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Re: [Help-glpk] variable object and deletions
From: |
Yingjie Lan |
Subject: |
Re: [Help-glpk] variable object and deletions |
Date: |
Wed, 20 Jan 2010 16:44:16 -0800 (PST) |
> At any rate it appears that GLPK (at least when using the
> pre-solvers) uses indexes as row and column identifiers and
> not as absolute addresses.
>
Exactly. when you delete a variable, the variables that comes after this
variable will have their index reduced by one. For example:
you have four variables: 1, 2, 3, 4.
after you delete variable 2, you have: 1, 3, 4
but at this moment, index 2 should be assigned to var 3,
and index 3 to var 4.
- Re: [Help-glpk] glpk 4.42 release information, (continued)
- Re: [Help-glpk] glpk 4.42 release information, Andrew Makhorin, 2010/01/14
- Re: [Help-glpk] glpk 4.42 release information, Yingjie Lan, 2010/01/14
- [Help-glpk] sensitivity analysis, Andrew Makhorin, 2010/01/15
- Message not available
- [Help-glpk] Re: sensitivity analysis, Andrew Makhorin, 2010/01/15
- [Help-glpk] Re: sensitivity analysis, Yingjie Lan, 2010/01/15
- [Help-glpk] Re: sensitivity analysis, Andrew Makhorin, 2010/01/16
- [Help-glpk] Re: sensitivity analysis, Yingjie Lan, 2010/01/16
- [Help-glpk] API friendliness Re: sensitivity analysis, Yingjie Lan, 2010/01/19
- [Help-glpk] variable object and deletions, Yingjie Lan, 2010/01/19
- Re: [Help-glpk] variable object and deletions, Daniel Gustafson, 2010/01/20
- Re: [Help-glpk] variable object and deletions,
Yingjie Lan <=
- [Help-glpk] Re: API friendliness Re: sensitivity analysis, Andrew Makhorin, 2010/01/23
- [Help-glpk] Re: API friendliness Re: sensitivity analysis, Yingjie Lan, 2010/01/23
- [Help-glpk] Re: API friendliness Re: sensitivity analysis, Andrew Makhorin, 2010/01/24
- [Help-glpk] Re: API friendliness Re: sensitivity analysis, Yingjie Lan, 2010/01/24
Re: [Help-glpk] glpk 4.42 release information, Andrew Makhorin, 2010/01/14