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Kuba
Kuba
9:23 AM
I need to learn basics one more time :) help me
0
Q: Understanding evaluation and typesetting

Kuba Background So, one could be surprised by the fact that: Hold @ Grid[{{1, 2}}] (*or*) Hold @ Graphics @ Disk[] This issue and methods of prevention are discussed in Prevent graphics render inside held expression. I need further explanation though. Questions Recall that the renderi...

front-end evaluation boxes
 
Vitaliy Kaurov
Vitaliy Kaurov
Creating an Inception like intro logo animation
http://community.wolfram.com/groups/-/m/t/848646
 
Kuba
Kuba
@VitaliyKaurov Hi. Are you aware of that issue? I'm receiving e-mail with new posts in topics I've participated quite a long time before I can read them on community. So i can read a reply in e-mail but it isn't online when I follow the link.
Haven't checked how long the delay is.
 
Jacccy
Jacccy
9:56 AM
Hi you all, how can I change the corlor of only my error bars in the following code?

Needs["ErrorBarPlots`"]
ErrorListPlot[{{1, 2, 0.5}, {3, 4, 0.7}, {5, 6, 1}},
PlotRange -> All, Frame -> True, Axes -> False]
 
m0nhawk
m0nhawk
10:36 AM
@Jacccy Only by defining custom ErrorBarFunction.
 
 
1 hour later…
Jacccy
Jacccy
12:04 PM
@m0nhawk Thank you!
 
Szabolcs
Szabolcs
12:15 PM
Does anyone here use IGraph/M for anything?
If yes, was it ever an issue that it is not possible to pass empty graphs to functions that expect directed graphs?
That's because for empty graphs Mathematica does not distinguish between directed and undirected (or rather: empty graphs are both). The translation to igraph format treats empty graphs as directed.
There are certain rare cases when empty directed graphs are actually needed. For example, searching for empty induced subgraphs in a directed graph. Up to now I was thinking that it's just not worth bothering with this in practice, but now I'm not sure anymore.
I was considering introducing a symbol such as IGEmptyDirectedGraph which would translate to, well, an empty directed graph. I'm not happy about it though because the translation mechanism is already very complicated, with many different code paths for special cases, in an effort to get good performance ...
Any comments?
 
Vitaliy Kaurov
Vitaliy Kaurov
@Kuba yes unfortunately there is 15 - 40 min delay. we are fixing it now, refactoring some code and optimizing, not that easy.
 
Kuba
Kuba
@VitaliyKaurov ok, just wanted to report.
 
Vitaliy Kaurov
Vitaliy Kaurov
12:31 PM
Finding outliers in 2D and 3D numerical data
http://community.wolfram.com/groups/-/m/t/848906
 
 
2 hours later…
Kuba
Kuba
2:11 PM
Are there any objections agains using Messages as static strings management system for a Package? For example

MyPackageTooltips::theOneOnTheRigh = "This is really important information"

and so on, the advantage is that Messages are suppose to work automatically with languages so translation would be done easily like:

MyPackageTooltips::theOneOnTheRigh::Polish = "To jest bardzo ważna informacja"

And anyone with Polish setting would get that first.

So is there any reason why not to use it?
 
R. M.
R. M.
2:58 PM
@Kuba Not sure I understand the question... isn't this explicitly supported?
Oh, you mean using Messages for things other than warnings/error messages?
 
Kuba
Kuba
@R.M. Yes, like FEStringResources
but for custom package
 
R. M.
R. M.
@Kuba I dunno, throwing a message does things like increment message counters, send the info to some message channels/lists, etc. so I think it might be more trouble than it's worth.
Why not just save them in downvalues/associations and use $Language to pick out the right one?
 
Kuba
Kuba
@R.M. :: is shorter, but I don't insist, I wouldn't use Message itself, only MyPackageTooltips::theOneOnTheRigh::Polish to show that string or with StringExpression/Template in case of slots.
 
R. M.
R. M.
@Kuba Ah, in that case I think it should be fine, I think. This info is stored on the symbol itself, so shouldn't affect anything else (or can't think of any)
 
Kuba
Kuba
@R.M. Thanks :) will tell you if things stop working
 

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