How to replace numbers in an array

Hello,

I have this vector A = [000000100000020000003]

I need to replace all zeros with the same values the comes each after zero, so the matrix will be

B = [111111111122222222222333333333333]

how to do this in Matlab ?

Regards

[Guillaume]

It is important to use correct notation.

"I have this vector A = [000000100000020000003]"

[000000100000020000003] is not a vector, it's a scalar. The [] do nothing at all here, and the above is equivalent to:

A = 100000020000003

Similarly, B = [111111111122222222222333333333333] is the same as

B = 111111111122222222222333333333333

However, because of that number is much larger than flintmax it can't be stored accurately as a double (or even as uint64), and will be stored as the nearest double:

B = 111111111122222215928577118961664  %closest double value to 111111111122222222222333333333333

Hopefully, your A is actually

A = [0 0 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 0 0 0 3]

as per Madhan's answer.

Answer 1

[madhan ravi]

A = [0 0 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 0 0 0 3]
A(A==0)=NaN;
B=fillmissing(A,'NEXT')

command window:

>> COMMUNITY

A =

  Columns 1 through 13

     0     0     0     0     0     0     1     0     0     0     0     0     0

  Columns 14 through 21

     2     0     0     0     0     0     0     3


B =

  Columns 1 through 13

     1     1     1     1     1     1     1     2     2     2     2     2     2

  Columns 14 through 21

     2     3     3     3     3     3     3     3

>> 

Note: The alignment is varied but it gives the exact result you want , see https://www.mathworks.com/help/matlab/release-notes.html?rntext=fillmissing&startrelease=R2012b&endrelease=R2018b&groupby=release&sortby=descending&searchHighlight=fillmissing released in 2016b.