Prev: Remember the Consolidator by John D'Errico?
Next: Why does this line of code take so long to execute?
From: John D'Errico on 16 Jun 2010 19:26
"Lisandro " <lisandro.quinones(a)gmail.com> wrote in message <hvbh89$1g3$1(a)fred.mathworks.com>...
> Hi all,
>
> I have 2 columns of 1000 points of data each that I wish to use as my x and y inputs for interp1, sadly my data is repetitive by definition and interp1 needs distinctive x data.
>
> I was looking in the Mathworks Community and came across the Consolidator by John D'Errico which seems to do the job. However, when I use it, it deletes/removes all of the repetitive data points just like the 'unique' function would do; it also orders the data in ascending order.
>
> Someone out there well versed with the Consolidator or with an alternate solution to my problem? I would like my data to retain its original order and the repetitive points NOT to be removed but just modified by a 0.0001 sum; i.e.:
>
> 600 to 600.0001
> 600 to 600.0002
> 600 to 600.0003
>
> Thank you!

Some years ago, I had a similar problem. In my case,
it reflected a problem with shapers in image processing.

One solution is to use a tool like the unrounding utility
I posted on the file exchange.

http://www.mathworks.com/matlabcentral/fileexchange/8719

X = floor((0:25)'.^2/25);
[X,unround(X)]
ans =
0 0
0 0.25
0 0.5
0 0.75
0 1
1 1.25
1 1.5
1 1.75
2 2
3 3
4 3.6667
4 4.3333
5 5
6 6
7 7
9 9
10 10
11 11
12 12
14 14
16 16
17 17
19 19
21 21
23 23
25 25

I don't know if this solves your problem or not,
but it is a pretty application of linear algebra. There
are certainly less high-tech solutions to be found.

John
 | 
Pages: 1
Prev: Remember the Consolidator by John D'Errico?
Next: Why does this line of code take so long to execute?