How to set the boundaries?
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Ra Ga
am 18 Mär. 2018
Kommentiert: Ra Ga
am 18 Mär. 2018
Hello,
Please help me :)
I have a row with 0 and 1 (they are used for classification) and its indexes. I need to get just the boundaries for the interval of 0 or 1. How I can do it?
For example this is what I have:
targets=[0 0 0 1 1 1 0 0 1 1 0 0 0]
index= [0 1 2 3 4 5 6 7 8 9 10 11 12]
This is what I want to get:
targ= [0 1 0 1 0]
boundindex=[0 3 6 8 12]
Thanks!
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Akzeptierte Antwort
Image Analyst
am 18 Mär. 2018
Try this:
boundindex = [0, find(abs(diff(targets)))]
The only difference is that my array gives 10 as the final value, because 10 is where the final group of 0's starts. Not sure how you got 12. Why do you want 12 and how did you arrive at that value?
Not sure what the point of targ is or why it's needed so I didn't compute it.
4 Kommentare
Image Analyst
am 18 Mär. 2018
Try this:
targets=[0 0 0 1 1 1 0 0 1 1 0 0 0] % describe peaks
index= [0 15 20 35 45 50 60 75 80 99 101 111 120] % index of the peak
startingIndexes = [0, find(abs(diff(targets)))]
boundindex = index(startingIndexes+1)
targ = targets(startingIndexes+1)
Shows in command window:
boundindex =
0 35 60 80 101
targ =
0 1 0 1 0
just as you requested.
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Ra Ga
am 18 Mär. 2018
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