# Latest

**URL:** https://discourse.julialang.org/latest.md?page=1387

[Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md)

**Page:** 1388

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## [Installed GMT.jl package and GMT v6.1.1 for Windows 64 bit. How can I start working with GMT package?](https://discourse.julialang.org/t/installed-gmt-jl-package-and-gmt-v6-1-1-for-windows-64-bit-how-can-i-start-working-with-gmt-package/61356)

<div class="topic-metadata">

**Author:** [@shubh\_b](https://discourse.julialang.org/u/shubh_b)\
**Replies:** 6\
**Last updated:** [May 19, 2021, 5:26pm UTC](https://discourse.julialang.org/t/installed-gmt-jl-package-and-gmt-v6-1-1-for-windows-64-bit-how-can-i-start-working-with-gmt-package/61356 "2021-05-19T17:26:11Z")

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I installed GMT.jl package and installed GMT for 64 bit Windows. Added GMT to PATH also. From Windows command prompt I can run gmt, it is showing list of options: But in Julia, it cannot detect gmt, showing message: …

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## [Modify right margin in Pluto notebook](https://discourse.julialang.org/t/modify-right-margin-in-pluto-notebook/61452)

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**Author:** [@disberd](https://discourse.julialang.org/u/disberd)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 4:32pm UTC](https://discourse.julialang.org/t/modify-right-margin-in-pluto-notebook/61452 "2021-05-19T16:32:00Z")

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Hi, I wanted to modify the right margin of pluto notebook cells as if I increase the cell width like suggested in This other topic and then reduce the browser window size, the right margin makes my cell go out of the vi…

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## [Vcat multiple DataFrames](https://discourse.julialang.org/t/vcat-multiple-dataframes/61455)

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**Author:** [@AlexisRenchon](https://discourse.julialang.org/u/AlexisRenchon)\
**Replies:** 1\
**Last updated:** [May 19, 2021, 3:46pm UTC](https://discourse.julialang.org/t/vcat-multiple-dataframes/61455 "2021-05-19T15:46:24Z")

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I have a bunch of DataFrameRow in a Dict that I want to convert to a DataFrame julia\> RSM\_df\[:RSM\_77\] 13-element Vector{Any}: DataFrameRow Row │ datetime RSM\_Date\_IV RSM\_Exp\_Flux RSM\_Exp\_FluxCV …

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## [SparseMatrix or SArray, MArray?](https://discourse.julialang.org/t/sparsematrix-or-sarray-marray/61401)

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**Author:** [@hardy](https://discourse.julialang.org/u/hardy)\
**Replies:** 7\
**Last updated:** [May 19, 2021, 3:42pm UTC](https://discourse.julialang.org/t/sparsematrix-or-sarray-marray/61401 "2021-05-19T15:42:41Z")

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I’m just getting used to Julia and therefore have very basic questions: SparseMatrix I have a little sparse matrix (only 11 Rows). Since the number of entries for storage as SparseMatrixCSC must be known: Will such a…

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## [Copying cross-referenced values](https://discourse.julialang.org/t/copying-cross-referenced-values/61442)

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**Author:** [@Niall](https://discourse.julialang.org/u/Niall)\
**Replies:** 4\
**Last updated:** [May 19, 2021, 3:20pm UTC](https://discourse.julialang.org/t/copying-cross-referenced-values/61442 "2021-05-19T15:20:58Z")

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Hi, I have a rather newbie question. If I enter this code: vecvec = \[\[5\]\] doubled = \[vecvec;vecvec\] copied = deepcopy(doubled) println( "doubled: ", doubled) println( "copied: ", copied) copied\[1\]\[1\] = 7 println( "do…

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## [\`Char\` and \`broadcastable\`](https://discourse.julialang.org/t/char-and-broadcastable/61221)

