There are probably multiple children, so accessing children.children and/or children.properties results in an understandable error. You can try to access individual children using indexing, for example: fig.hgS_070000.children(1).children(1).properties

I performed the following code:

fig.hgS_070000.children.children.properties

However, when ran I received the following error:

"Expected one output from a curly brace or dot indexing expression, but there were 2 results."

Is there a way to access this curly brace Information? I suspect this is an indexing issue however I have no idea how to access it.

Any help is greatly appreciated.

Not sure why you think it should not. Any MATLAB OOP class can define custom saveobj and loadobj methods to deal with the serialisation/deserialization process.

Not your question but maybe relevant to what you are doing: an undocumented (I think) feature of MATLAB is that constructors will accept a structure on input. So

s.Name='This is my figure';
h=figure(s);

will give you a figure with the specified Name and other properties set to their default values. All HG objects seem to comply with this. Add properties as required to s.

Any thoughts?

@Varshini – load() simply returns a Matlab struct. You can then process and convert this struct in your Matlab code in whichever way that you wish.

@Mariam – you can also use the -struct flag of the save function, if you want to modify the struct s directly without going through another temporary variable:

save('testFig.fig', '-struct', 's', '-mat');

That way the field names of the struct s are treated as the variable names to be saved to the file.

@Mariam – the save command save the data including the variable name as top-level struct field. You should keep the same top-level field-name as used by the FIG format (hgS_070000 or hgM_070000):

s = load('IPS.fig','-mat');
hgS_070000 = s.hgS_070000;

% modify hgS_070000

save('IPS.fig','hgS_070000','-mat');

I tried it without making any changes to ‘s’. Just loading it

s = load('C:\Users\Mariam\Desktop\fitted response\atlas masks\IPS.fig','-mat');

and re-saving it

save('testFig.fig','s','-mat'); % save modified d struct

However the effect remains it

open('testFig.fig')
??? Error using ==> open at 163
Invalid Figure file format.