Matlab shorthand for `for` with nested `if` (like Python's list comprehension)

问题

This question somehow addresses the problem, but not from the side I'm looking for.

I'd like to map an array into another, picking only the elements below a certain threshold. Basically a for loop, with an if conditional statement which checks the threshold.

I'm aware of the arrayfun function, but I don't know a way to put the conditional statement in it without defining a new function.

Is there a way to perform this task with an inline instruction?

回答1:

Maybe this is what you are looking for:

 A = (0:49) ./ 50; % Generate the initial array.
 B = A( A < 0.5 ); % Map an array into another, picking only the elements below a certain threshold.

来源：https://stackoverflow.com/questions/9993189/matlab-shorthand-for-for-with-nested-if-like-pythons-list-comprehension