# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=559

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

**Page:** 560

---

## [\[ANN\] NOAAData.jl - Access NOAA Climate Daily & Monthly Data](https://discourse.julialang.org/t/ann-noaadata-jl-access-noaa-climate-daily-monthly-data/4288)

<div class="topic-metadata">

**Author:** [@pazzo83](https://discourse.julialang.org/u/pazzo83)\
**Replies:** 0\
**Last updated:** [June 15, 2017, 4:02pm UTC](https://discourse.julialang.org/t/ann-noaadata-jl-access-noaa-climate-daily-monthly-data/4288 "2017-06-15T16:02:36Z")

</div>

Just wanted to announce a small package I just released that wraps the NOAA climate API (Web Services API (version 2) Documentation | Climate Data Online (CDO) | National Climatic Data Center (NCDC)) called NOAAData.jl. …

---

## [Heatmap of a dataframe](https://discourse.julialang.org/t/heatmap-of-a-dataframe/4272)

<div class="topic-metadata">

**Author:** [@ko56](https://discourse.julialang.org/u/ko56)\
**Replies:** 12\
**Last updated:** [June 15, 2017, 5:43am UTC](https://discourse.julialang.org/t/heatmap-of-a-dataframe/4272 "2017-06-15T05:43:29Z")

</div>

It seems that StatPlots doesn’t support making a heatmap of an all-numeric dataframe. Would that be a reasonable addition to the package?

---

## [Board Game interface which library?](https://discourse.julialang.org/t/board-game-interface-which-library/4221)

<div class="topic-metadata">

**Author:** [@Foolius](https://discourse.julialang.org/u/Foolius)\
**Replies:** 7\
**Last updated:** [June 14, 2017, 8:35pm UTC](https://discourse.julialang.org/t/board-game-interface-which-library/4221 "2017-06-14T20:35:14Z")

</div>

I wan to program some kind of board game but I don’t know how to do the graphics. I want some simple mechanic to show unicode symbols at 2d-coordinates and process mouse and keyboard events. What I found so far are wrap…

---

## [Creating a macro for defining differential equation constraints in NLOptControl.jl](https://discourse.julialang.org/t/creating-a-macro-for-defining-differential-equation-constraints-in-nloptcontrol-jl/4023)

<div class="topic-metadata">

**Author:** [@huckl3b3rry87](https://discourse.julialang.org/u/huckl3b3rry87)\
**Replies:** 11\
**Last updated:** [June 14, 2017, 5:34pm UTC](https://discourse.julialang.org/t/creating-a-macro-for-defining-differential-equation-constraints-in-nloptcontrol-jl/4023 "2017-06-14T17:34:02Z")

</div>

@miles.lubin please correct me if I am wrong, but from what I understand from the docs and our previous discussions, JuMP.jl does not allow the user to programmatically create variables and use ReverseDiffSparse.jl. To …

---

## [How to get rid of scientific format numbers with Plots+pgfplots](https://discourse.julialang.org/t/how-to-get-rid-of-scientific-format-numbers-with-plots-pgfplots/4240)

<div class="topic-metadata">

**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 7\
**Last updated:** [June 14, 2017, 6:04am UTC](https://discourse.julialang.org/t/how-to-get-rid-of-scientific-format-numbers-with-plots-pgfplots/4240 "2017-06-14T06:04:40Z")

</div>

MWE: using Plots pgfplots() x = collect(linspace(0.01,0.5,100)) p = plot(histogram(x)) savefig(p, "/tmp/x.pdf") The 0.05 label on the x axis shows up as 5⋅10⁻², which messes up the alignment. This is a more serious pro…

---

## [Combining 3D scatter plot with a 3D heat map](https://discourse.julialang.org/t/combining-3d-scatter-plot-with-a-3d-heat-map/4250)

<div class="topic-metadata">

**Author:** [@jdnz](https://discourse.julialang.org/u/jdnz)\
**Replies:** 3\
**Last updated:** [June 13, 2017, 7:43pm UTC](https://discourse.julialang.org/t/combining-3d-scatter-plot-with-a-3d-heat-map/4250 "2017-06-13T19:43:47Z")

