Volume Viewer App doesn't recognize MxNxP matrices

Working with release R2021a, the Volume Viewer App recognized MxNxP matrices from the workspace and displayed them properly.

After update to R2021b, the same MxNxP matrices do not show up in the menu upon "Import Volume from workspace".

As an example, I tried to import my variable "fit", a 686x519x151 double matrix. For a check , I also loaded Matlab's own example 'load('spiralVol.mat');' from the Help Center into the workspace.

In release 2021a, both variables appear when choosing "Import Volume from workspace". However, in release 2021b, I cannot see both variables.

With the command "volshow" I can display the volumes also in release 2021b.

The attached images show first, the import menu window in release 2021a, the second the window in 2021b.

Any suggestion?

[Yazan]

I work with 2021a, so I cannot test that, but I'm guessing that the 3D image should be binary. Try that.

[Walter Roberson]

@Yazan

No, not usually. volumeViewer() is designed to handle 3D numeric arrays.

[Walter Roberson]

@magie

What happens if you pass in the array on the command line, such as

volumeViewer(fit)

Answer 1

[magie]

Dear all!

Thanks for the prompt anwers.

In the meantime I had the following situation:

Quickly after I posted my question, my computer shut down with Windows Blue screen. After restarting my PC, release R2021b was running the Volume Viewer App properly and the 'fit' variable was recognized and displayed as in release 2021a.

However , that brings me to a different question:

Since I have updated to 2021b I have frequent blue screen shut downs, I didn't experience before. Could it be that there is a general conflict of release 2021b with Windows 10? Has anyone experienced similar problems?

Answer 2

[Star Strider]

The BSOD problem could be Win 10. It’s not MATLAB, since I've had the same problem one one computer (desktop) while never on my laptop, running the same versions of Win 10 and MATLAB. The Windows Event Viewer has never indicated MATLAB was a problem

I believe that gaming-related apps (particularly Steam, perhaps others) are causing this problem, because that’s essentially the only thing my desktop (with) and laptop (without) don’t share. (They have different recent versions of Ryzen processors.) I had this problem on an earlier computer (desktop, earlier Ryzen version) as well.

Be sure all the drivers are current.

[magie]

Hi Star Strider!

No gaming-related apps on my laptop where I run Matlab.

I only noticed that the BSOD problem occured for the first time after I updated to R2021b.

Might be a different software responsible though since my laptop is administered by IT of our department who take care of all technical software (such as drivers) on my laptop. Logging in to my department automatically initiates remote processes which update my operating system. Hence, I never know which kind of additional technical software is updated and installed.