Help with Vectors and For Loops and determining whether it's negative or positive?

Iterate through a vector A, using a for loop and create a new vector B, containing logical values. The new vector should contain true for positive values and false for all the other values. For example, if:

A = [-300 2 5 -63 4 0 -46]

Then the result should be

B = [false true true false true true false]

The program should prompt the user to enter the vector. The input vector entered by the user can be of ANY size

The program should output both the original vector and the vector with logical values.

So basically I need to allow the user to input a variable, then use a for loop to check each of the variables to see whether they are positive? v=input('Please input your vector: \n') that's as far as I got. Thanks ahead for your help!!

[Stephen23]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

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Answer 1

[Rick Rosson]

doc for
doc numel
doc size
docsearch('"logical indexing"')
doc false
doc true
docsearch('"preallocating arrays"')
doc disp
doc fprintf