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Consecutive vector spliter

version 1.6 (3.83 KB) by

Partition an input vector into smaller series of subvectors of consecutive elements

4.86667
16 Ratings

9 Downloads

Updated

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It says all in the summary. Nothing fancy just a convenient tool for spitting vectors.

Comments and Ratings (18)

Clair

Clair (view profile)

Shabnam

Shabnam

Matt J

Matt J (view profile)

Finally got around to trying this. I like it a lot, but I don't understand how the COL input argument works. Clearer documentation on that with examples would help.

Greg

Greg (view profile)

Excellent. Thank you.

Xinyi Shen

This is a great function that I am looking for.
However, it would be more perfect if
1. the array can be unsorted.
2. the indices can be returned
For example, [s,i] = SplitVec([1 2 1 3 2 1])
where
s={[1 1 1],[2,2],[3]}
i={[1 3 6],[2,5],[4]}
I do not know if it is possible

Bruno Luong

Bruno Luong (view profile)

Monotonic

SplitVec(a, @(v) [0; diff(v(1:end-1)).*diff(v(2:end))<0])

OK ... I add the 'decrease' and 'increase' functions by:
case {'increase'}
fun = @(v) diff(v(:,1))<0;
case {'decrease'}
fun = @(v) diff(v(:,1))>0;

But, how to add functions for 'positive' and 'negative' values vector spliting?

Will be possible to generalize this function to split vector on monotonical parts using ismonotinic function (http://www.mathworks.com/matlabcentral/fileexchange/11637-ismonotonic)?

K

K (view profile)

Amro

Amro (view profile)

Aditya

Aditya (view profile)

Ingenious! Clearly explained and easy to follow. Thank you very much!

John D'Errico

John D'Errico (view profile)

As you would expect of all of Bruno's submissions, it does exactly what it says it will do. Superb documentation.

Tom Toner

Thanks a lot for such a great function!

Updates

1.6

New builtin outputs: blockID and subsetorder

1.5

fix the bug when 'loc' is required and when working down the columns of matrix

1.4

correct bug for empty array, group function
Add output types: 'firstval' 'lastval'

1.3

Correct minor bug

1.2

correct bug when function handle is passed in second input

1.1

multiple column grouping capability

MATLAB Release
MATLAB 7.8 (R2009a)

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