Re: [Help-glpk] xBASE table support added to MathProg

[Ted Poe]

Andrew,

I followed these instructions and successfully compiled and tested
glpsol under WinXP using dev-cpp.  Thank you and xypron, too, for
extending MathProg and adding this new feature.  I look forward to
using it.

Ted


--- Andrew Makhorin <address@hidden> wrote:

> I have added xBASE table support to the GNU MathProg language.
> To make it working please replace file src/glpmpl05.c in glpk 4.26
> by a new version (see the attachment) and then rebuild the package as
> usual.
> 
> To read/write .dbf files in MathProg models the first argument passed
> to the table driver should be specified as "xBASE" and the second
> argument should contain corresponding file name. For the output table
> there should be the third argument specifying the table format in the
> form "FF...F", where F is either C(n), which specifies a character
> field of length n, or N(n[,p]), which specifies a numeric field of
> length n and precision p (by default p is 0). Below here is a simple
> example which illustrates creating and reading a .dbf file.
> 
>
------------------------------------------------------------------------
> table tab1{i in 1..10} OUT "xBASE" "foo.dbf" "N(5)N(10,4)C(1)C(10)":
>       2*i+1 ~ B, Uniform(-20,+20) ~ A, "?" ~ FOO, "[ " & i & " ]" ~
> C;
> 
> set S, dimen 4;
> 
> table tab2 IN "xBASE" "foo.dbf" : S <- [ B, C, RECNO, A ];
> 
> display S;
> 
> end;
>
------------------------------------------------------------------------
> 
> 
> Andrew Makhorin> _______________________________________________
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