MATLAB: Interchange variable names and strings

stringsvariable names

How do I convert a string to a variable name (and vice versa)?

I want to read in a string, and use it as a variable name, such as when I load a *.mat, in which the variable names depend upon which program generated/saved the *.mat.

I can see it useful to convert a variable name to a string.

Best Answer

<http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

Consider using

S = load('YourMATFile.mat');
the_var_names = fieldnames(S);
second_var = S.(the_var_names{2});

You can slice, dice, trice, even julienne!

Related Solutions

MATLAB: How to clear all the variables except one before restarting the program

Here's a snippet to study:

a = 10 % Declare sample variables.
b = 33;
result = 20;
% Get the names of the variables.
vars = whos
varNames = {vars.name};
celldisp(varNames);
% Let's loop over names, keeping the variable called "result"
for k = length(varNames): -1 : 1
  fprintf('Checking %s\n', varNames{k});
  if strcmp(varNames{k}, 'result')
    continue;
  end
  fprintf('    Deleting %s\n', varNames{k});
  clear(varNames{k});
end
clear ('k', 'varNames', 'vars'); % Get rid of loop iterator and other temporary items.

MATLAB: Load .mat file from anyfolder

load C:\myFolder\mySubFolder\myMatFile.mat

variableName= 'myVarName';
matfilePath = 'C:\myFolder\mySubFolder\myMatFile.mat';
data = load(matfilePath);
% to access the variable
data.(variableName);

Best Answer

Related Solutions

MATLAB: How to clear all the variables except one before restarting the program

MATLAB: Load .mat file from anyfolder

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