Error when putting "using Plots"

[ayaka-usui]

I have a problem. I would like to plot, and I think that a simple way is to use a package "Plots". I have installed Plots by putting 'Pkg.add("Plots")'. Then, "using Plots; plot(x,y)" is supposed to work, I think. But a lot of errors came out. It would be great if you tell me what is going on.

julia> using Plots
INFO: Precompiling module Plots.
WARNING: --output requested, but no modules defined during run
WARNING: The call to compilecache failed to create a usable precompiledcache file for module Dates. Got:
WARNING: Cache file "/Users/usui/.julia/lib/v0.6/Dates.ji" not found.
WARNING: eval from module Main to Plots:
Expr(:call, Expr(:., :Base, :include_from_node1)::Any, "/Users/usui/.julia/v0.6/Dates/src/Dates.jl")::Any
  ** incremental compilation may be broken for this module **

WARNING: requiring "Dates" in module "Plots" did not define a corresponding module.
ERROR: LoadError: ArgumentError: Module Printf not found in current path.
Run `Pkg.add("Printf")` to install the Printf package.
Stacktrace:
 [1] _require(::Symbol) at ./loading.jl:435
 [2] require(::Symbol) at ./loading.jl:405
 [3] include_from_node1(::String) at ./loading.jl:576
 [4] include(::String) at ./sysimg.jl:14
 [5] anonymous at ./<missing>:2
while loading /Users/usui/.julia/v0.6/Plots/src/Plots.jl, in expressionstarting on line 9
ERROR: Failed to precompile Plots to /Users/usui/.julia/lib/v0.6/Plots.ji.
Stacktrace:
 [1] compilecache(::String) at ./loading.jl:710
 [2] _require(::Symbol) at ./loading.jl:497
 [3] require(::Symbol) at ./loading.jl:405
 [4] macro expansion at /Users/usui/.julia/v0.6/Atom/src/repl.jl:118 [inlined]
 [5] anonymous at ./<missing>:?

[daschw]

What does Pkg.status("Plots") say?

[ayaka-usui]

Thanks for the quick response! It says:

julia> Pkg.status("Plots")
 - Plots                         0.17.3+            master

[daschw]

Master is julia 0.7 only. 0.17.4 is the last version to support julia 0.6. You have to do Pkg.free("Plots") (and maybe Pkg.update()) in order to use Plots.

[ayaka-usui]

I did Pkg.free("Plots") and Pkg.update(). In putting using Plots, there are still errors but they are different from those of before. But plot(x,y) works. Thanks! These are their results:

julia> Pkg.free("Plots")
INFO: Freeing Plots
INFO: No packages to install, update or remove

julia> Pkg.update()
INFO: Updating METADATA...
INFO: Computing changes...
INFO: Cloning cache of FunctionalCollections from https://github.com/JuliaCollections/FunctionalCollections.jl.git
INFO: Cloning cache of JSExpr from https://github.com/JuliaGizmos/JSExpr.jl.git
INFO: Cloning cache of Observables from https://github.com/JuliaGizmos/Observables.jl.git
INFO: Cloning cache of WebIO from https://github.com/JuliaGizmos/WebIO.jl.git
INFO: Upgrading Blink: v0.6.2 => v0.7.0
INFO: Installing FunctionalCollectionsv0.3.2
INFO: Installing JSExpr v0.2.0
INFO: Installing Observables v0.1.2
INFO: Installing WebIO v0.2.4
INFO: Building HttpParser
INFO: Building MbedTLS
Info: using prebuilt binaries
INFO: Building WebIO
INFO: Building Blink

julia> using Plots
INFO: Precompiling module Plots.
WARNING: using Plots.savefig in moduleMain conflicts with an existing identifier.
WARNING: using Plots.quiver in module Main conflicts with an existing identifier.
WARNING: using Plots.twinx in module Main conflicts with an existing identifier.
WARNING: using Plots.hexbin in module Main conflicts with an existing identifier.
WARNING: using Plots.barh in module Main conflicts with an existing identifier.
WARNING: using Plots.bar in module Main conflicts with an existing identifier.
WARNING: using Plots.scatter in moduleMain conflicts with an existing identifier.
WARNING: using Plots.pie in module Main conflicts with an existing identifier.
WARNING: using Plots.arrow in module Main conflicts with an existing identifier.
WARNING: using Plots.text in module Main conflicts with an existing identifier.
WARNING: using Plots.contourf in module Main conflicts with an existing identifier.
WARNING: using Plots.spy in module Main conflicts with an existing identifier.
WARNING: using Plots.grid in module Main conflicts with an existing identifier.
WARNING: using Plots.plot in module Main conflicts with an existing identifier.
WARNING: using Plots.contour in moduleMain conflicts with an existing identifier.
WARNING: using Plots.boxplot in moduleMain conflicts with an existing identifier.

One more thing I want to ask is how to remove the errors after using Plot, though plot works. For you information, as you mentioned, the version of julia in mine is 0.6:

julia> VERSION
v"0.6.4"

[daschw]

Are these warnings still appearing if you restart julia and run using Plots?

[ayaka-usui]

You are right! No error arose after julia restarted. Thanks a lot, daschw!

Press Enter to start Julia.
Starting Julia...
INFO: Loading HttpServer methods...
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.6.4 (2018-07-09 19:09 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-apple-darwin14.5.0

julia> using Plots

julia> plot(rand(100))

julia>

[daschw]

No, problem, I'm glad it works now!

[ABMSUH]

Hi,
I am facing big problem in Julia as follow:

“We tried to lunch Julia from:
C:\Users\Pechman\AppData\Local\Julia-1.1.0\bin\julia.exe
This path can be changed in the settings.
Details:
Access is denied.”

Please advise me to fix it…