How do I create a vector of n consecutive numbers spaced at with an interval of m between each group, without using a for loop?

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Seb Long
Seb Long 2018-6-18
评论： Seb Long 2018-6-18
Is it possible to generate the following vector:
v=[1,2,3 ,6,7,8 ,11,12,13 ....]
without using a for loop? More generally, I would like to be able to generate groups of n consecutive numbers with an interval of m between each group (in the example n=3 and m=2).
Thank you in advance..

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Guillaume
Guillaume 2018-6-18
编辑：Guillaume 2018-6-18
numconsecutive = 3; %let's use better names than n, m, etc.
groupspacing = 2;
numgroups = 5;
v = reshape((1:numconsecutive)' + (0:numgroups-1)*(numconsecutive+groupspacing), 1, [])
This requires R2016b or later

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Honglei Chen
Honglei Chen 2018-6-18
编辑：Honglei Chen 2018-6-18
Here is one possible solution
N = 9;
n = 3;
m = 2;
x = buffer(1:N,n);
x = x+(0:size(x,2)-1)*m;
x(1:N).'
HTH

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