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**Author:** [@matthias314](https://discourse.julialang.org/u/matthias314)\
**Replies:** 8\
**Last updated:** [May 19, 2021, 2:43pm UTC](https://discourse.julialang.org/t/char-and-broadcastable/61221 "2021-05-19T14:43:31Z")

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A related question: Is it intentional that broadcastable is not explicitly defined for Char in broadcast.jl? Instead the default method for iterables is used. String in contrast is treated as a scalar, as discussed above…

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## [Best Data Manipulation packages 2020-09 \[video\]](https://discourse.julialang.org/t/best-data-manipulation-packages-2020-09-video/46690)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 4\
**Last updated:** [May 19, 2021, 2:24pm UTC](https://discourse.julialang.org/t/best-data-manipulation-packages-2020-09-video/46690 "2021-05-19T14:24:11Z")

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According to me, basically this. Obvious, they can’t deal with larger-than-RAM data but that’s another story. DataFrames.jl (GitHub - JuliaData/DataFrames.jl: In-memory tabular data in Julia) DataFramesM…

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## [\[Video\] Best Julia packages for manipulating tabular (dataframe) data](https://discourse.julialang.org/t/video-best-julia-packages-for-manipulating-tabular-dataframe-data/61451)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 0\
**Last updated:** [May 19, 2021, 2:23pm UTC](https://discourse.julialang.org/t/video-best-julia-packages-for-manipulating-tabular-dataframe-data/61451 "2021-05-19T14:23:48Z")

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Took me more than 1 month to make it as my time is so piecemeal.

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## [Plotting two lines on one plot over the same x range but with different x arrays in Plots.jl](https://discourse.julialang.org/t/plotting-two-lines-on-one-plot-over-the-same-x-range-but-with-different-x-arrays-in-plots-jl/30198)

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**Author:** [@CPPhysics](https://discourse.julialang.org/u/CPPhysics)\
**Replies:** 9\
**Last updated:** [May 19, 2021, 1:55pm UTC](https://discourse.julialang.org/t/plotting-two-lines-on-one-plot-over-the-same-x-range-but-with-different-x-arrays-in-plots-jl/30198 "2021-05-19T13:55:47Z")

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I would like to plot two line plots on the same plot, however I have two sets of data and while for both sets the x domain range is the same (0,.25) the values which are paired with my data are different. Is there a way …

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## [How can I implement this equation?](https://discourse.julialang.org/t/how-can-i-implement-this-equation/61420)

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**Author:** [@assia855](https://discourse.julialang.org/u/assia855)\
**Replies:** 3\
**Last updated:** [May 19, 2021, 1:44pm UTC](https://discourse.julialang.org/t/how-can-i-implement-this-equation/61420 "2021-05-19T13:44:03Z")

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Hello Forks How can I implement P = A’\*D ? typeof(A)=LazyAlgebra.Composition{3,Tuple{LazyAlgebra.Inverse{LazyAlgebra.FFTs.FFTOperator{Float64,2,Complex{Float64},FFTW.rFFTWPlan{Float64,-1,false,2,UnitRange{Int64}},FFTW.…

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## [The Julia REPL: How clean environment variables. VSCODE](https://discourse.julialang.org/t/the-julia-repl-how-clean-environment-variables-vscode/59940)

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**Author:** [@Hermes](https://discourse.julialang.org/u/Hermes)\
**Replies:** 5\
**Last updated:** [May 19, 2021, 1:38pm UTC](https://discourse.julialang.org/t/the-julia-repl-how-clean-environment-variables-vscode/59940 "2021-05-19T13:38:52Z")

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How to clean, delete the environment variables initialized during the running of a script in REPL; to avoid conflicts when running another script with variables with the same names but different types. How would it be i…

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## [Complex number sort](https://discourse.julialang.org/t/complex-number-sort/61417)

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**Author:** [@cepheid](https://discourse.julialang.org/u/cepheid)\
**Replies:** 3\
**Last updated:** [May 19, 2021, 1:30pm UTC](https://discourse.julialang.org/t/complex-number-sort/61417 "2021-05-19T13:30:22Z")

