selecting certain values from a list
6 views (last 30 days)
Show older comments
I have this list below (call it A), and i wish to find the last value of a group of numbers. if you look at the numbers, they are bunched together in groups (not always consecutively), and i only want the last number in each group.
A =
8
9
106
107
109
110
244
245
325
326
329
334
335
483
484
485
486
527
528
690
691
So the new list (call it B), should look like this..
B =
9
110
245
335
486
528
691
I was thinking of making a for loop (i=1:length(A)) and doing a 'find' to see if a number exists in between that number and +20 after it (each new group of numbers never exceeds beyond 20).
is this possible? thank you in advance
0 Comments
Accepted Answer
Paulo Silva
on 28 Jun 2011
M=[ 8 9 106 107 109 110 244 245 325 326 329 334 335 483 484 485 486 527 528 690 691]
d=diff(M); %find the diference between consecutive values
[M(d>1);M(end)] %get the values with diference bigger than 1
append M(end) because the last one is always the last from a group and the diference function doesn't catch it
6 Comments
Sean de Wolski
on 28 Jun 2011
OP: "I was thinking of making a for loop (i=1:length(A)) and doing a 'find' to see if a number exists in between that number and +20 after it (each new group of numbers never exceeds beyond 20)."
so basically anywhere there's a gap of more than 20 it fails.
More Answers (1)
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!