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1:17 AM
Does this make any sense?
StringPosition["", EndOfLine]
(* {{1, 0}} *)
 
1:28 AM
Using NDSolve for a system of DDEs (one term has [t+24]). I have defined all variables at at [t; t<= 0], yet I get: "Initial history needs to be specified for all variables for \
delay-differential equations." Any ideas what could be the problem?
 
1:43 AM
fixed!
 
 
7 hours later…
9:03 AM
@YvesKlett I must admit I'm a bit jealous about that. I spent more than a week or so tweaking my BVH importer, researching format documentation, building a somewhat useful package, etc and get 50 rep, but just mention buttocks and a Plot3D one-liner is suddenly worth 90.
2
 
@SjoerdC.deVries it really is not fair. Can you tweak for butt importing?
I posted a (really rough) DXF export for special cases once and got perhaps one upvote or so...
 
@YvesKlett Perhaps I can find some F/M activity-related BVH files somewhere to bump up my score ;-)
 
just revisited your post. Incredibly good work! You got my vote already though.
@SjoerdC.deVries to bum up your score, you mean ;-)
 
@YvesKlett bummer that
 
... and yes, I would be delighted to see that happen
(you getting more deserved rep, that is. Ah well, the other thing too)
 
 
2 hours later…
11:18 AM
@YvesKlett I did use it once! I don't remember if it helped or not though. But at least I Upvoted it :P
@rm-rf Why has it been removed? Can we know if anything is going on with Adrian? :^)
 
@Öskå Sorry, I can't divulge any specifics, but I'm glad the community has a very keen eye :)
 
And it's true that the butt thing is a bit crazy, 25k view for a question asking how to draw a butt. What's next? How to draw breasts? How to slap that bum? Soon we will end up with a full human being :o
@rm-rf So we can't know if we were right or not? :P Not even a tiny clue?
 
@Öskå @SjoerdC.deVries I might have had something to do with it :D
 
@rm-rf When I first edited the question I was like ermmm, no, I'm not going to change the title to "how can I draw a pair of buttocks", it's not going to be fine with mods
And you came.. :P
 
@Öskå I accidentally fat-fingerd and removed Sjoerd's msg
 
11:29 AM
Well, that's a good bump for Mathematica I guess :P
Wolfram is going to be happy :P
 
hehe
10.0.2 will now have AssData[] and ParametricAssPlot3D[]
 
@rm-rf wow this topic has already 25k views O_o
It seems it is really what people are looking for in internet... :)
 
@Kuba Admit it, that's the only reason why you are here, you knew that at some point one will draw a pair of buttocks :P
 
@Öskå I should have done this. Now there is no point for me to participate. I can't beat those answers :P
@Öskå now, this is code worth twitting :p
 
@Kuba You will gain lots of rep if you slap that butt!
That's a butt too right?
 
11:48 AM
@Öskå no comment :)
 
@Kuba If you apply your answer here on that butt after you manage to animate a slap you will get my +1 ;)
 
@Öskå I will try to find some time in the evening :)
 
@Öskå Likewise, when I made the first edit I thought the same!
 
@blochwave Appparently we were wrong :P But I rather like seeing rm doing it than myself :P
 
:-D
 
11:58 AM
@rm-rf you are a major WRI PR asset, aren´t you just!
 
12:40 PM
@Öskå then yours is one of two - thx!
 
1:33 PM
@YvesKlett I don't get it :P Why are you thanking me exactly? :P
 
@Öskå cause I got an upvote from you :D
 
Ooooooh, You "linked" your answer to the "Appparently we were wrong :P But I rather like seeing rm doing it than myself :P" so I didn't get it :P But my pleasure, I used it to transfer a sketch to SolidWorks if I remember correctly
 
2:29 PM
0
Q: symbolic integration conditional bug?

JazzmaniacI just ran across this: Assuming[x > 0, Integrate[1/t^2, {t, 1, x}]] gives the output ConditionalExpression[(-1 + x)/x, x > 1] which is clearly too restricted. The correct conditional should be x>0. The result doesn't evaluate at x=1/2, but Integrate[ 1/t^2, {t, 1, 1/2} ] correctly evaluate...

 
 
1 hour later…
3:51 PM
posted on November 26, 2014 by Rita Crook

The Imitation Game, a movie portraying Alan Turing’s life (who would have celebrated his 100th birthday on Mathematica‘s 23rd birthday—read our blog post), was released this week, which we’ve been looking forward to. Turing machines were one of the focal points of the movie, and we launched a prize in 2007 to determine whether the [...]

