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Re: [Help-glpk] Help with Error: [....] requires numeric data

From: glpk xypron
Subject: Re: [Help-glpk] Help with Error: [....] requires numeric data
Date: Tue, 30 Nov 2010 19:56:19 +0100

Hello Maria,

> saved it and closed it. Then I run again the 'make' command for
> building the glpk package. Is that enough?
Make sure that you are really using the newly compiled library.
Use 'sudo make install' for installation.

The default installation path is /usr/local/lib.
When you installed GLPK as part of your Linux distribution
the installation part of the distribution will be /usr/lib.
Uninstall the distribution package and including GLPK specific
dependencies before running 
sudo make install.

If this does not help you, please, provide the following information
to understand your problem:

Operating system.
Brand and version of the data base.
The CREATE with which the table was created.
The table IN command from your GLPK file.
The definition of the relevant sets and parameters from your GLPK file.

Best regards


-------- Original-Nachricht --------
> Datum: Mon, 29 Nov 2010 20:06:31 +0000
> Von: Maria Vasardani <address@hidden>
> An: address@hidden
> Betreff: [Help-glpk] Help with Error: [....] requires numeric data

> Dear all,I am encountering this error when running a file:  The
> [parameter_name] requires numeric data. I have asked the parameter to get 
> data from a
> MySQL table column.  I read from a similar message that I need to apply a
> certain patch:
> --- glpk-4.44/src/glpsql.c      2010-09-05 09:02:46.000000000 +0000
> > +++ glpk-4.44_NUM/src/glpsql.c  2010-09-05 09:05:53.000000000 +0000
> > @@ -1511,7 +1511,7 @@
> >             len = 255;
> >          strncpy(buf, (const char *) row[i-1], len);
> >          buf[len] = 0x00;
> > -         if (0 != (fields[i-1].flags & NUM_FLAG))
> > +         if (IS_NUM(fields[i-1].type))
> >          {  strspx(buf); /* remove spaces*/
> >             if (str2num(buf, &num) != 0)
> >             {  xprintf("'%s' cannot be converted to a number.\n", buf);
> But I am not really familiar with how to do this. I opened the
> glpl-4.44/src/glpsql.c file, found the appropriate lines, did the changes and 
> then
> saved it and closed it. Then I run again the 'make' command for building the
> glpk package. Is that enough? Because that did not seem to solve the
> problem. My apologies for the newbie questions, I am not familiar with how 
> someone
> applies patches to glpk. 
> Thank you in advance for all your help and patience. 
> Maria                                           

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