MATLAB: Which is best :define variables as global or pass them as arguments

argumentsdefine variablesfaqglobal variables

Hello everyone, I would like to know which is best: To define variables global in main & function like global var1, var2 or pass then as arguments to function like [out1]=functionName(var1,var2)

Best Answer

Passing them as argument is better

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MATLAB: Xlsread input arguments

Sure, write the translation from whatever x,y are to the character form...it's not clear what they represent, however, but if they're character strings then all you're missing is the concatenation...

x='A';
y='B';
rnge=[x ':' y];
data=xlsread(FileName,rnge);

If they're numeric you'll have to use num2str or sprintf or similar to build an appropriate string but it can be anything that results in a valid range expression as a character string (a cellstr won't work).

MATLAB: Which one is faster? defining a variable as a global variable or as an input of function

global is slower. The location of the global variable must be searched at execution time when the "global" is encountered. The location of passed parameters is already known.

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MATLAB: Xlsread input arguments

MATLAB: Which one is faster? defining a variable as a global variable or as an input of function

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