How is a logical array evaluated as an if condition?

2017 3 17
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更新时间：2017 3 17
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Steven Lord
Steven Lord 2017-3-17

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From the documentation for the if keyword:
" if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true. An expression is true when its result is nonempty and contains only nonzero elements (logical or real numeric). Otherwise, the expression is false."
Your vector logical([0 0 1]) is nonempty, but it does not contain only nonzero elements. So the expression is false and the body of your if statement is not executed.

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