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I want to sort the complex vector as the lexicographically order, that is first the real part from large to small, the same real part, image part from small to large. julia\> a = ComplexF64\[-0.05050274530206651 + 0.60138…

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## [Downloading all information from Ctrl-Shift-I](https://discourse.julialang.org/t/downloading-all-information-from-ctrl-shift-i/61430)

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**Author:** [@Nash](https://discourse.julialang.org/u/Nash)\
**Replies:** 4\
**Last updated:** [May 19, 2021, 12:37pm UTC](https://discourse.julialang.org/t/downloading-all-information-from-ctrl-shift-i/61430 "2021-05-19T12:37:36Z")

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To my dismay, I often find that the data I am after on a website disappears with the following line of code: using Gumbo using Cascadia page = parsehtml(read(download(url), String)) collected = string(page) Yet, whe…

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## [Why does Zygote Gradient not work on Polynomials.jl?](https://discourse.julialang.org/t/why-does-zygote-gradient-not-work-on-polynomials-jl/57031)

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**Author:** [@Allan\_Baker](https://discourse.julialang.org/u/Allan_Baker)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 12:10pm UTC](https://discourse.julialang.org/t/why-does-zygote-gradient-not-work-on-polynomials-jl/57031 "2021-05-19T12:10:55Z")

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What am I missing. Why does Zygote’s gradient not work on Polynomials.jl polynomial. That module even has a derivative function. New to this Zygote stuff. module testZygote using Zygote using Polynomials p=Polynomi…

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## [How to add our own julia module/package in atom](https://discourse.julialang.org/t/how-to-add-our-own-julia-module-package-in-atom/61432)

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**Author:** [@sarak](https://discourse.julialang.org/u/sarak)\
**Replies:** 0\
**Last updated:** [May 19, 2021, 11:23am UTC](https://discourse.julialang.org/t/how-to-add-our-own-julia-module-package-in-atom/61432 "2021-05-19T11:23:40Z")

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Hi, I am new to Julia and I have made a package. Now I want to use this package in a julia file but when I write “using my package name” I encounter the following error: ArgumentError: Package ActiveBrownianGen not fou…

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## [Convert tuple to array](https://discourse.julialang.org/t/convert-tuple-to-array/2147)

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**Author:** [@holocronweaver](https://discourse.julialang.org/u/holocronweaver)\
**Replies:** 14\
**Last updated:** [May 19, 2021, 11:12am UTC](https://discourse.julialang.org/t/convert-tuple-to-array/2147 "2021-05-19T11:12:46Z")

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Is there a way to quickly convert a tuple to an array? A common use case is when I want to perform calculations on size(my\_array), say dividing the size by half or other more complex array operations. Currently I expan…

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## [Debugging Threads.@spawn applied to Expr data](https://discourse.julialang.org/t/debugging-threads-spawn-applied-to-expr-data/61359)

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**Author:** [@ericsfraga](https://discourse.julialang.org/u/ericsfraga)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 10:39am UTC](https://discourse.julialang.org/t/debugging-threads-spawn-applied-to-expr-data/61359 "2021-05-19T10:39:10Z")

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I am using meta-programming combined with multi-threading. I am trying to @spawn an Expr expression which is evaluated, i.e. e = quote \[...\] end tmp = Threads.@spawn eval(e) If I @show tmp, sometimes it says Task (runn…

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## [Juno non-responsive after command is entered](https://discourse.julialang.org/t/juno-non-responsive-after-command-is-entered/60167)

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**Author:** [@Joao\_Barata](https://discourse.julialang.org/u/Joao_Barata)\
**Replies:** 5\
**Last updated:** [May 19, 2021, 9:43am UTC](https://discourse.julialang.org/t/juno-non-responsive-after-command-is-entered/60167 "2021-05-19T09:43:19Z")

