problem with simple "flip" function

3 次查看（过去 30 天）
Jonathan Roy
Jonathan Roy 2015-2-5
评论： Steven Lord 2021-5-6
I try this simple exemple of flip function
Flip Column Vector A = [1;2;3]; B = flip(A) B =
3
2
1
and I get this error in lieu on B=.... !?
Undefined function 'flip' for input arguments of type 'double'.
I use R2013a

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采纳的回答

dpb
dpb 2015-2-5
The function isn't flip; they're separate functions fliplr and flipud for row/column vectors in particular.
  2 个评论
Geert
Geert 2015-2-5
the function flip does exist in R2013b...
dpb
dpb 2015-2-5
Well, OP must be earlier release then as it clearly isn't in his...

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更多回答（2 个）

Geert
Geert 2015-2-5
编辑：Geert 2015-2-5
I've just checked, the flip function has become available from version R2013b, it does not exist in R2013a.
You can use flipud instead:
A = [1;2;3]; B = flipud(A)
If you would have a row vector, you can use fliplr :
A = [1,2,3]; B = fliplr(A)
Hannah Igboke
Hannah Igboke 2021-5-6
  2 个评论
Hannah Igboke
Hannah Igboke 2021-5-6
How do I go about the question?? I need a guide.
Steven Lord
Steven Lord 2021-5-6
This looks like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.
If you aren't sure where to start because you're not familiar with how to write MATLAB code, I suggest you start with the MATLAB Onramp tutorial (https://www.mathworks.com/support/learn-with-matlab-tutorials.html) to quickly learn the essentials of MATLAB.
If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.

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