[Help-glpk] glpk question

[Xiulin Zou]

I am trying to use the glpk package.
I ran the sample.c and it worked fine. But if I change
any of the element in array a to be 0.0, it gave me an
error as follows
lpx_load_mat: i = 1, j = 1; zero coefficient not
allowed


I could not understand that why it is not allowed to 
set any coefficient of the constraint matrix to be
0.0. Could you please offer some explanation?

I also tried to search for the string "zero
coefficient not allowed" from the c code. I could not
find the string. 

Your quick response is greatly appreciated.

Thanks in advance.

Xiulin

 

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