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Hi, When I type 1+1 (or any other command) in the juno REPL, or run a command from the editor, the result is displayed and then Juno becomes non-responsive for about 3 seconds. Is anybody else getting this problem? Its …

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## [Fma's and poly eval](https://discourse.julialang.org/t/fmas-and-poly-eval/61421)

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**Author:** [@jarl](https://discourse.julialang.org/u/jarl)\
**Replies:** 4\
**Last updated:** [May 19, 2021, 9:42am UTC](https://discourse.julialang.org/t/fmas-and-poly-eval/61421 "2021-05-19T09:42:33Z")

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I want to evaluate a polynomial of degree 8. Two ways of doing this: @inline function standard\_eval(x) p = evalpoly(x, (0.16666666666666632, 0.04166666666666556, 0.008333333333401227, 0.00138888…

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## [How to make Jupter Notebook display installation progress updates when adding packages?](https://discourse.julialang.org/t/how-to-make-jupter-notebook-display-installation-progress-updates-when-adding-packages/61375)

<div class="topic-metadata">

**Author:** [@Michael\_Barmann](https://discourse.julialang.org/u/Michael_Barmann)\
**Replies:** 5\
**Last updated:** [May 18, 2021, 9:07pm UTC](https://discourse.julialang.org/t/how-to-make-jupter-notebook-display-installation-progress-updates-when-adding-packages/61375 "2021-05-18T21:07:56Z")

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I recently installed IJulia for Julia v1.6.1, and now when I add a package, e.g. Pkg.add("DataFrames"), I don’t get any updates on the installation progress; there’s no message or output whatsoever. When I add a package…

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## [The Julia Language is hiring a technical writer as part of Google Season of Docs 2021](https://discourse.julialang.org/t/the-julia-language-is-hiring-a-technical-writer-as-part-of-google-season-of-docs-2021/59806)

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**Author:** [@logankilpatrick](https://discourse.julialang.org/u/logankilpatrick)\
**Replies:** 12\
**Last updated:** [May 19, 2021, 8:17am UTC](https://discourse.julialang.org/t/the-julia-language-is-hiring-a-technical-writer-as-part-of-google-season-of-docs-2021/59806 "2021-05-19T08:17:09Z")

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The Julia Language is excited to share that we will be hiring a technical writer as part of Google Season of Docs 2021. This year’s program is different from previous years and does not operate like other Google Open Sou…

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## [Converting Julia arrays, views to NumPy arrays via PyCall](https://discourse.julialang.org/t/converting-julia-arrays-views-to-numpy-arrays-via-pycall/61186)

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**Author:** [@SCKnight](https://discourse.julialang.org/u/SCKnight)\
**Replies:** 7\
**Last updated:** [May 19, 2021, 7:08am UTC](https://discourse.julialang.org/t/converting-julia-arrays-views-to-numpy-arrays-via-pycall/61186 "2021-05-19T07:08:36Z")

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I am trying to make some Julia code work with Python, and I am having some trouble understanding why certain kind of Julia arrays are able to translate to NumPy arrays. A regular Julia Array seems to get translated just …

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## [When does exp(A) == exp.(A)?](https://discourse.julialang.org/t/when-does-exp-a-exp-a/61369)

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**Author:** [@dlfivefifty](https://discourse.julialang.org/u/dlfivefifty)\
**Replies:** 29\
**Last updated:** [May 19, 2021, 6:56am UTC](https://discourse.julialang.org/t/when-does-exp-a-exp-a/61369 "2021-05-19T06:56:54Z")

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Is it ever the case that exp(A) == exp.(A) apart from when A is 1x1?

