MATLAB: Converting Variable Name to String but Keeping Data!

command windowconvertstringvariable

Hi Folks! I would like to print a variable, and obviously its data, to the command window after my script finishes running. My variable is a not at all descriptive because it is nice and short so it makes my code look cleaner. However, when I print to the command window, I would like to print this variable as a better name, but having it consist of the same data to show… Any ideas on how to do this?

Thanks, Sean

Best Answer

I’m not certain what you want, but fprintf or sprintf are possibilities:

a = rand;
asq = a^2;
fprintf('a_squared = %f\n', asq)

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Give the Live Editor a try in a new-ish release of MATLAB; I expect its auto-completion will behave more like you are hoping for.

MATLAB: Reassigning columns to a table

If you keep everything tables, you can use the VariableNames property to indicate which variables are being updated. MATLAB is able to align the variables by their names. See more on how ot access data in tables here.

% Create a table with 4 variables
SQ1 = (1:5)';
SQ2 = SQ1;
SQ3 = SQ1;
SQ4 = SQ1;
A = table(SQ1,SQ2,SQ3,SQ4)
A = 5x4 table
    SQ1    SQ2    SQ3    SQ4
    ___    ___    ___    ___

     1      1      1      1 
     2      2      2      2 
     3      3      3      3 
     4      4      4      4 
     5      5      5      5 
% Create table B from 2 variables from table A
B = A(:,["SQ2","SQ4"]);
% Modify B
B_corrected = flipud(B)
B_corrected = 5x2 table
    SQ2    SQ4
    ___    ___

     5      5 
     4      4 
     3      3 
     2      2 
     1      1 
% Use the variable names of B_corrected to replace the values in A 
A(:,B_corrected.Properties.VariableNames)=B_corrected
A = 5x4 table
    SQ1    SQ2    SQ3    SQ4
    ___    ___    ___    ___

     1      5      1      5 
     2      4      2      4 
     3      3      3      3 
     4      2      4      2 
     5      1      5      1

Best Answer

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MATLAB: Suggestion/question: User-friendly tab auto-completions

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