 
Carefull with the undocumented ReplaceAll operator form. Try ReplaceAll[_ :> (1 /. _ :> 2)]["x"]
(insisting)
Does this make any sense?
StringPosition["", EndOfLine]
(* {{1, 0}} *)
 
 
2 hours later…
6:08 PM
@VitaliyKaurov I wonder if those two side handles were also present in unmarried men
2
 
6:19 PM
@VitaliyKaurov Is this textured 3D model rendered in Mma too?
 
@Szabolcs nope - but it could be ;)
 
6:55 PM
@Rojo I would say that it makes sense. StringPosition returns a pair whose endpoint is inclusive. Since the result of the search here is the empty string, {1, 0} has zero as the inclusive end-point representation of its position. It is the same as StringPosition["", ""] (since EndOfLine will match EndOfString even in the absence of an explicit newline sequence).
@Rojo BTW, that ReplaceAll example not only returns the wrong result for me, but it also generates an internal self-test error whenever I hover over the expression. I guess that it why it is undocumented :)
 
7:07 PM
@WReach I see
Do you find reasonable that EndOfLine matches EndOfString?
 
8:03 PM
Could someone with a gmail account check the answer to this question? I can't reproduce the results on a Windows 7 (v9) system; however, I upvoted so I must have gotten it to work at some point in the past.
 
8:16 PM
@Rojo Well, there has been much debate about that over the years. The other choice, non-matching, was very common in early unix. The result was lots of shell scripts that didn't process the last line in a file if it was missing a newline -- a common construction for many text editors. The pendulum seems to have swung the other way in more recent tools. Not just the PCRE engine in MMA, but also Java and Javascript and probably most others. Reasonable? Yes. The only choice? No.
 
8:48 PM
@WReach Great, thanks
 
9:11 PM
@bobthechemist Are you around by any chance?
 
@halirutan yup for a short bit.
 
When I remember correctly, you did a lot of stuff with the RPi. I don't have a question about this but about something not too far away:
I'm currently programming my shutter logic. I mean the logic that lets me open and close the shutters of the windows.
(I don't know whether shutter is the preferred word to use here)
 
sweet!
shutter works just fine (although since it's not something we put on American houses anymore, you might get looked at funny) :)
 
@bobthechemist I'm using a Siemens Logo 8 which is programmed through its own IDE. My question is, are you aware of any websites where they have samples of AND/OR/XOR/Delay/... logics that are used for this?
It feels kind of weird to do this myself and I'm sure a lot of people have already done this.
The websites/how-tos don't need to use the Siemens stuff, but maybe I can look what others did and compare it to what I have.
 
@halirutan I'm a relative noob with automation/microcontrollers, and everything I've learned is from Adafruit. They do have some home automation discussions which may be relevant, but possibly a bit far from what you are trying to do.
 
9:21 PM
@bobthechemist I was hoping to find something on some SE site, but the only post I got was this
4
Q: Using electric motor to adjust blinds?

navnavSo I'm trying to do some insane home DIY with my room blinds. I'm trying to make them adjust (go up and down) automatically. Now for this, obviously, I will need a motor. The blinds I'm working with don't require much strength to pull down, but a fair bit to pull them up (using the little stri...

 
@halirutan Where are you in the project? Are you looking for hardware/motors to do the work or still thinking about how it can be done?
 
@bobthechemist Everything is set up. I have the blinds installed and they work. I have the push-buttons in each room and next week I get the Siemens automation. Til then I want to have a program I can use.
Since I have pushbuttons (not switches) and I want to push and the blinds should get closed/opened completely. Furthermore, I have already a "double-click" to close all blinds in one room (or one side of the house).
The simulation looks good so far :-)
 
that sounds like an awesome project,.
My wife has drawn the line on home-scale projects, as she fears the troubleshooting stage will affect her quality of life. Somehow, I don't blame her.
 
@bobthechemist I guess it will be awesome if you make a click combination in a room on a normal button and all windows get closed.
@bobthechemist We just moved and currently I have to open the blinds with a 220V wire manually.
Comfort and quality can only go upwards from here.
 
heh, sounds true enough. Do you plan on adding some SunTracking routine? You could have the shades automatically drop at sunset.
 
9:30 PM
@bobthechemist Yep, I guess I won't need it, but my dad talked me into it (he is the hardware guy and it was his idea to use a full automation for this)
 
Those father/son projects are always good opportunities to "over-engineer" a solution
 
Simulation videos resulting from recent questions empowered with finite element method improvements in v10 could unleash those half-assed... I mean full-buttocked features of Wolfram Language!
... and potentially get the East European anatomical education market mafia after you.
 

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