How to insert char to table?

I am trying to insert a char variable into the first column named 'Trip' of a Table titled 'Out2'. All the other columns contain numerical values, which appear just fine using

Out2(k,2)={varName}

However, when I try to insert variable filename an error appears.

I am writing the following code

Out2(k,1)= {filename};

and the following error appears:

Subscripted assignment dimension mismatch for table variable 'Trip'.

What is the correct way to insert char into a table?

Answer 1

[Muthu Annamalai]

If you are mismatching to the number of rows in your Table.

Try assigning a cell-array of strings to your Table out2, at the column 'Trip'. To do this use strsplit function along with fileread

Then when you do,

   new_values = strsplit(fileread('data.txt'));
   Out2.Trip = new_values;

However it may also be you only want to replace the first element of the column Trip, then you can do the following,

Out2.Trip(1) = fileread(filename);

HTH.

-Muthu

Answer 2

[Peter Perkins]

Emmanouil, it's pretty hard to answer this for sure without more info. But assuming that you have a table like this

>> out2 = table({'a'; 'bb'; 'ccc'},[1;2;3],'VariableNames',{'Trip' 'X'})
out2 = 
    Trip     X
    _____    _
    'a'      1
    'bb'     2
    'ccc'    3

and a string like this

>> filename = 'abcdefghij';
>> whos filename
  Name          Size            Bytes  Class    Attributes
  filename      1x10               20  char

then the best way to assign that string into an element of the Trip variable is like this:

>> out2.Trip{2} = filename
out2 = 
        Trip        X
    ____________    _
    'a'             1
    'abcdefghij'    2
    'ccc'           3

Notice that Trip is a cell array containing strings, and so the left-hand side of that assignment first picks out Trip, as out2.Trip, and then assigns into it using braces.

If Trip in your table is a char matrix (which isn't really a great way to store strings), then you'd do something like

out2.Trip(2,:) = filename

Hope this helps.