Incorrect Logical Condition Statement

Hi,

I have a variable (let's call it 'data') and dependent on whether the user is left ('L) or right ('R') footed I wish for the respective data to be called.

I.e. for if 'L' then I want ('data') to be: 'data_l'

If 'R' is selected then I want ('data') to be: 'data_r'

Essentially I wish to add in the respective 'l' or 'r' to the end of the name in accordance to whether the person is left or right sided.

Leg = 'L'; %change between L and R

if Leg == 'L' ;

LEG = 'l';

else Leg == 'R';

LEG = 'r';

end

Tables.knee_flex_LEG % would like LEG to change to 'l' or 'r' accordingly

Unrecognized table variable name 'knee_flex_LEG'.

I believe the if function is the one I need to use. However I am unsure how to add the option into the script

[KSSV]

Don't use

if Leg == 'L'

use

    if strcmp(Leg,'L')

Answer 1

[KSSV]

Leg = 'L';                                           %change between L and R
if strcmp(Leg,'L') ;
  LEG = 'l';
else strcmp(Leg,'R');
  LEG = 'r'; 
end
id = 'knee_flex_LEG'  ;
id = strrep(id,'LEG',LEG)

[Jake Bowd]

Hi KSSV,

This works great and thank you for that.

However, what would you recommend I do if for example it isn't just the 'knee_flex_LEG' variable and infact there's more i.e. also a 'knee_add_LEG' and 'knee_rot_LEG' variables.

If I am only concerned with the Right variables is there a way to apply 'r' ti the end of each variable?

[KSSV]

You can replace all the variables at once using strrep.

str{1} = "knee_add_LEG" ;
str{2} = "knee_rot_LEG" ; 
str = strrep(str,'Leg',LEG)

Answer 2

[Stephen23]

Leg = 'L'; %change between L and R
vnm = sprintf('knee_flex_%s',lower(Leg));
Tables.(vnm)

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html