468 reputation
18
bio website dinamistics.com
location Sydney, Australia
age 47
visits member for 1 year
seen May 13 at 8:26
stats profile views 18

Jan
22
comment What is PointForm?
Hum, quite a number of symbols reported by ?*Form are internal. I bet they are generated internally by built-ins for the front-end.
Jan
12
comment Solve pair of recurrence relations
@lip1, have you had any progress on this?
Jan
8
comment Unique[] symbol not properly tracked
@rojo, I believe you should say "symbols created with Unique" instead of variables. The oddity is that symbols created with Symbol still work. So I bet Dynamic does more than a simple syntactic (but at runtime) resolution of dependency.
Jan
8
comment Unique[] symbol not properly tracked
@rojo, see comment above. I dared to post this and my guess as to why as answer ;-)
Jan
8
comment Coding mistake?
@halirutan, I think you forgot to mention the all important missing pattern n_ in LHS.
Jan
8
comment Unique[] symbol not properly tracked
Not sure if ok, but I attempted this With[{z = Unique[]}, Dynamic[w, Initialization :> (w = z)]] and it prints $nnn and if you update $nnn that in other cell it gets updated. It seems you need an intermediate regular symbol (z) attached, which later gets discarded by the scoping construct. Is this an answer?
Jan
6
comment Question on operator: // N
@badb, just let me add a link to the official operator precedence documentation. And as for a quick guide this one.
Dec
31
comment Given a time series of n samples with a known probability mass function, how can I predict the next sample?
"The purpose of the tool is to identify samples that don't fit the assumption of the chosen probability distribution." Hum, I believe you can measure the distance between the expected distribution and the empirical distribution, but I don't think you can pinpoint/blame specific samples.
Dec
20
comment Block attributes of Equal
@Mr.Wizard see what will be my last update about Plus
Dec
20
comment Block attributes of Equal
@Mr.Wizard, see Update 2! I bet there is a negative answer to your question "How can I get true blocking of a symbol such that it behaves generically within a scoping construct?" - there is not such thing, even for user-defined symbols.
Dec
20
comment Block attributes of Equal
Apologies, you guys were right @Mr.Wizard, there are observable differences between built-in symbols in Block as opposed to user defined. I wonder if there are more than the ones mentioned, or even if Block cannot fully clear a symbol in all areas of the Mathematica kernel - regardless if it is built-in or user-defined.
Dec
19
comment Block attributes of Equal
I thought the point of your question was if Equal had special behaviour in Block, that's what I understood. I edited my answer to clarify this. Besides, I tried the code without the x_H case and it didn't work, so I disagree with the general unpacking behaviour mentioned.
Dec
19
comment Mathematica returns fuzzy plot
let us continue this discussion in chat
Dec
19
comment Mathematica returns fuzzy plot
So, likelihood is an internal definition?
Dec
19
comment Mathematica returns fuzzy plot
Maybe you should do ?likelihood and see what Mathematica currently has for it. But even with the two x and x_ definitions in there, Plot works.
Dec
19
comment Mathematica returns fuzzy plot
what do you mean "the problem remains"? with a proper pattern in the LHS it works for me... I also use version 8, although on Mac.
Dec
1
comment Multiply (not divide!) Vectors in a List by Their Own Norm
hum, @cosmic-strider, according to the wikipedia article for a complex-normal z, |z| follows the Rayleigh distribution and the argument is uniform in [-Pi,Pi]. If wikipedia is right, here you go, both are available in Mathematica and should't be hard :)
Nov
30
comment Multiply (not divide!) Vectors in a List by Their Own Norm
I wonder if you could do this by using another distribution in the first place, not the uniform distribution.
Nov
28
comment How can I use “Save as (html)” and still render code as text?
@VF1, that approach crashes consistently. The best I can do is to convert to HTML as mentioned in my first edit, but still the special characters are not properly mapped.
Nov
28
comment How can I use “Save as (html)” and still render code as text?
@VF1, hum, not exactly as I have more options to supply and was trying "HTML" instead "XHTML". I will give it another go. If it works will be more than happy to accept answer. Tnx