.. _releasenotes_rana:

Rana Release Notes
--------------------


February 18th 2026
^^^^^^^^^^^^^^^^^^^^

Fixes
"""""""""""""""""""""""""

- Make clear we use binary method (IEC) for calculating file sizes (#3549)
- Draw define study area (#3601)


February 17th 2026
^^^^^^^^^^^^^^^^^^^^

Features
"""""""""""""""""""""""""

- Use Rana authentication in HCC frontends (#3427)
- Add study area search (#2960)
- Add support for styling of rasters (#3385)
- Add calculate floor level process (#3480)
- Processes to use 2025 friction and infiltration rasters as default (#3483)
- Improve digital elevation description (#3479)
- Minor improvements simulate historical rainfall events (#3492)
- Prepopulate code field based on project name (#3246) 
- Prepopulate file name when create study area (#3103)


Fixes
"""""""""""""""""""""""""

- Set correct size limit of scenarios (#3506)
- Multiple files drag and drop upload invalidation improvements (#3424)
- Broken URL param for tabs (#3546)
- File URLs missing correct Rana tabs data (#3546)
- Copy file link and processes description styling (#3469) (#3466)
- Select scenario use tanstack and cleanup useeffects (#3311)
- Alignment of login modal (#3347)


February 5th 2026
^^^^^^^^^^^^^^^^^^^^

Catalogue
"""""""""""""""""""""""""

- Added friction and infiltration maps for 2024 and 2025


January 28th 2026
^^^^^^^^^^^^^^^^^^^^

Processes 
"""""""""""""""""""""""""

- Add Copenhagen flashflood rainfall event of 2011 (#3356)

Catalogue
"""""""""""""""""""""""""

Added the following maps:

- Land cover: 2023, 2025
- Land use: 2023, 2025, 2021, 2020, 2019, 2018, < 2018
- Elevation: AHN2 WSS, AHN2 ruw, AHN3 WSS, AHN5AHN2 WSS


January 5th
^^^^^^^^^^^^

As of this day, Rana has taken a big step forward.

3Di has fully transitioned into Rana. This means you can run the most advanced hydrodynamic water analyses more easily than ever. In addition, the website has been renewed, the Rana Training Center is now open, and more releases are coming soon. 

**Hydrodynamic modelling in Rana**

3Di has transitioned into Rana, making the most advanced hydrodynamic analyses available through the platform. This step opens up hydrodynamic modelling to a wider audience and gives modellers more support than ever.

Existing 3Di users can log in to Rana with their current credentials. You will receive a separate email with your personal Rana organisation code, which is also required.

Through the Rana platform, Rana users can now build models in the browser, run scenarios, assess flood impacts, and analyse and share results. Using the Rana Catalogue, you collect the required data; Rana Processes guide your analysis; and with Rana Publications you share map outputs with others.

**New: Rana HCC and Rana Live**

In the familiar left-hand sidebar of the platform, you will now find two new features: Rana HCC and Rana Live.

In *Rana HCC*, you manage your own schematisations, models, API keys, and simulations, and monitor the progress of all simulations within your organisation. This gives you more control and ownership over your models and results.

*Rana Live* lets you start, follow, and adjust live interactive simulations. It is an effective way to quickly and collaboratively gain insight into the water system and the structure of your model.

**Rana Desktop Client**

The 3Di Modeller Interface has transitioned into the *Rana Desktop Client*. All plugins have been updated. Editing and result analysis work as you are used to, now in a renewed environment. The Models & Simulations workspace is fully integrated into the Rana plugin.

Especially for 3Di users, we have created a short video showing how Rana provides better support and more possibilities. 


.. only:: html

   .. raw:: html

      <iframe width="560" height="315"
              src="https://www.youtube.com/embed/IdSZFBpWII8"
              frameborder="0"
              allowfullscreen>
      </iframe>