ijulia-notebook

问题 With the latest version of IPython , kernels can be registered by placing a kernel.json file in ~/.ipython/kernels/<kernel-name>/ . I am currently trying to add a julia and a R kernel and I am wondering who is responsible for creating and maintaining those kernel.json files. Currently, I googled and created following kernel.json for julia by hand: { "display_name": "Julia", "language": "julia", "argv": [ "julia", "-i", "-F", "/User/<user>/.julia/v0.3/IJulia/src/kernel.jl", "{connection_file}"

问题 I am encountering package compatibility issues within my global Julia environment for specific packages I want to use in a Jupyter notebook. Is there a way to tell IJulia to use a different environment instead of my global one? 回答1: The default IJulia kernel sets --project=@. so the most convenient way (IMO) is to just keep your project in the same folder as the notebook. The result is that the correct project is used from the start and you don't have to worry about activating it while in the

问题 I am encountering package compatibility issues within my global Julia environment for specific packages I want to use in a Jupyter notebook. Is there a way to tell IJulia to use a different environment instead of my global one? 回答1: The default IJulia kernel sets --project=@. so the most convenient way (IMO) is to just keep your project in the same folder as the notebook. The result is that the correct project is used from the start and you don't have to worry about activating it while in the

问题 When I run my code one error occurs with my code setindex! not defined for WeakRefStrings.StringArray{String,1} CSV File here. using CSV EVDdata =CSV.read(raw"wikipediaEVDdatesconverted.csv") EVDdata[end-9:end,:] And the Error Code is here rows, cols = size(EVDdata) for j =1:cols for i = 1:rows if !isdigit(string(EVDdata[i, j])[1]) EVDdata[i,j] = 0 end end end I am working with Julia 1.4.1 on Jupter Notebook 回答1: setindex!(collection, item, inds...) is the function that colection[inds...] =

问题 When I run my code one error occurs with my code setindex! not defined for WeakRefStrings.StringArray{String,1} CSV File here. using CSV EVDdata =CSV.read(raw"wikipediaEVDdatesconverted.csv") EVDdata[end-9:end,:] And the Error Code is here rows, cols = size(EVDdata) for j =1:cols for i = 1:rows if !isdigit(string(EVDdata[i, j])[1]) EVDdata[i,j] = 0 end end end I am working with Julia 1.4.1 on Jupter Notebook 回答1: setindex!(collection, item, inds...) is the function that colection[inds...] =

问题 What Julia functions can output a DataFrame so it is converted into text other than the ones shown below? using DataFrames A = DataFrame(randn(10, 7)); print("\n\n\n", "A = DataFrame(randn(10, 7))") print("\n\n\n","print(A)\n") print(A) print("\n\n\n","show(A)\n") show(A) print("\n\n\n","show(A, true)\n") show(A, true) print("\n\n\n","show(A, false)\n") show(A, false) print("\n\n\n","showall(A)\n") showall(A) print("\n\n\n","showall(A, true)\n") showall(A, true) print("\n\n\n","showall(A,

问题 What Julia functions can output a DataFrame so it is converted into text other than the ones shown below? using DataFrames A = DataFrame(randn(10, 7)); print("\n\n\n", "A = DataFrame(randn(10, 7))") print("\n\n\n","print(A)\n") print(A) print("\n\n\n","show(A)\n") show(A) print("\n\n\n","show(A, true)\n") show(A, true) print("\n\n\n","show(A, false)\n") show(A, false) print("\n\n\n","showall(A)\n") showall(A) print("\n\n\n","showall(A, true)\n") showall(A, true) print("\n\n\n","showall(A,

问题 I recently began using julia, and I would like to use in with IPython Notebook/Jupyter. So, I installed julia using MacPorts, i.e. sudo port install julia . Following the installation instructions here: https://github.com/JuliaLang/IJulia.jl After the prompt, I used "Pkg.add("IJulia") to install IJulia. However, I cannot use Julia with IPython notebook. After opening the notebook with ipython notebook --profile=julia the kernel for the julia notebook dies instantly and cannot be restarted.

问题 I am trying to plot a function evolving in real time with Julia. For that, I saw that GR package could be used in Julia, when I try to apply exactly the example given here : import GR GR.inline("mov") x = [0:0.01:2*pi] for i = 1:200 GR.plot(x, sin.(x + i / 10.0)) end GR.show() I get the following error message while executing the loop part : expected Real or Complex in #plot_args#12(::Symbol, ::Function, ::Tuple{Array{FloatRange{Float64},1},Array{Array{Float64,1},1}}) at /Users/myname/.julia

问题 How do I add a local image to an IJulia notebook? The image is in the same local network folder as the IPYNB file. The folder is accessed via a symbolic link. I've tried both relative and absolute file names. <img src="test.png" alt="Image Test" style="width:600px">  Both show up the same, as a broken image link with "Image Test" next to the symbol. Jupyter Info : Python 2.7.12 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:42:40) [GCC 4.4.7 20120313 (Red Hat 4.4