Timeline for Determine the boundary points of a set of points [closed]
Current License: CC BY-SA 3.0
20 events
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| Nov 10, 2014 at 18:49 | history | edited | Ricardo Andrade | CC BY-SA 3.0 |
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| Nov 10, 2014 at 18:47 | history | rollback | Ricardo Andrade |
Rollback to Revision 3 - changed the tags back to a sensible choice
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| Nov 5, 2014 at 18:50 | history | rollback | janak |
Rollback to Revision 2
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| Nov 4, 2014 at 13:44 | review | Reopen votes | |||
| Nov 4, 2014 at 14:31 | |||||
| Nov 4, 2014 at 13:28 | history | edited | janak | CC BY-SA 3.0 |
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| Nov 4, 2014 at 13:27 | comment | added | janak | Thanks. I understood the point. I reconstructed my question. | |
| Nov 4, 2014 at 13:20 | history | edited | janak | CC BY-SA 3.0 |
added 684 characters in body
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| Nov 4, 2014 at 0:12 | history | edited | Ricardo Andrade | CC BY-SA 3.0 |
replaced inappropriate tags
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| Nov 3, 2014 at 20:24 | history | closed |
Andrés E. Caicedo GH from MO Ricardo Andrade Alexandre Eremenko Steven Sam |
Needs details or clarity | |
| Nov 3, 2014 at 20:08 | comment | added | Alex Degtyarev | Not good: if you don't require convexity or such, minimal area tends to $0$: just take a polygonal neighborhood of a tree. The reason why I keep asking is that, if you give a right definition, the answer would probably be obvious (at least, for a finite set). | |
| Nov 3, 2014 at 19:49 | history | edited | janak |
edited tags
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| Nov 3, 2014 at 19:24 | comment | added | janak | It is a polygon which embraces all the points, but has minimal area. | |
| Nov 3, 2014 at 19:12 | comment | added | Alex Degtyarev | OK, but what's the definition? Something that would make the red curve better than any other curve? | |
| Nov 3, 2014 at 19:07 | comment | added | janak | Suppose we plot the finite set of points on X-Y plane and suppose these points form a cluster. Then by boundary points of the set I mean the boundary point of this cluster of points. That is if we connect these boundary points with piecewise straight line then this graph will enclose all the other points. For example, i.sstatic.net/hwxSW.jpg here points on the red curve are the boundary points. | |
| Nov 3, 2014 at 17:47 | comment | added | Alex Degtyarev | What is the boundary of a finite set? | |
| Nov 3, 2014 at 17:46 | review | Close votes | |||
| Nov 3, 2014 at 20:24 | |||||
| Nov 3, 2014 at 17:36 | answer | added | Joseph O'Rourke | timeline score: 2 | |
| Nov 3, 2014 at 17:36 | answer | added | Igor Rivin | timeline score: 2 | |
| Nov 3, 2014 at 17:24 | review | First posts | |||
| Nov 3, 2014 at 17:52 | |||||
| Nov 3, 2014 at 17:23 | history | asked | janak | CC BY-SA 3.0 |