</div>

I am trying to create a 3D visualization of a laser passing through a cloud of atoms. I attempted to do this using the GLVisualize backend for Plots.jl in the following way: using GLVisualize, Plots glvisualize() x = li…

---

## [Serializing RemoteChannels](https://discourse.julialang.org/t/serializing-remotechannels/4249)

<div class="topic-metadata">

**Author:** [@iamed2](https://discourse.julialang.org/u/iamed2)\
**Replies:** 0\
**Last updated:** [June 13, 2017, 4:46pm UTC](https://discourse.julialang.org/t/serializing-remotechannels/4249 "2017-06-13T16:46:52Z")

</div>

Discussion continuing from here: https://github.com/JuliaLang/julia/issues/22341#issuecomment-308134991 Invenia is working on DaskDistributedDispatcher.jl. We are using DeferredFutures to store the results of computatio…

---

## [\[Mocha\] Where does libcudnn go on linux boxes?](https://discourse.julialang.org/t/mocha-where-does-libcudnn-go-on-linux-boxes/4181)

<div class="topic-metadata">

**Author:** [@Nectarineimp](https://discourse.julialang.org/u/Nectarineimp)\
**Replies:** 2\
**Last updated:** [June 13, 2017, 3:04pm UTC](https://discourse.julialang.org/t/mocha-where-does-libcudnn-go-on-linux-boxes/4181 "2017-06-13T15:04:57Z")

</div>

I am trying to use the Mocha package, and I’ve downloaded the Deep Neural Network cuda library from nVidia. I put a copy of it in /libs and another in ~/.julia/v0.5/Mocha/Deps. No luck running Pkg.test(“Mocha”). If I tur…

---

## [Should ForwardDiff.jl issue warnings at non-differentiable points?](https://discourse.julialang.org/t/should-forwarddiff-jl-issue-warnings-at-non-differentiable-points/4228)

<div class="topic-metadata">

**Author:** [@Dan](https://discourse.julialang.org/u/Dan)\
**Replies:** 12\
**Last updated:** [June 13, 2017, 2:15am UTC](https://discourse.julialang.org/t/should-forwarddiff-jl-issue-warnings-at-non-differentiable-points/4228 "2017-06-13T02:15:18Z")

</div>

The derivative of abs is discontinuous at zero. Currently ForwardDiff chooses the +1.0 derivative. Should this choice be done without a warning? In formal math, a new concept called the subgradient is defined to include…

---

## [How to add title to legend in Plots.jl?](https://discourse.julialang.org/t/how-to-add-title-to-legend-in-plots-jl/2018)

<div class="topic-metadata">

**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 16\
**Last updated:** [June 12, 2017, 9:32am UTC](https://discourse.julialang.org/t/how-to-add-title-to-legend-in-plots-jl/2018 "2017-06-12T09:32:56Z")

</div>

Is it possible? If yes, which backends support it?

---

## [BioJulia Package: BioSequences.jl](https://discourse.julialang.org/t/biojulia-package-biosequences-jl/4197)

<div class="topic-metadata">

**Author:** [@Ward9250](https://discourse.julialang.org/u/Ward9250)\
**Replies:** 1\
**Last updated:** [June 10, 2017, 4:58pm UTC](https://discourse.julialang.org/t/biojulia-package-biosequences-jl/4197 "2017-06-10T16:58:16Z")

</div>

I am pleased to announced v0.5.0 of BioSequences.jl is released. https://github.com/BioJulia/BioSequences.jl

---

## [SCSSolver in Convex and JuMP](https://discourse.julialang.org/t/scssolver-in-convex-and-jump/4171)

<div class="topic-metadata">

**Author:** [@mzaffalon](https://discourse.julialang.org/u/mzaffalon)\
**Replies:** 5\
**Last updated:** [June 10, 2017, 1:53pm UTC](https://discourse.julialang.org/t/scssolver-in-convex-and-jump/4171 "2017-06-10T13:53:47Z")