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## [Types of threads](https://discourse.julialang.org/t/types-of-threads/61382)

<div class="topic-metadata">

**Author:** [@blake1024](https://discourse.julialang.org/u/blake1024)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 4:21am UTC](https://discourse.julialang.org/t/types-of-threads/61382 "2021-05-19T04:21:06Z")

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Related to your user manual. Many systems say they have threads but when you look into it you find it’s just cooperative threads (a single OS thread). Your manual states that you support threads but it doesn’t make it …

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## [Methods for vectors of sparse vs dense matrices](https://discourse.julialang.org/t/methods-for-vectors-of-sparse-vs-dense-matrices/61404)

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**Author:** [@gvdr](https://discourse.julialang.org/u/gvdr)\
**Replies:** 7\
**Last updated:** [May 19, 2021, 3:02am UTC](https://discourse.julialang.org/t/methods-for-vectors-of-sparse-vs-dense-matrices/61404 "2021-05-19T03:02:07Z")

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I’m writing a function which should have two methods, one for vectors of sparse matrices (SparseMatrixCSC) and one for vectors of dense matrices. I don’t want to pre/dicate about the nature of those matrices beyond the …

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## [Comparing two lists](https://discourse.julialang.org/t/comparing-two-lists/61049)

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**Author:** [@mjanun](https://discourse.julialang.org/u/mjanun)\
**Replies:** 17\
**Last updated:** [May 19, 2021, 2:23am UTC](https://discourse.julialang.org/t/comparing-two-lists/61049 "2021-05-19T02:23:28Z")

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I have two lists that I need to compare. The second list contains names of groups for the first list: using DataFrames list1 = DataFrame(ID=\["0001P:ABCD","0001R:ABCD","2324P:CDCL","2324R:CDCL","5666TB:GHLA","789789TSB:A…

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## [Markdown cells in Pluto](https://discourse.julialang.org/t/markdown-cells-in-pluto/60948)

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**Author:** [@Iagoba\_Apellaniz](https://discourse.julialang.org/u/Iagoba_Apellaniz)\
**Replies:** 9\
**Last updated:** [May 19, 2021, 1:09am UTC](https://discourse.julialang.org/t/markdown-cells-in-pluto/60948 "2021-05-19T01:09:25Z")

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Hello! I think this could be a nice feature: be able to make some cells md cells. The idea is the following: Click to button next to the “fold” button Then the code is wrapped by md"""\<your code\>""", as with Ctrl-M. …

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## [Julia master build failing with "static\_assert failed"](https://discourse.julialang.org/t/julia-master-build-failing-with-static-assert-failed/61384)

<div class="topic-metadata">

**Author:** [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 12:41am UTC](https://discourse.julialang.org/t/julia-master-build-failing-with-static-assert-failed/61384 "2021-05-19T00:41:47Z")

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I tried rebuilding my master branch today (on macOS 10.15.7) and it failed with: CC src/jltypes.o /............../julia/src/jltypes.c:2294:25: error: static\_assert failed due to requirement '25 == sizeof ((cha…

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## [Inverse with destination?](https://discourse.julialang.org/t/inverse-with-destination/2267)

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**Author:** [@Andrea\_Pagnani](https://discourse.julialang.org/u/Andrea_Pagnani)\
**Replies:** 35\
**Last updated:** [May 19, 2021, 12:03am UTC](https://discourse.julialang.org/t/inverse-with-destination/2267 "2021-05-19T00:03:34Z")

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Dear all, I might be wrong, but in the plethora of BLAS and LAPACK functions, I was not able to find a function of the type inv(dest, X) where X is the matrix to invert and dest is the destination. Any suggestion…

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## [\[ANN\] MaskArrays.jl](https://discourse.julialang.org/t/ann-maskarrays-jl/61326)

<div class="topic-metadata">

**Author:** [@cscherrer](https://discourse.julialang.org/u/cscherrer)\
**Replies:** 6\
**Last updated:** [May 18, 2021, 11:44pm UTC](https://discourse.julialang.org/t/ann-maskarrays-jl/61326 "2021-05-18T23:44:44Z")

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MaskArrays.jl is a small package for working with arrays containing missing values. It does this by expressing the array in four pieces: A “base array” with no missing values. For example, the base array for a Matrix{U…

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