structure arrays imported as cell arrays

[ntholling]

In demo_jsonlab_basic.m, lines 133-141, the demo creates a 3 element structure array, exports it to json, and then imports it back to a MATLAB variable (json2data). However, it does not work as intended. json2data is a cell array with three structures instead of a three-element structure array. It is easily transformed by:
json2data = cell2mat(json2data);
_assuming _ the structures all have the same fields. Unfortunately, I do not have the time to chase down the root cause of the issue, but I thought you should know.
Thanks for a very handy utility!
-Nathaniel

[fangq]

This is not a bug. The results are expected because savejson added a root to the struct array. If you want to generate a 3-element struct array, you should use the following code instead:

data2json=struct('name','Nexus Prime','rank',9);
data2json(2)=struct('name','Sentinel Prime','rank',9);
data2json(3)=struct('name','Optimus Prime','rank',9);
savejson('',data2json)
json2data=loadjson(ans,'SimplifyCell',1)

Feel free to reopen this issue if you find additional problems.

[ntholling]

Thank you, your comment answered the issue I raised. For anyone else browsing this issue, the difference was made not just with leaving the root of the savejson call blank, but changing the SimplifyCell setting to 1.

This is an excellent utility, and I appreciate your prompt attention.

-Nathaniel