet access to download the layers and add them to your projects. However, once you uploaded them, they are cached and still visible even offline. If you want the data to be the latest available, I recommend keeping your app frequently connected to the Internet.

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Hi Luis,

I’ve just checked the Mapbox Studio behavior and I worked with it without supplying any card info. The main thing to check is that you’re on the free tier and haven’t yet used up all of the free monthly options. Let me know how it goes for you.

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HELLO Polina! When creating the free account after indicating a username and password, it then takes me to a payment method. It will be that for these latitudes it is not free. If you can provide me with a link I will appreciate it. greetings Luis

Maybe you can try creating it via the PC through the desktop version? I did it with a PC and no card info appeared. Maybe this is the difference between the phone version and the PC version.

I tried from PC too and the same payment screen appears

You can create a geotiff file in QGIS that you can then use in Mapbox Studio to use in Emlid Flow.

It is quite simple.

  1. Open QGIS
  2. Set the project coordinate system to WGS 84 / Pseudo-Mercator (EPSG:3857)
  3. Load whatever layer you have available. In my example, I use a Google Satellite Hybrid layer.
  4. Then right-click on the layer and select EXPORT > SAVE AS and, in the dialog, select the FORMAT > GeoTiff.

Look at the screenshots to see which settings to apply. When done, click on OK and your geotiff file will be rendered. If you plan to use this file in the Mapbox workflow, you need to keep the resulting file under 400Mb. If your file comes out too large, simply redo the process and either select a smaller area, a smaller resolution, or both.