CELL2MAT does not support cell arrays containing cell arrays or objects.

hello guys.Can you understand Chinese?The sentence in blue means that "CELL2MAT does not support cell arrays containing cell arrays or objects".I never see any error like this.I translated it into English by Google Translator.So it may be not accurate.Do anyone experience this error.Could you please tell me how to do?By the way,my MATLAB version is R2019b,the code is earlier.So i think whether the old version and the new version are incompatible.I think the code itself don't have grammatical errors.Thank you for your answer!

[Walter Roberson]

We will need to see the code.

[Berney Li]

The error is diagnosed by Simulink.The code attach to the modules.CELL2MAT is in "IEEE80211a_graphics.m" If you need more information I can send you all the files to you personally.

[Walter Roberson]

The problem appears to be at line 11

haxes = cell2mat(struct2cell(ax));

I would not have expected that line to ever work. It is wrong in multiple ways.

Replacement code:

if isstruct(ax)
    ax_cell = struct2cell(ax);
    haxes = vertcat(ax_cell{:});
else
    haxes = ax;
end

[Berney Li]

it just has a new error. it means"Non-scalar arrays of function handles are not allowed; use cell arrays instead."how could i do?

[Berney Li]

AND the error happens just when i open a figure file.if i don't open it the error won't happen.

[Walter Roberson]

Put in a line of code that asks it to celldisp(ax_cell) and show us the results

[Berney Li]

like this?

but it also has an error.

[Walter Roberson]

No, I mean like

if isstruct(ax)
    ax_cell = struct2cell(ax);
    cell_disp(ax_cell);
    haxes = vertcat(ax_cell{:});
else
    haxes = ax;
end

This is not expected to fix the problem: this is expected to display output that you will copy and paste here and that will help me diagnose the problem.

[Berney Li]

I followed it.It shows the property of ax_cell.

[Berney Li]

And it has 8 ax_cell.

[Berney Li]

Hello,i can't solve it until now.I think I don't have enough capicity to

cope with it,Could you please help me?All codes are aviliable except only one error I mentioned.All codes are attached.Only I opened,It happened an error.Hope your help.Thank you.

[Walter Roberson]

That model was designed for MATLAB R13SP1, which was from 2003. It is not surprising that it does not work in current releases.

Answer 1

[Guillaume]

Indeed cell2mat does not support converting a cell array containing objects into a matrix. It looks like your cell array contains axes handles. Prior to R2014b axes handles used to be plain numbers so indeed you could convert a cell array of axes handles to a matrix. From R2014b, axes handles are objects and the error would appear.

Without knowing the exact details of what is in your cell array (shape and size) it's not easy to tell you how to solve the problem. Hence why Walter asked you to run the celldisp, so we could see what's in there.

Assuming that each cell contains a single axes handle, or row vectors of axes handles, then:

axes_mat = [ax_cell{:}];

If the cells contain column vectors/of axes handles:

axes_mat = vertcat(ax_cell{:});

If they contain 2D or ND matrix, it will be more complicated.

edit: following the output of celldisp being shown:

Since the cell array contains scalar axes handles, any of the above would work.

[Walter Roberson]

Oh, good point about the handles being numeric before!