</div>

The SCS solver is for convex cone problems, but Convex.jl manages to use it to solve quadratic problems; JuMP.jl instead throws an error. On the other hand, Ipopt seems to be working fine with JuMP but Convex complains. …

---

## [CSPRNG functions](https://discourse.julialang.org/t/csprng-functions/3977)

<div class="topic-metadata">

**Author:** [@acad2](https://discourse.julialang.org/u/acad2)\
**Replies:** 6\
**Last updated:** [June 9, 2017, 9:21am UTC](https://discourse.julialang.org/t/csprng-functions/3977 "2017-06-09T09:21:24Z")

</div>

Generally in cryptography, we need to use Cryptographically Secure Pseudo-Random Number Generator. But I could not find anything like that in Julia. Python has CSPRNG which I could use (based on this example): julia\> u…

---

## [How to single out valid data from DataArray?](https://discourse.julialang.org/t/how-to-single-out-valid-data-from-dataarray/4137)

<div class="topic-metadata">

**Author:** [@jonalm](https://discourse.julialang.org/u/jonalm)\
**Replies:** 4\
**Last updated:** [June 8, 2017, 9:25pm UTC](https://discourse.julialang.org/t/how-to-single-out-valid-data-from-dataarray/4137 "2017-06-08T21:25:58Z")

</div>

Hi there, I am working with DataArrays, and would like to calculate the mean of the DataArray content while ignoring NA, NaN and also Inf values. This seems like a basic use case, so I apologies in advance for failing i…

---

## [Trap floating point exceptions](https://discourse.julialang.org/t/trap-floating-point-exceptions/4157)

<div class="topic-metadata">

**Author:** [@antoine-levitt](https://discourse.julialang.org/u/antoine-levitt)\
**Replies:** 0\
**Last updated:** [June 8, 2017, 2:08am UTC](https://discourse.julialang.org/t/trap-floating-point-exceptions/4157 "2017-06-08T02:08:27Z")

</div>

Some languages and compilers allow trapping floating point exceptions so that, for instance, a computation producing a NaN stops. This is very useful for debugging. Can this be done in julia? There’s https://github.com/J…

---

## [Anyone successfully used OpenCV in Windows?](https://discourse.julialang.org/t/anyone-successfully-used-opencv-in-windows/4154)

<div class="topic-metadata">

**Author:** [@rand5](https://discourse.julialang.org/u/rand5)\
**Replies:** 0\
**Last updated:** [June 8, 2017, 12:50am UTC](https://discourse.julialang.org/t/anyone-successfully-used-opencv-in-windows/4154 "2017-06-08T00:50:33Z")

</div>

I was very excited to see access to OpenCV via Julia but have had a bit of a run-around trying to get it to work. When trying to build the package, I get an error related to the Cxx.jl package that was flagged here. This…

---

## [Empty constraint](https://discourse.julialang.org/t/empty-constraint/4111)

<div class="topic-metadata">

**Author:** [@mposs](https://discourse.julialang.org/u/mposs)\
**Replies:** 8\
**Last updated:** [June 7, 2017, 8:37pm UTC](https://discourse.julialang.org/t/empty-constraint/4111 "2017-06-07T20:37:43Z")

</div>

Is it possible to create an empty constraint? I need that for coding a row-and-column generation algorithm where I need to generate constraints associated to new variables only. Hence, at some point I’ll need to create n…

---

## [VTKDataTypes.jl proposed type system - development code](https://discourse.julialang.org/t/vtkdatatypes-jl-proposed-type-system-development-code/4108)

<div class="topic-metadata">

**Author:** [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Replies:** 2\
**Last updated:** [June 7, 2017, 7:34pm UTC](https://discourse.julialang.org/t/vtkdatatypes-jl-proposed-type-system-development-code/4108 "2017-06-07T19:34:22Z")

</div>

This is some development code for VTKDataTypes.jl. It is not tested yet, so please report any bugs you find while using it in your code. Any suggestions are also welcome. Disclaimer: I am no expert, but I am working on i…

