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Code for my breathing avatar here


You may contact me at: BelisariusForSO@gmail.com

But please don't email me with requests about Q&A. Post them in the site instead.

Infix should be used only where it is essential... like in "feliz año nuevo" @rm-rf


Aug
14
comment Measure perimeter of black edge in Mathematica
@Kuba Your machine is bewitched, for certain
Aug
14
comment Measure perimeter of black edge in Mathematica
With Mma 9.0 pro = EdgeDetect@Import@"http://i.stack.imgur.com/7jt0I.gif"; -828 Pi + (pro // ImageData // Flatten // Count[#, 1] &) // N gives me 14339 ... very near my own answer
Aug
14
comment Measure perimeter of black edge in Mathematica
@Kuba I deleted my previous comment. That isn't the reason. Still thinking.
Aug
14
comment Measure perimeter of black edge in Mathematica
@george2079 It's more than that. Take a look at the last edit
Aug
14
revised Measure perimeter of black edge in Mathematica
added 1035 characters in body
Aug
14
comment Measure perimeter of black edge in Mathematica
The exterior circle boundary should not be counted. Only black/white transitions
Aug
14
comment Understanding “IntensityData” coordinates
Welcome to Mathematica.SE! I suggest the following: 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign!
Aug
14
answered Measure perimeter of black edge in Mathematica
Aug
14
revised Understanding the computation of IntensityCentroid?
edited body
Aug
14
comment Understanding the computation of IntensityCentroid?
@SimonWoods You're right of course. The image coordinates are always a source of bugs. I shouldn't test with square images! Thanks.
Aug
14
comment Reverse after ImageData?
I think this is a very good topic for this question. Can you formulate an answer there (perhaps including the obvious transformation functions between both coordinate systems)?
Aug
14
answered Understanding the computation of IntensityCentroid?
Aug
14
reviewed Approve suggested edit on How to set precision and format labeled Slider in Manipulate?
Aug
13
comment A problem on generating convex hull
All your points are coplanar
Aug
13
revised A problem on generating convex hull
added 8 characters in body
Aug
13
comment How Do I Perform Simple Operations On The Elements of a Table?
@JoelMayer Easier here than in a peer reviewed paper :)
Aug
13
comment How Do I Perform Simple Operations On The Elements of a Table?
@Kuba list.Join[-#, 0 Quiet@Check[list[[4 ;; -4]], {}], #] &@{1, 1, 1}
Aug
13
revised How Do I Perform Simple Operations On The Elements of a Table?
added 118 characters in body
Aug
13
comment How Do I Perform Simple Operations On The Elements of a Table?
@JoelMayer Probably a new pair of batteries :). see edit
Aug
13
comment How Do I Perform Simple Operations On The Elements of a Table?
@Kuba I deleted it since it fails for lists shorter than 7 elements