[GRASS-dev] Parallelization of RST modules of GRASS GIS

[Abhishek Shukla]

Is the matrix which is to be solved symmetric ?  I got this impression that
matrix is symmetric from the code of function IL_matrix_create.

I did not understand how it is symmetric.  Please clarify this.



> On Mon, Mar 15, 2010 at 8:31 PM, Helena Mitasova <hmitaso at unity.ncsu.edu>
wrote:

>  Do the system of linear equations first - it should help on several
levels
>  because it will also make it possible to run the interpolation with fewer
larger segments
>  and larger neighborhood reducing the instances when segments may be
visible
>  in the resulting grid.
>
>  Computing grid may be time consuming for certain values of tension - I
would have to look at it.
>  Checking the interpolating function at given points should be made
optional - it depends on how
>  many points there are - it could take as much time as computing the grid.
>
>  Finding points should not take too much time unless the spatial
distribution of points
>  is very heterogeneous, but I would have to look at it.
>
>  you can write me off-this list (maybe cc to GRASS dev list) as SoC list
is mostly
>  to organize GSoC (at least that is how I understand its purpose),
>
>  Helena
>
>
>  Helena Mitasova
>  Associate Professor
>  Department of Marine, Earth and Atmospheric Sciences
>  North Carolina State University
>  Raleigh, NC 27695
> hmitaso at unity.ncsu.edu
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