mat file cannot be opened in R2015a

Hi all

I have this mat file containing a DataSet.

I can open it in Matlab R2020a, R2020b and R2021a, but I cannot open it R2015a...

I tried googling the error, but I couldn't find a single hit on the RamDatasetStorage error :/

Any hint?

>> load('foo.mat')
Warning: Cannot load an object of class 'RamDatasetStorage':
Its class cannot be found.

Answer 1

[Cris LaPierre]

It appears you are using a class that is not supported in R2015a. For what it's worth, I can't open it in R2016a either. I don't have R2016b installed, but it opens in R2017a.

In R2016a, the error mentions the Simulink.SimulationData.Storage class. In the release notes, I do see some additions to the SimulinkData object in 16b and 17a.

[Luca Costantino]

Thanks for your answer

What can I do to fix it?

There is nothing fancy inside, it's just some x,y,z, ... data going to a bus and then to a to workspace block...

[Cris LaPierre]

I think the suggestions made in this post apply here. Basically, you need functionality that did not exist in MATLAB prior to 16b or 17a. The only way to get it is to update to one of those versions. The other alternative is to try to create the SimulationData without using the RamDatasetStorage class. However, this appears to be an under-the-hood use, so you might not be able to control that.