Re: Importing a sparse matrix to Octave

[Chong Yidong]

"John W. Eaton" <address@hidden> writes:

>   # name: s
>   # type: sparse complex matrix
>   # nnz: 70
>   # rows: 10
>   # columns: 10
>   1 1 (0,1.145193428282681)
>   2 1 (0,0.5663270399606521)
>   3 1 (0,0.007270909230606313)
>   4 1 (0,0.1480797228543177)
>   5 1 (0,0.2478795113138578)
>   ...
>
> The first column is the row index, the second is the column index, and
> the third is the corresponding value (real,complex).  The number of
> elements must match the value of NNZ.  To load this file into Octave,
> use the load command.

Thanks.  However, this method doesn't seem to work properly:

# name: s
# type: sparse complex matrix
# nnz: 3
# rows: 10
# columns: 10
1 1 (0,1.14)
3 6 (0,0.56)
6 2 (0.1,0.0)

octave:1> load "foo.dat"
octave:2> s
s =

Compressed Column Sparse (rows = 10, cols = 10, nnz = 3)

  (1, 1) ->  0.00000 + 1.14000i
  (3, 2) ->  0.00000 + 0.56000i
  (6, 2) ->  0.10000 + 0.00000i

The second line seems to be assigned to the wrong entry.  Is this a bug?
I'm using Octave 3.0.1, as distributed by Ubuntu.