Cannot find RoadRunner installation

OS: Ubuntu 22.0405

OS Type: 64-bit

Graphics: Mesa Intel UHD Graphics (CML GT2)

Matlab version: 2024b

Problem description: I have installed all the Apps including Automotives, Automated Driving Toolbox, etc. I can see the icon of RoadRunner in my APPS tag, but when I hit it, Matlab shows the following popup window:

Answer 1

[Altaïr]

Hey @Rong,

The presence of the 'RoadRunner' icon in the 'Apps' tab indicates that the RoadRunner standalone application is installed. When trying to open RoadRunner by double-clicking the icon, MATLAB searches for the application in the default installation directories:

• Windows: C:\Program Files\RoadRunner R20NNx\bin\win64
• Linux, Ubuntu: /usr/local/RoadRunner_R20NNx/bin/glnxa64

Here, 'R20NNx' represents the release version. If the application isn't found in these directories, a 'Cannot find RoadRunner installation' error may occur. Here are three ways to resolve this issue:

1. The installation path can be specified when creating a ‘roadrunner’ object using the ‘roadrunner’ command.

rrApp = roadrunner(ProjectFolder=projectFolder, InstallationFolder=install_fol); 

In this case, 'install_fol' is the actual installation path.

2. Modify the default RoadRunner installation folder settings using the MATLAB settings function. To set a persistent default value for the 'InstallationFolder' property, adjust the 'PersonalValue':

s = settings; 
s.roadrunner.application.InstallationFolder.PersonalValue = install_fol; 

This value persists across multiple MATLAB sessions for an individual user.

3. A temporary default value can be assigned for the 'InstallationFolder' property, which persists only for the current MATLAB session:

s = settings; 
s.roadrunner.application.InstallationFolder.TemporaryValue = install_fol; 

More details on these methods can be found on this documentation page:

https://www.mathworks.com/help/releases/R2024b/driving/ref/roadrunner.html#mw_be3f57a7-c5da-49c9-ae77-ae021f9c9f4c

[Rong]

@Ashok Thank you for the answer. I've tried your methods, but they do not work. I've even tried re-installed Matlab in the default directory, but it still has the problem. Could it because of the version of Matlab, i.e., R2024R does not have RoadRunner? In the popup window, it actually asks me to select the folder of RoadRunner, but I cannot find it (or I don't know which one should be selected).

[Rong]

FYI. I do not have the RoadRunner under the directory that you mentioned, i.e., /usr/local/RoadRunner_R20NNx/bin/glnxa64. In fact, I have MATLAB folder under /usr/local. I guess it is because RoadRunner needs to be installed independently (?).