Wolfram Mathematica

12:40 AM

@PatrickStevens I can't seem to get your example to work in a replace

 {Integer[1]} /. {x_Integer?(Not@AtomQ@Unevaluated@#)} :> d[1]

halirutan

@William hmm..

{Integer[1]} /. {x_Integer?(Not@AtomQ@Unevaluated@# &)} :> d[1]

William

@halirutan Thanks, that does fix this one, this was the original issue but yes that does fix this {Integer[1]} /. {x_Integer?(Not@AtomQ)} :> d[1]

Michael Hale

@William Patrick used composition Not@*AtomQ instead of just application Not@AtomQ. That's why his doesn't need # and &.

Jacob Akkerboom

7:11 AM

@MichaelHale note that the result of a Composition does not hold its arguments and so it does not work with Unevaluated

@William try

Unevaluated[1 + 1] /.
 x_?(Function[Null, Not@AtomQ@Unevaluated@#, HoldAll]) -> 3

Good morning Kuba!

Kuba

@JacobAkkerboom Hi :) sorry for not answering yet to your mail!

:p

Jacob Akkerboom

Ah that's fine :)

I saw some nice pictures on your facebook

Are you doing good?

Kuba

@JacobAkkerboom me too :) thanks ;) Yes, I'm fine, I have overload of work, and after wedding I had to furnish my apartment so those were crazy months :)

Jacob Akkerboom

Ah, that sounds hectic. Do you feel like you leveled up again? :P

Kuba

@JacobAkkerboom Not because of the wedding, I would say that was natural. But I've assembled my kitchen, and that is something!

:p

@JacobAkkerboom btw, are you using IntelliJ?

Jacob Akkerboom

7:25 AM

@Kuba ha that sounds excellent. I agree weddings should feel less like work than assembling a kitchen :P.

I am not using IntelliJ

I think I heard you say you used it, but then quit because it was always busy and therefore slow or something?

Kuba

@JacobAkkerboom Yes, so I tried again and again I find it unintuitive and slow :P And I don't know/can't fint what to switch off to make it faster.

There is definitely to much stuff in background by default

Jacob Akkerboom

@Kuba well I think the most recent messages in the IntelliJ plugin chat (if you ignore my messages :P) were about this issue

hali: "Please go to Settings -> Editor -> Inpsections and under Mathematica turn off the "Multiplication through linebreak" inspection"

I have to go now!

@Kuba cu!

Kuba

@JacobAkkerboom Ok, have a nice day, and thanks ;)

Cya

Kuba

8:26 AM

@Szabolcs Hello, are you working on linux?

Szabolcs

8:46 AM

@Kuba Not usually, why?

Kuba

I was wondering what is the parent dir of MenuSetup.tr. On windows it matches $OperatingSystem while on Mac it is "Macintosh" while $~ gives MacOSX.

@Szabolcs

Szabolcs

@Kuba It's X.

Kuba

@Szabolcs any idea why

?

@Szabolcs Thanks ;)

Szabolcs

Because the graphics system on Linux is called X, I guess.

Kuba

@Szabolcs I see. Ok, thanks again.

Szabolcs

8:54 AM

But that's only for the default English menus, there's also localized ones for Chinese, Japanese, Spanish.

Kuba

@Szabolcs And there isn't any for Polish! Thanks for that note too.

m

Szabolcs

10:05 AM

@Kuba Do you know anything about image processing? I'm trying to segment a monkey brain into white matter and grey matter (Image3D) and I'm having a hard time ...

Kuba

@Szabolcs I don't think I know more than you :) Maybe in astronomical data processing. But I suppose the monkey is from Earth.

Szabolcs

@Kuba I thought once you mentioned working with brain data, but maybe it was someone else. :)

Kuba

@Szabolcs Yep, not me :)

kirma

11:00 AM

"I'm trying to segment a monkey brain into white matter and grey matter" ... mad scientist at work? :]

diabolical laughter, lightning flashes and thunder on a dark night

2

shrx

12:16 PM

@Kuba since you mentioned astronomy, what software (besides MMA) would you recommend for aligning (translation & rotation) and stacking wide-field night sky images?

blochwave

12:49 PM

@shrx ImageJ, or rather FIJI, has some neat plugins for stack alignment, have you tried those?

shrx

1:11 PM

@blochwave thanks, nice to see it supports 16-bit images.

blochwave

1:25 PM

@shrx, Yep, I use it all the time (microscopy images)

Wolfram Blog

2:23 PM

Wolfram Blog: Using the Wolfram Language in the Classroom: Civics

posted on October 09, 2015 by Rob Morris

I hope you’ve enjoyed the Wolfram Language in the Classroom series. Today is the fifth and final post in the series and I’ll be talking about introducing more data into civics and social studies classrooms. One of the great things about this lesson is that the data can be drawn from your location, giving it [...]

acl

4:56 PM

@belisariusisforth brilliant! Had a look at some of the papers during a quick coffee break. Excellent!

thanks

belisarius is forth

5:37 PM

@acl In particular I love the conclusion of her 30-pages paper "Quantum Mathematics in Relation to Quantum Physics" : Most of mathematics formulas and theory are as a result of physics’ research and development. In this paper we have agreed that quantum really agree and as well disagree to some theories given out by several people like Newton, Einstein and many. Quantum mathematics on a free particle and physics on a free particle are somehow similar and therefore they agree

J. M. is back.

@belisariusisforth Some of my neurons died while reading that sentence... :o

belisarius is forth

@J.M.isback. The article about her was "retired" from Wikipedia. I wonder if she's jobless now and spending her time anonymously posting dups on our site.

