How can I add a letter to a column of strings. For example i want all names in the column one to change to this Name T.

I have one column with many names. I want to add a T to every name. How can I do that?

Answer 1

[Walter Roberson]

%build an example table
sourceletters = 'A':'P';
FirstColumn = string( sourceletters(randi(numel(sourceletters), 5, 7)));
T = table(FirstColumn)

T = 5×1 table
    FirstColumn
    ___________

     "MJKGICH" 
     "CDHIOFN" 
     "PKNLFOI" 
     "LDOMKPF" 
     "MNCMDKK" 

%now do the work
T.TBefore = "T" + T.FirstColumn;
T.TAfter = T.FirstColumn + "T";

T

T = 5×3 table
    FirstColumn     TBefore        TAfter  
    ___________    __________    __________

     "MJKGICH"     "TMJKGICH"    "MJKGICHT"
     "CDHIOFN"     "TCDHIOFN"    "CDHIOFNT"
     "PKNLFOI"     "TPKNLFOI"    "PKNLFOIT"
     "LDOMKPF"     "TLDOMKPF"    "LDOMKPFT"
     "MNCMDKK"     "TMNCMDKK"    "MNCMDKKT"

[Jose Mendoza Garcia]

amazing thank you!!!!

[Jose Mendoza Garcia]

Quick question. Where can i find information like this. What mat lab page should i be using?

[Jose Mendoza Garcia]

I have two tables on matlab. The tables have an identical column 1 and variables. what i want to do is the following:

I want to combine row 1 of table 1 and row 1 of table two. Then i want to do a t test. The tables have 17 columns and i want to do the same for each one. Can you please help me?

[Walter Roberson]

String operations are described at https://www.mathworks.com/help/matlab/characters-and-strings.html

Table variable operations are described at https://www.mathworks.com/help/matlab/matlab_prog/add-and-delete-table-variables.html

Possibly you want innerjoin