Thread Subject: Consecutive Numbers !

Hi -

If V is a col vector, I want H to be the number of highest
consecutive sequential count in V.

Example: If V=[22; 23; 24; 40; 44; 50; 51; 52; 53]
Then, since the highest consecutive count comes from
numbers 50,51,52 and 53,it means H=4.

Another example:
 If V=[6; 9; 14; 15; 16; 50; 58; 52; 53], then since the
highest consecutive count comes from 14,15,16, it means
H=3.

Thanks
al

alan dinno wrote:
> Hi -
>
> If V is a col vector, I want H to be the number of highest
> consecutive sequential count in V.
>
> Example: If V=[22; 23; 24; 40; 44; 50; 51; 52; 53]
> Then, since the highest consecutive count comes from
> numbers 50,51,52 and 53,it means H=4.
>
> Another example:
> If V=[6; 9; 14; 15; 16; 50; 58; 52; 53], then since the
> highest consecutive count comes from 14,15,16, it means
> H=3.

Didn't think about exact implementation but logic would be select values
of diff(V) == 1 as they're the adjacent integer locations (less one).

--

"alan dinno" <alan_dinno@hotmail.com> wrote in message <fkf1sr$a05
$1@fred.mathworks.com>...
> Hi -
>
> If V is a col vector, I want H to be the number of highest
> consecutive sequential count in V.
>
> Example: If V=[22; 23; 24; 40; 44; 50; 51; 52; 53]
> Then, since the highest consecutive count comes from
> numbers 50,51,52 and 53,it means H=4.
>
> Another example:
> If V=[6; 9; 14; 15; 16; 50; 58; 52; 53], then since the
> highest consecutive count comes from 14,15,16, it means
> H=3.
>
> Thanks
> al
-------
Try this:

 H = max(diff(find([1,diff(V)~=1,1])));

Roger Stafford

"Roger Stafford"
<ellieandrogerxyzzy@mindspring.com.invalid> wrote in
message <fkf5hg$jta$1@fred.mathworks.com>...
> "alan dinno" <alan_dinno@hotmail.com> wrote in message
<fkf1sr$a05
> $1@fred.mathworks.com>...
> > Hi -
> >
> > If V is a col vector, I want H to be the number of
highest
> > consecutive sequential count in V.
> >
> > Example: If V=[22; 23; 24; 40; 44; 50; 51; 52; 53]
> > Then, since the highest consecutive count comes from
> > numbers 50,51,52 and 53,it means H=4.
> >
> > Another example:
> > If V=[6; 9; 14; 15; 16; 50; 58; 52; 53], then since
the
> > highest consecutive count comes from 14,15,16, it
means
> > H=3.
> >
> > Thanks
> > al
> -------
> Try this:
>
> H = max(diff(find([1,diff(V)~=1,1])));
>
> Roger Stafford
>

It gives me the error message:

??? Error using ==> horzcat
All matrices on a row in the bracketed expression must
have the same number of rows.

al

"alan dinno" <alan_dinno@hotmail.com> wrote in message <fkf60b$an6
$1@fred.mathworks.com>...
> "Roger Stafford"
> <ellieandrogerxyzzy@mindspring.com.invalid> wrote in
> > Try this:
> > H = max(diff(find([1,diff(V)~=1,1])));
>
> It gives me the error message:
>
> ??? Error using ==> horzcat
> All matrices on a row in the bracketed expression must
> have the same number of rows.
>
> al
-----------
  My apologies. I forgot that your V is a column vector, not a row vector. For
a column vector use:

  H = max(diff(find([1;diff(V)~=1;1])));

Roger Stafford

"Roger Stafford"
<ellieandrogerxyzzy@mindspring.com.invalid> wrote in
message <fkf899$9gu$1@fred.mathworks.com>...
> "alan dinno" <alan_dinno@hotmail.com> wrote in message
<fkf60b$an6
> $1@fred.mathworks.com>...
> > "Roger Stafford"
> > <ellieandrogerxyzzy@mindspring.com.invalid> wrote in
> > > Try this:
> > > H = max(diff(find([1,diff(V)~=1,1])));
> >
> > It gives me the error message:
> >
> > ??? Error using ==> horzcat
> > All matrices on a row in the bracketed expression must
> > have the same number of rows.
> >
> > al
> -----------
> My apologies. I forgot that your V is a column
vector, not a row vector. For
> a column vector use:
>
> H = max(diff(find([1;diff(V)~=1;1])));
>
> Roger Stafford
>
>

Works nicely! Thanks, Roger!!
Alan

"alan dinno" <alan_dinno@hotmail.com> wrote in message
<fkf1sr$a05$1@fred.mathworks.com>...
> Hi -
>
> If V is a col vector, I want H to be the number of
highest
> consecutive sequential count in V.
>
> Example: If V=[22; 23; 24; 40; 44; 50; 51; 52; 53]
> Then, since the highest consecutive count comes from
> numbers 50,51,52 and 53,it means H=4.
>
> Another example:
> If V=[6; 9; 14; 15; 16; 50; 58; 52; 53], then since the
> highest consecutive count comes from 14,15,16, it means
> H=3.
>
> Thanks
> al
Hi rojar, this logic gives '1' when their is no sequence of
consicutive number.

"hemant " <swarnkar@mathworks.com> wrote in message <fkfts3$bku
$1@fred.mathworks.com>...

> Hi rojar, this logic gives '1' when their is no sequence of
> consicutive number.
---------
  Are you saying that answer is wrong, Hemant? If so, I would disagree. If there
exists a sequence of two consecutive numbers but none longer, the correct
answer would be 2. That is clear. With no consecutive sequences, which is
another way of saying that each element is a single "consecutive sequence", it is
more reasonable in my opinion to give an answer of 1 rather than 0.

  The one questionable aspect of this code is that it gives an answer of 1 even if
V is an empty sequence. One could correct that if desired with an appropriate
"if-else" statement.

Roger Stafford