Using advanced AI methods and high-resolution imagery Scalgo has produced a detailed land cover map for all of Great Britain. The map is now available for all Scalgo Live users. For more details about how this map was produced and how to use it, we refer to the accompanying blog post.

The Scalgo Land Cover map distinguishes between 11 classes in 25 cm resolution. To produce nationwide maps, we rely on high-quality aerial imagery. In Great Britain, we partner with Bluesky International, to get access to the 12,5 cm imagery available via the Geospatial Commission's Aerial Photography of Great Britain (APGB) contract. 

Alongside the detailed land cover map available in Scalgo Live, you’ll also gain access to the high-quality imagery available via APGB inside Scalgo Live. Before diving into this exciting new data, we want to ensure you’re informed about data access and any potential fees, please see the accompanying blog post for details.

We have released a nationwide land cover map for France in 25 centimeter horizontal resolution, and with 11 distinct land cover classes. This is the most recent step in our ambitious mapping of land cover in all the countries that Scalgo Live covers.

The map is produced using advanced AI techniques and a powerful computation infrastructure. As input data to the automated mapping process we have used the aerial image BD Ortho, BD Topo and Registre Parcellaire Graphique (RPG) from the Institut National de l'Information Géographique et Forestière (IGN). You can read more about how the map was produced in the release announcement.

How to use the new map

The new map is available as a standalone layer in the "Land Cover" category in the library. It is also fully integrated into Scalgo Live and is, for instance, used to show aggregate land cover information for watershed queries. You can try it out inside Scalgo Live today.

With the new map it is now also possible to refine the Flash Flood Map in Scalgo Live in France by assigning runoff functions to each of the land cover classes or to groups of classes using the infiltration module. Check out this getting started video for a detailed description on how to include infiltration to Scalgo Live.

When editing a canvas it is often desirable to edit many attributes at once, for instance you may want to change text sizes or colors of many objects at the same time. This has been an oft-requested feature from many of our canvas users. This is now possible. You can select multiple objects directly on the map, or through the sidebar like shown in the video below.

When multiple objects are selected, most of the options relevant for the individual objects are available from the selection bar and when changing such an option (e.g. the fill color) all the objects for which this is relevant are updated immediately.

This also makes it easier to organize your canvas objects, as they can be easily moved into and out of groups in the right sidebar. You can also select many features and hide them all at once.

How does it work?

In the right sidebar you can use CTRL to toggle the selection of singular features in the list of canvas objects. You can SHIFT-click to select consecutive  features.

On the map itself CTRL-clicking toggles selection and CTRL-dragging makes a box that selects an entire region.

When a depression overflows, the water leaves the depression through a spill point. The Flash Flood Map and depression map can now show you the location of these spill points. This makes it easier to understand how flow paths connect with depressions, and how overflows affect the surrounding areas. The spill points can be added to both the depression map and the Flash Flood Map.

To activate the spill points In the depression map, enable the "Spill Points" under the depressions layer in the dock. For the Flash Flood Map, use the "Highlight Active Depression" option, accessible through the gear icon. When highlighting active depressions, the spill points of all inactive depressions (that is, the full depressions) will be displayed.

Naturally, the spill points are also available in workspaces. For older workspaces, please recompute the analysis in your workspace for the feature to be available.

DynamicFlood computations need information about the surface roughness for each of the land cover classes available in the Scalgo Live land cover map.  We use so-called Manning numbers to parameterize this. Today, we updated the Manning numbers for all countries where DynamicFlood is available, except Sweden which was recently updated independently. The new values reflect a generally more conservative approach to surface roughness.

The Mannings numbers can be seen in the surface roughness section of the documentation, but for your convenience we have replicated them below:

The values were chosen based on an evaluation and synthesis of relevant literature (Arcement, 1989, Papaioannou et al, 2018, HEC-RAS 2D User's Manual, N-V240 Vannhåndtering, MSB2260).

This change was also recorded in the DynamicFlood changelog.

How does this release affect your computations?

The new numbers will be applied to all new workspaces, created after the update. Workspaces created before the update will retain the previous numbers.

If you need to create a new workspace that uses the same numbers as an old workspace, you can import the Manning numbers from the old workspace (using the "+" icon under Select Manning in the Run hydrodynamic engine dialog).

Likewise, if you would like to update an old workspace to use the new numbers, you can import the numbers from a new workspace.

It is now possible to share your Workspaces and Modelspaces in a view-only mode where the spaces you share can not be modified by the people you share it with.  

We're introducing this change alongside a new user interface for sharing. Instead of going to your account dashboard,  you can now share your Workspaces and Modelspaces directly inside Scalgo Live. This new user interface also makes it easier to share Workspaces and Modelspaces with many people at the same time by simply inserting a list of email addresses.

A user with view-only access to a Workspace or Modelspace, has the following restrictions:

• Can not share the space with additional users.
  
• Can not duplicate the space.
• Workspaces: 
  • Can not create terrain edits or alter properties of existing edits.
  • Can not change runoff functions in the Flash Flood Map.
• Modelspaces: 
  • Can not change any event settings or add/remove layers to the Modelspace.
    

For more information about Workspace permission levels, please consult the relevant page in the documentation.

We have changed some important things around Core+ DynamicFlood in Sweden:

• Rain events now differ based on the region they are in. 
• We have updated the surface roughness parameters to match MSB recommendations.
• We updated the default maximum infiltration rate in sewered areas from 36 mm/hr to 21 mm/hr to align with sewer dimensioning practice in Sweden.

These changes only affect new workspaces, so you must create a new workspace for these changes to take effect. Your old workspaces remain unchanged.

For more information, please read the accompanying blog post (in Swedish) or check the Core+ DynamicFlood changelog.

Scalgo Live on saanut merkittävän päivityksen: rankkasadeanalyysit huomioivat nyt koneoppimisen avulla tuotetun maanpeitemallin ja pintamaalajien vaikutuksen veden imeytymiseen. Lisäksi kaupunkialueilla analyysit tarjoavat arvion hulevesiviemärien vaikutuksesta.

Tule mukaan webinaariin!

4. lokakuuta 2024 klo 10.00-11.00 Pietu Pankkonen, Suomen markkinapäällikkö, esittelee, miten veden imeytymisen huomioivat analyysit on tuotettu ja miten voit hyödyntää niitä työssäsi.

Rekisteröidy nyt

Lyhyt introvideo

Blogikirjoitus veden imeytymisestä: Uusi päivitys SCALGO Liveen - Veden imeytyminen nyt osana rankkasadeanalyysejä.

Today we have truly opened up a world of Scalgo Live. You can now access full Scalgo Live setups for all 12 countries where these are currently available, covering more than 10 million square kilometres. For all other regions, you will be able to upload your own data, making it easy to work in Scalgo Live anywhere in the world! 

We are not stopping here, we are always working on adding more countries to Scalgo Live. These will also be available to all users as they are released.

For more information about this big step for Scalgo Live, please see the accompanying blog post.

In Core+ DynamicFlood, the default rain events used in Norway are now local design rains based on rainfall statistics from the region the workspace is in, with climate factors available based on the recommendations from the authorities. For more information, read the accompanying blog post.

Furthermore, Core+ DynamicFlood users in all countries can now see the timestep of running simulations in real time and obtain an estimate of the model's completion time. Please read the blog post for more information about this new feature.