Sjoerd C. de Vries

 Wolfram Mathematica

Welcome! This is the main Mathematica chat room for mathematic...
Dec 23, 2022 20:32
But seems to work now. Perhaps just an outage of the servers that it was using
Dec 23, 2022 20:30
@user13892 13.2
Dec 21, 2022 22:31
Anyone experiencing issues with Wolfram's online data recently? It's off and on for me (mostly off). Entity["Country", "Netherlands"]["Population"], for instance, doesn't work for me at the moment on two computers at different locations.
Dec 7, 2021 19:37
I have the impression that many reference pages have not been updated correctly
Dec 7, 2021 19:01
@b3m2a1 that’s because it’s 13.0?
Dec 7, 2021 18:59
The link to the v13 features sometimes works, sometimes not. Try repeatedly.
Jun 23, 2021 21:56
@kirma I have a premier license, but apparently the cloudis not included anymore.
Jun 23, 2021 17:36
Anyone else lost access to their files in the Wolfram Cloud? I had seen a message about this but completely forgot about it and didn't copy them locally. So, now, unless I upgrade they are lost to me. Bummer.
Dec 18, 2020 09:20
@ChrisK I have the same experience. The integral example in Wolfram blog leads to an uninterpretable expression that cannot be edited and upon trying to do so crashes the frontend. On other occasions, such things lead to ctrl-$ not taking any new input.
Oct 23, 2020 21:19
This may be old news,but it's intriguing. I wonder whether Wolfram, Inc is trying this approach too.
Mar 7, 2020 15:43
@Szabolcs Doesn't the v12 update to GraphicsGrid/GraphicsColumn, or the ListPlot[...,PlotLayout->{"Column",2}] do that kind of plot aligning, or is this more sophisticated? (see also this)
Jan 29, 2020 10:00
@1010011010 Seems like a question that would be very well suited for the main site, and less for the chat.
Jun 2, 2019 09:23
@CarlLange I noticed that as well. It's in all of his recent posts.
Apr 18, 2019 20:35
Something of a bug in v12: Import can't import a CSV already opened in Excel. v11 was able to do this. Anyone else have this?
Apr 16, 2019 21:54
Happy I have it, unfortunately it's bedtime now...
Apr 16, 2019 21:53
@b3m2a1 The actual install took longer than the download :-)
Apr 16, 2019 21:53
@b3m2a1 150 Mbps
Apr 16, 2019 21:50
I just downloaded the whole thing without the Download Manager. Was there in 3 minutes or so
Apr 10, 2019 11:55
Stuff about LLVM compiling there in 12
Apr 10, 2019 11:55
FunctionCompileExportLibrary Built-in Symbol
FunctionCompileExportLibrary[file, func] exports a compiled version of func as a shared library suitable for external use
Apr 9, 2019 21:13
@CarlLange It's still 11.3.0 ATM
Sep 29, 2018 19:19
@J.M.issomewhatokay. I've had that many moons ago with an old laptop of mine. Appeared it was a failing inverter that could be replaced easily and cheaply with one I bought on eBay. See also: laptoprepair101.com/replace-screen-inverter-fix-backlight
Mar 11, 2018 10:37
Mar 11, 2018 10:36
This is in IPython:
Mar 11, 2018 10:34
inv() must necessarily make a copy as it changes the input, whereas transpose() still refers to the input, but has a different 'view' on it. This is a bit nasty as Python is still able to output both values, but Mathematica can't. I'm still tempted to say that's a bug.
Mar 11, 2018 10:32
Mar 11, 2018 10:32
@b3m2a1 Good call! Indeed, if you look at the below I can understand the reason for the message.
Mar 10, 2018 22:47
Anyway, have to go now. See you
Mar 10, 2018 22:42
Interestingly, np.transpose(np.transpose(a)) works just fine. So, it is not the transpose function itself
Mar 10, 2018 22:38
I'm using a reasonable recent Anaconda installation BTW
Mar 10, 2018 22:38
nope, doesn't work. Same error
Mar 10, 2018 22:36
both a and its transpose are of the same type, but only a can be returned
Mar 10, 2018 22:36
Mar 10, 2018 22:36
@b3m2a1 This shows the real problem:
Mar 10, 2018 22:32
Nah, this was an error of my own (one parenthesis missing)
Mar 10, 2018 22:30
@b3m2a1 Perhaps the following is of some use:
Mar 10, 2018 22:21
None
Mar 10, 2018 22:18
Mar 10, 2018 22:18
@b3m2a1 This is how it looks like at my side:
Mar 10, 2018 22:06
{CellFrame -> 1, CellMargins -> {{66, 10}, {8, 8}},
StyleKeyMapping -> {"Backspace" -> "Input"}, Evaluatable -> True,
CellGroupingRules -> "InputGrouping", StripStyleOnPaste -> True,
CellEvaluationFunction ->
FrontEnd`Private`ExternalLanguageCellEvaluationFunction,
CellEvaluationLanguage -> "Python",
CellFrameMargins -> {{4, 8}, {8, 8}},
CellFrameColor -> RGBColor[0.8549, 0.83137, 0.72549],
CellFrameLabels -> {{Cell[BoxData[PopupMenuBox[\!\(\*
DynamicBox[ToBoxes[
CurrentValue[
ParentCell[
EvaluationCell[]], CellEvaluationLanguage], StandardForm],
Mar 10, 2018 22:06
The return of your CurrentCalue line is:
Mar 10, 2018 22:05
{{1, 2, 3}, {4, 5, 6}}
Mar 10, 2018 22:05
just returns:
Mar 10, 2018 22:05
ExternalEvaluate["Python", "import numpy as \
np;a=np.array([[1,2,3],[4,5,6]]);a"]
Mar 10, 2018 21:58
@b3m2a1 That can't be it. It returns a just fine (which is also a numpy array)
Mar 10, 2018 21:10
However, it works in IPython.
 
May 22, 2019 19:20
You didn't raise the (x-mu)/sigma to the correct level. It should be at the level of the -1/2, not below it