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Topic: consecutive numbers
Replies: 8   Last Post: Jul 6, 2013 11:01 PM

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 dpb Posts: 9,850 Registered: 6/7/07
Re: consecutive numbers
Posted: Jul 6, 2013 11:01 PM

On 7/6/2013 8:29 PM, fmri wrote:
...

>> > >> x= [1 2 3 7 8 9 10 13 14 20 21 22 23 24 ];
>> > >> s=splitvec(d,'value'); % Bruno's SplitVec @ FEX

>> ...
...
>> OTOH the following should work for any vector for consecutive values...
>>

>> >> cnts=cellfun(@length,s(cellfun(@(x) all(x==1),s)))+1;
>> >> res=arrayfun(@(x,y) (repmat(y,1,x)), cnts,(1:length(cnts)) ...

>> ,'uniformoutput',false);
>> >> res=[res{:}]
...

> Hi dpb,
> thanks for this. Honestly, I was facing some problems while applying yr
> commands. I am still learning the basic functions and always get
> confused when I see cellfun and arrayfun ...

I'm still learning them meself having only had a release that contains
them <1 yr and not actively doing any technical work (my day job is
farming now). So, when I thought about the length vectors as a way I
took it as a challenge to use it... :)

BTW, it would be a little cleaner to get the final result above as

res=cell2mat(arrayfun(@(x,y) (repmat(y,1,x)), cnts,(1:length(cnts)), ...
'uniformoutput',false));

--

Date Subject Author
7/5/13 fmri
7/6/13 fmri
7/6/13 dpb
7/6/13 dpb
7/6/13 fmri
7/6/13 dpb
7/6/13 james bejon
7/6/13 dpb
7/6/13 fmri