<https://lh3.googleusercontent.com/-3GiS2l7wbB0/T2gIvNq-7yI/AAAAAAAAABs/WBnS9jes304/s1600/xst2.jpg>
<https://lh4.googleusercontent.com/-6qZ6U_mJl2A/T2gIo4G0LJI/AAAAAAAAABg/l4ch4vmwkI0/s1600/xst1.jpg> Certainly. See the two images attached, one showing the basic idea how cross-stitching looks and is executed from the front, the other showing a well laid-out back (incidentally, the type of thing that I would need the solution for). As of installing solvers, I do not mind, but I truly don't know where to begin... P On Monday, March 19, 2012 11:22:10 PM UTC+1, Harald Schilly wrote: > > On Monday, March 19, 2012 4:10:18 PM UTC+1, quinyu wrote: >> >> I would like to know if it can be used to solve my problem as well. The >> problem at hand is cross-stitching.... > > > Hi, I've never heard of that before. Do you have a picture at hand what > this actually is? > I also only read half of your posting because I somehow lost it. > My gut feeling tells me that all those stitches can be represented in a 2d > array consisting of -1, 0 and 1 which represent "down", "nothing", "up". > All remaining things you tell us are probably linear constraints, or maybe > can be made to be (distances are not linear). Hence, this is a MILP and you > can use Sage's MixedIntegerLinearProgram class. You will also need to > install a solver for problems of a bigger size, like coin-or/cbc. > > H > -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
