[Coin-lpsolver] Best way to bring an instance into CLP?

[Lasse Kliemann]

* Message by -John J Forrest- from Fri 2008-01-18:
 
> If memory is an issue the most efficient way takes more effort but is 
> doable if you have a reasonable (over)estimate of numbers of rows, columns 
> and elements.  I have updated Clp/examples/addRows.cpp to create a model 
> from scratch.  The example matrix is built by column.  You could build by 
> row and then transpose before handing to model.
> 
> Hope the example is clear enough.
 
Hi John, thanks for the effort. The example is clear enough so that I can 
include it in my application. I will report on how much I could gain by 
using this way of defining the problem for CLP.

BTW, if the matrix only has entries 0 or 1, can this even be improved?


Lasse
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