The MATLAB approach, these are all equivalent:
merged = [result1.values];
merged = cat(2,result1.values);
merged = horzcat(result1.values);
"Please note I tried vertcat and that doesn't work as there multiple fields side sub structures."
VERTCAT will not work anyway, as your nested structures (i.e. fields PULSES, PULSES_F, VALUES, CHARGEPULSE and DISCHARGEPULSE) mostly** have size 1xN with different N, so they cannot be concatenated vertically as you attempted. But of course they can be concatenated horizontally (as my code above shows).
The fields with DOUBLE data (TIME, POWER, SOC, T, F) all have sizes Nx1, for which of course you will need to concatenate them vertically:
merged = cat(1,result1.values);
merged = vertcat(result1.values);
You cannot just randomly guess which dimension to concatenate along, you need to concatenate depending on the sizes of the arrays that you are concatenating together.
** some are empty, size 0x0. I will check their concatenation behavior shortly.
