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

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Andrew Ardolino
Andrew Ardolino 2014-10-8
评论： Stephen23 2014-10-8
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!!
  1 个评论
Stephen23
Stephen23 2014-10-8
http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
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Rick Rosson
Rick Rosson 2014-10-8
编辑：Rick Rosson 2014-10-8
doc for
doc numel
doc size
docsearch('"logical indexing"')
doc false
doc true
docsearch('"preallocating arrays"')
doc disp
doc fprintf

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