---

## [Updating parameters in Distribution](https://discourse.julialang.org/t/updating-parameters-in-distribution/4140)

<div class="topic-metadata">

**Author:** [@jacobcvt12](https://discourse.julialang.org/u/jacobcvt12)\
**Replies:** 2\
**Last updated:** [June 7, 2017, 4:36pm UTC](https://discourse.julialang.org/t/updating-parameters-in-distribution/4140 "2017-06-07T16:36:49Z")

</div>

I’d like to be able to modify the parameters in a Distribution using a tuple. For example, something like this using Distributions x=Normal(1.0, 3.0) # doesn't work params(x) = (2.0, 4.0) Is it possible to do somethi…

---

## [The Pyramid immutable in GeometryTypes.jl](https://discourse.julialang.org/t/the-pyramid-immutable-in-geometrytypes-jl/3885)

<div class="topic-metadata">

**Author:** [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Replies:** 6\
**Last updated:** [June 7, 2017, 9:41am UTC](https://discourse.julialang.org/t/the-pyramid-immutable-in-geometrytypes-jl/3885 "2017-06-07T09:41:26Z")

</div>

I was going through types.jl from the GeometryTypes module, and I found the following is the definition of the Pyramid immutable: immutable Pyramid{T} \<: GeometryPrimitive{3, T} middle::Point{3, T} length::T …

---

## [JuMP: How to construct a matrix with both variables and real numbers](https://discourse.julialang.org/t/jump-how-to-construct-a-matrix-with-both-variables-and-real-numbers/4127)

<div class="topic-metadata">

**Author:** [@Ksun46](https://discourse.julialang.org/u/Ksun46)\
**Replies:** 3\
**Last updated:** [June 7, 2017, 6:54am UTC](https://discourse.julialang.org/t/jump-how-to-construct-a-matrix-with-both-variables-and-real-numbers/4127 "2017-06-07T06:54:19Z")

</div>

I am a starter to JuMP and I am trying to construct a matrix that consists of both variables and real number(0s). The first way I can think of is to push! entries(variables or 0s) to an array and then push! multiple arra…

---

## [Dynamic generation of constraints](https://discourse.julialang.org/t/dynamic-generation-of-constraints/4107)

<div class="topic-metadata">

**Author:** [@mposs](https://discourse.julialang.org/u/mposs)\
**Replies:** 2\
**Last updated:** [June 6, 2017, 2:21pm UTC](https://discourse.julialang.org/t/dynamic-generation-of-constraints/4107 "2017-06-06T14:21:45Z")

</div>

Is there an easy way to expand the base set of a constraint? For instance, suppose that I have created @constraint(model, mycons\[i in 1:2\], x\[i\] \>= 1) and that I would like to extend it to @constraint(model, mycons\[i in…

---

## [Embedding plots in Gtk.jl](https://discourse.julialang.org/t/embedding-plots-in-gtk-jl/4085)

<div class="topic-metadata">

**Author:** [@piever](https://discourse.julialang.org/u/piever)\
**Replies:** 5\
**Last updated:** [June 5, 2017, 11:54am UTC](https://discourse.julialang.org/t/embedding-plots-in-gtk-jl/4085 "2017-06-05T11:54:25Z")

</div>

I’m exploring the Gtk.jl package to create simple GUIs to visualize data and I wanted to ask if it is it possible to draw a plot created with some backend of Plots.jl (say GR for example) into a Gtk window. I seem to rem…

---

## [Julia end-to-end LSTM for one CPU](https://discourse.julialang.org/t/julia-end-to-end-lstm-for-one-cpu/3942)

<div class="topic-metadata">

**Author:** [@hpoit](https://discourse.julialang.org/u/hpoit)\
**Replies:** 24\
**Last updated:** [June 2, 2017, 10:51pm UTC](https://discourse.julialang.org/t/julia-end-to-end-lstm-for-one-cpu/3942 "2017-06-02T22:51:45Z")

</div>

I wonder how this core would look like in Julia Together with a Julia frontend How do I build a Julia abstraction for all of this, integrated with JuliaDB? The GPU part would not be a priority at the moment, as I …

