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08:41
@Kuba want to test something out for me? I finally finished polishing up my paclet server interface (posted here) and just want to make sure it even works at all on other machines.
It has so many dependencies on various folders and files that I can't be sure I got them all.
Nevermind. Already found a serious bug when trying it from the subpaclet (I developed it in my main toolchain paclet).
@b3m2a1 ok, let me know once you are done :)
09:05
@Kuba I'm gonna have to finish this up tomorrow. So many dependencies to clean up... I'll let you know when it's finally done.
09:15
@b3m2a1 ok, good luck
09:35
Hi everyone!
I have to plot a 3D surface from set of points {x,y,z}.
Can I use Graphics plot?
or Graphics3D?
@L.K. you can but it will be better to use ListSurfacePlot3D or ListPlot3D.
Thanks @Kuba but I will also need to give them some color. So thought of Graphics3D
@L.K. I'm encouraging you to hit F1, lookup those functions and take a look at Options section.
@Kuba For 2D(which you only helped me to get color lol, sometime back, I was grateful to you).
`Graphics[{ColorData["Rainbow"][#3], Point[{#1, #2}]} & @@@ dataToPlot,
Frame -> True, LabelStyle -> Directive[Large, Plain, 18],`
@L.K. this is a points cloud not a surface.
09:44
@Kuba Ooh sorry I have points. Yes
@L.K. so where is the color stored?
@Kuba If I understood you. I have some plots, where some values are colored differently if they are at specific locations. A finite system, so a finite matrix to describe the system. If I have states at the boundary then color them differently. This is the ides
@L.K. so color is based on `{x,y,z}` position?

Graphics3D[{myColoringFunction[#], Point[#]} & /@ dataToPlot]

Something like this I guess
@Kuba Yes, that is at least is the idea upto now.
I just need to replace
Graphics by Graphics3D
@L.K. sorry, I'm not following, you said you want 3D plot from {x,y,z} points.
I provided Graphics3D
10:00
@Kuba Yes previosly I was having only two points and coloring was third. But now I have three points and coloring will be forth
@L.K. "where some values are colored differently if they are at specific locations." and you said {x,y,z} values.

Now you say you have {x,y,z,t} and color based on t. That is different...
Otoh it is straightforward to modify your previous code, replace #3 with #4, add #3next to # #2 and use Graphics3D.
@Kuba I am sorry for my ignorance and unclarity.
@Kuba That sounds good and easy. Thnks a lot!
@L.K. don't say sorry, just focus. Let me know if something does not work. I'm encouragin you to lookup Slot and @@@ to understand what the code is doing.
@Kuba Thaks, sure. Let me go through that. I will get back to you, if face problem :)
Have a good day!!
@L.K. Have a nice day too, cya.
 
3 hours later…
13:25
If I have a 3D object in the notebook, such as Graph3D@RandomGraph[{10,20}], and save the notebook as PDF, the 3D graphics look much darker than they should. This happens only on Windows. Can anyone reproduce this?
@Kuba ^ ?
@Szabolcs correct
So now I can't export my notebook on OS X because it crashes due to out-of-memory (32-bit front end). I can't export on Windows because the output is incorrect. Let's try Linux, but I am not hopeful.
13:43
Wow, it worked!! I did not expect this of the Linux version.
13:55
@Szabolcs I have played around with IGraphM in the last week and I am very impressed! I hope you won't mind comments/feature requests from me in the future as I already have one: IGEdgeApply would be a useful function to have e.g. to use Rescale on the EdgeWeights as a whole.
@Sascha Can you clarify what that would do? BTW I'm in the process of releasing a new version. It will be available within an hour.
You mean transform the whole vector, not elements one by one?
IGEdgeMap[#&, EdgeWeight -> Rescale @* IGEdgeProp[EdgeWeight], g] works, but it is quite wordy for such a simple operation.
Yes
that is exactly what I mean
another example instead of Rescale would be (max-#)& where max is the largest weight.
IGEdgeApply might not be the right name though since what I want is not to apply a function Apply[f]@ someProperty but rather f@someProperty
@Szabolcs BTW if you are interested in what I am doing:
I use FindIndependentEdgeSet to find matches of produced samples that best fit together to reduce tolerances in a final product
In the above picture every blue line is a possible match between to samples, the line thickness indicates the goodness of the match and the color i.e. red which matches were selected
14:18
IGraph/M 0.3.93 is now released! Any feedback is welcome, as usual.
@Sascha Sounds interesting! There isn't any independent edge set functionality in IGraph/M yet, as I didn't need it. But requests are of course welcome! :)
@Szabolcs As far as I could test mathematica's build-in FindIndependentEdgeSet works reasonably well. FindMinimumCostFlow on the other hand is not very reliable.
I mostly use IGraphM for its utility functions e.g IGEdgeMap and friends
 
1 hour later…
15:45
I want to get "2017-11-29/20:30" from {"2017-11-29", "20:30"}
I use StringJoin[Insert[{"2017-11-29", "20:30"}, "/", 2]] now, Is there any better method?
@yode StringRiffle[{"2017-11-29", "20:30"}, "/"]
Thanks...
 
3 hours later…
19:08
@Kuba (or anyone else) if you wouldn't mind testing the system I built here I'd appreciate it.
19:19
posted on November 30, 2017 by Vitaliy Kaurov

When Does a Word Become a Word? “A shot of expresso, please.” “You mean ‘espresso,’ don’t you?” A baffled customer, a smug barista—media is abuzz with one version or another of this story. But the real question is not whether “expresso” is a correct spelling, but rather how spellings evolve and enter dictionaries. Lexicographers do [...]

 
2 hours later…
21:45
Has anyone tried to automate creating a certain number of maximally distinguishable colours, for plotting purposes?
Suppose I need 6 colours, as different from each other as possible. I have a nice colour palette, but it has 10 colours. It might be possible to increase the distinguishability by generating fewer (but this is not at all clear).

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