Tips and tricks: Difference between revisions

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These same tricks are useful for reading and writing data files with unique names, etc.
These same tricks are useful for reading and writing data files with unique names, etc.


==Vectorizing Tricks===
==Vectorizing Tricks==


You can easily fill a vector with an index:
You can easily fill a vector with an index:
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     x = [1:n];
     x = [1:n];
 
This works for expressions on the index by wrapping the index in an expression:
This works for expressions on the index by wrapping the index in an expression:
     for i=1:n, x(i) = sin(2*pi*i*f/r); end
     for i=1:n, x(i) = sin(2*pi*i*f/r); end
   
 
     x = sin(2*pi*[1:n]*f/r);
     x = sin(2*pi*[1:n]*f/r);


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