Trying to add a Row to a nested table

I have been playing with data storage and was playing with a crypto API to try and figure out a good data storage method. I have a table that has tables within it it for each individual line item and am having trouble figureing out how to append a new row to each of the individual tables inside the overall table.

basically, what I want is to add a new row to each table such that the next iteration of the table each of those tables would be 2X26 tables instead of the 1X26 tables shown below.

To test this out im just trying to append each table with a duplicate of the row that exists in the file.

Ive attached the test matrix. Any help would be appreciated.

[Stephen23]

"Trying to add a Row to a table within a cell"

What cell array? Your data consists of tables nested inside a table:

S = load('CryptoData.mat');
C = S.Out

C = 100×1 table
                         T     
                     __________

    bitcoin          1×26 table
    ethereum         1×26 table
    tether           1×26 table
    binancecoin      1×26 table
    usd-coin         1×26 table
    ripple           1×26 table
    binance-usd      1×26 table
    cardano          1×26 table
    solana           1×26 table
    dogecoin         1×26 table
    polkadot         1×26 table
    matic-network    1×26 table
    shiba-inu        1×26 table
    staked-ether     1×26 table
    dai              1×26 table
    tron             1×26 table

I doubt that your approach is a good use of tables. Most likely you should use one table and add a column/variable that specifies the crypto name, then use the various inbuilt tools for grouping and processing data:

https://www.mathworks.com/help/matlab/ref/splitapply.html#bux1l61

[Xymbu]

This doesnt seem like it would solve the problem. This is essentially a 3d table one for the crypto name, another dimension for the variable entry, and the last one for the timestamp.

[Stephen23]

"This doesnt seem like it would solve the problem."

So far you have not stated what the problem is.

"This is essentially a 3d table one for the crypto name, another dimension for the variable entry, and the last one for the timestamp."

Which can be trivially represented in one table: each "dimension" is represented by one column/variable, the rest of the columns are whatever data you have. Do not make your data design more complex than it needs to be.

[Xymbu]

It's a 100x26xn table. it can't be done just by placing it into a single table and using the method you provided.

[dpb]

Not convinced. But it's too big to mess with as is...cut it down to a manageable size for development purposes and then show specifically what you're after that you think can't be done by flattening the table.

[Xymbu]

This is pretty much as simple as it gets. There are 100 currencies each with 26 metrics at discrete time steps. every iteration will add another set of the 26 metric values to each curreny. it can be tested on a single currency but that doesnt make the mechanics any simpiler.

I ended up doing it as nested structures instead of tables and connecting it to a cloud database. It works fine for anyone else seeing this that may have simliar questions.