J. M. is back.

XD

acl

5:58 PM

@belisariusisforth But I mean, isn't it more likely that she's just pulling our collective leg?

I've looked at a few of those articles earlier. I can't imagine someone writing those seriously.

kirma

The quote above... has that "quantum" handwaving quality.

Like, "quantum mechanics proves there's afterlife" sort.

acl

I mean how does it happen? Someone notices Pauli matrices are unitary, then writes this plus some random quantum circuit diagrams in a paper in Word and claims that they've solved an open and long-standing problem?

J. M. is back.

@acl A troll? Always possible, yes.

acl

@J.M.isback. That's what I would have guessed

(@J.M.isback. welcome back :) )

@kirma well but IT DOES! THERE ARE MANY PARALLEL UNIVERSES etc

no?

kirma

:I

J. M. is back.

6:03 PM

@kirma Yes, only the hands are waves. The quanta, only sometimes. :)

kirma

Are hands hands, or waves? Physicists are confused, learn this small quantum trick - every woman falls for it!

acl

@kirma too late, you've been scooped by the above-mentioned author

kirma

:)

J. M. is back.

When BuzzFeed starts tackling quanta, that'd be a most interesting day...

acl

@kirma @belisariusisforth @J.M.isback. of course, nothing beats Tai's model

J. M. is back.

6:07 PM

@acl That's an established classic. :)

belisarius is forth

@acl Pure genius

acl

wherein the author discovers numerical integration and gets...

belisarius is forth

@acl The Tai model allows flexibility in experimental conditions, which means, in the case of the glucose-response curve, samples can be taken with differing time intervals and total area under the curve can still be determined with precision.

acl

...263 citations

belisarius is forth

impressive

acl

6:08 PM

@belisariusisforth when I think of how much work it took me to get so many I want to cry

J. M. is back.

May 2 '12 at 16:27, by rcollyer

I like this phrase: "The precision of Tai's model. Because Tai's model is based on the calculations of individual squares and triangles, its pre- cision is obviously absolute."

acl

@J.M.isback. ah yes

belisarius is forth

@acl You surely didn't consult your horoscope before choosing a career

acl

excellent observation by Dr. Tai there! All we need is enough triangles!

@belisariusisforth or my brain yes

dear Lord. The world is insane

belisarius is forth

@J.M.isback. lines are thinner and more precise

J. M. is back.

6:11 PM

@acl ...you really are only realizing this now? :)

kirma

Some writeups cause considerable pain. Thankfully one doesn't need to be so serious all the time; following link gave lots to talk at work recently:

nature.com/nature/journal/v226/n5248/abs/226869a0.html

belisarius is forth

But what I really love bout Dr. Tai's paper is that she names the model after herself. Quite a detail. That's preparing for posterity.

kirma

(Thanks to our junior mathematician Jenny!)

Much more a mathematician than me, really. :)

@belisariusisforth Always a sign of a great author...

belisarius is forth

@kirma Damn.Now I'll be obsessively checking my beard growth

kirma

Follow-ups in Nature were also pretty amusing. Sadly those are pre-Internet...

belisarius is forth

6:15 PM

@J.M.isback. Nope.She's a thief, not a troll. drmanahel.com

J. M. is back.

This paper is certainly enlightening. ;)

belisarius is forth

@J.M.isback. another classic, yes :)

kirma

@J.M.isback. Whaat? :)

rcollyer

@kirma Tai's model is more commonly referred to as the trapezoidal rule for integration. So, precise ... not precisely.

kirma

Yep. "Write in convincing words to prove you are right" is really an approach I can't do much more than despise.

Less hand-waves on equations. Even if those are just an another conjecture.

psimeson

8:23 PM

If have a data like this: `{{0.1, 0.499988, 0.5}, {0.3, 0.499966, 0.5}, {0.5, 0.499945,
0.5}, {0.7, 0.499925, 0.5}, {0.9, 0.499907, 0.5}, {1.1, 0.499889,
0.5}, {1.3, 0.499873, 0.5}, {1.5, 0.499857, 0.5}, {1.7, 0.499842,
0.5}, {1.9, 0.499829, 0.5}, {2.1, 0.499816, 0.5}, {2.3, 0.499803,
0.5}, {2.5, 0.499792, 0.5}, {2.7, 0.499781, 0.5}, {2.9, 0.49977,
0.499999}, {3.1, 0.499761, 0.499999}, {3.3, 0.499751,
0.499999}, {3.5, 0.499743, 0.499999}}` then how can I plot a graph where the second and third points are the function of the first point.. i.e. the x-axis is going to be 0.1,0.3,0.5.....20 and…

Michael Hale

8:33 PM

@psimeson ListPlot[{data[[All, {1, 2}]], data[[All, {1, 3}]]}]

psimeson

@MichaelHale Thanks!

robjohn

11:55 PM

@MichaelE2 That was indeed needed, but also Lighting->"Classic" was needed

@J.M.isback.: what is your current gravatar? It looks like a contour plot of something.

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