Saving workspace variables into rows of a table

Hello,

I am running a user input function, where the user enters multiple codes in a text box. Each code has the form "04 11 70 32 24 6d 80", and the clock generates a date and time of this action. Everytime the user inputs the codes, they are made into a cell array named 'x' in the workspace (along with the clock data, named 'c'). How can I save each version of the codes cell array and clock into a table everytime they change?

Answer 1

[Shivam Singh]

Hello Aliki,

It is my understanding that you want to convert workspace variables into a table.

You may refer the following links for doing so:

• Convert cell array to table
• How can I concatenate tables vertically?

Answer 2

[Siddharth Bhutiya]

Since you are working with timestamped data it would be better to use timetables instead of tables. With timetable you can simply start with an empty timetable, and then use tt.Var(idx) syntax to keep adding values as shown below

>> tt = timetable

tt =

  0×0 empty timetable

>> x = {"aa bb cc"}

x =

  1×1 cell array

    {["aa bb cc"]}

>> c = datetime

c = 

  datetime

   05-Apr-2022 16:10:08

>> tt.Codes(c) = x

tt =

  timetable

            Time                Codes     
    ____________________    ______________

    05-Apr-2022 16:10:08    {["aa bb cc"]}

>> x = {"aa1 bb2 cc3"};
>> c = datetime;
>> tt.Codes(c) = x

tt =

  2×1 timetable

            Time                  Codes      
    ____________________    _________________

    05-Apr-2022 16:10:08    {["aa bb cc"   ]}
    05-Apr-2022 16:10:21    {["aa1 bb2 cc3"]}