---

## [Cairo offscreen rendering](https://discourse.julialang.org/t/cairo-offscreen-rendering/3997)

<div class="topic-metadata">

**Author:** [@jpsamaroo](https://discourse.julialang.org/u/jpsamaroo)\
**Replies:** 11\
**Last updated:** [June 1, 2017, 6:31pm UTC](https://discourse.julialang.org/t/cairo-offscreen-rendering/3997 "2017-06-01T18:31:53Z")

</div>

Hey all! I’m working on an application which uses Gtk.jl and associated Graphics packages to render real-time simulations of spiking neural networks. The application is intended to be able to render a large number of dif…

---

## [JuMPChance into c++](https://discourse.julialang.org/t/jumpchance-into-c/4042)

<div class="topic-metadata">

**Author:** [@UserMorocco](https://discourse.julialang.org/u/UserMorocco)\
**Replies:** 0\
**Last updated:** [June 1, 2017, 6:15pm UTC](https://discourse.julialang.org/t/jumpchance-into-c/4042 "2017-06-01T18:15:31Z")

</div>

Hello, Can I use JuMPChance into c++ code ?

---

## [JuMP: Printing Mosek Solver Progress to Console](https://discourse.julialang.org/t/jump-printing-mosek-solver-progress-to-console/4006)

<div class="topic-metadata">

**Author:** [@prescient](https://discourse.julialang.org/u/prescient)\
**Replies:** 4\
**Last updated:** [June 1, 2017, 12:44am UTC](https://discourse.julialang.org/t/jump-printing-mosek-solver-progress-to-console/4006 "2017-06-01T00:44:31Z")

</div>

I’m an optimization newbie and can’t figure out how to print Mosek solver progress when attempting to solve problems with JuMP. Could anyone point me to an example that shows how to set Mosek parameters in JuMP? I’ve loo…

---

## [\[JuMP\] Sum function with additional constraints on indexes](https://discourse.julialang.org/t/jump-sum-function-with-additional-constraints-on-indexes/4001)

<div class="topic-metadata">

**Author:** [@Joao\_Saran](https://discourse.julialang.org/u/Joao_Saran)\
**Replies:** 2\
**Last updated:** [May 31, 2017, 11:03pm UTC](https://discourse.julialang.org/t/jump-sum-function-with-additional-constraints-on-indexes/4001 "2017-05-31T23:03:11Z")

</div>

My Objective Function is the following: @setObjective(m,Min, sum{costs\[i,j\]\*x\[i,j,k,t\],i= nodes, j = nodes, k = vehicles, t = periods}) AND I would like to make “i \< j” in the sum expression above! It is like adding …

---

## [Status of Dynamic Parallelism Support in CUDANative.jl](https://discourse.julialang.org/t/status-of-dynamic-parallelism-support-in-cudanative-jl/4019)

<div class="topic-metadata">

**Author:** [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Replies:** 4\
**Last updated:** [May 31, 2017, 8:28pm UTC](https://discourse.julialang.org/t/status-of-dynamic-parallelism-support-in-cudanative-jl/4019 "2017-05-31T20:28:40Z")

</div>

I found the following issue about dynamic parallelism, and I was wondering if there is any date by which CUDANative is expected to support dynamic parallelism in the future, or if there is any update on that. https://gi…

---

## [Announcement: JuMP 0.17 released](https://discourse.julialang.org/t/announcement-jump-0-17-released/4012)

<div class="topic-metadata">

**Author:** [@blegat](https://discourse.julialang.org/u/blegat)\
**Replies:** 0\
**Last updated:** [May 31, 2017, 12:15pm UTC](https://discourse.julialang.org/t/announcement-jump-0-17-released/4012 "2017-05-31T12:15:33Z")

</div>

We are pleased to announce the release of JuMP 0.17. The release introduced 2 breaking changes: JuMP used to automatically transform quadratic constraints into second order cones for conic models but this is no longer …

[Previous page](https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=558)

[Next page](https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=560)