title: Plot in Julia 1.3: functions of Plot not defined
body: <p>I'm trying to build a scatter plot in Julia 1.3 and found those example <a href="http://julia.cookbook.tips/doku.php?id=plotting" rel="nofollow noreferrer">there</a></p>
  
  <pre><code>using Plots
  scatter( 1:16, sqrt.(1:16), labels="Square Root", size=[600,240] )
  
  ERROR: LoadError: UndefVarError: scatter not defined
  Stacktrace:
   [1] top-level scope at /Users/...:19
   [2] include at ./boot.jl:328 [inlined]
   [3] include_relative(::Module, ::String) at ./loading.jl:1105
   [4] include(::Module, ::String) at ./Base.jl:31
   [5] include(::String) at ./client.jl:424
   [6] top-level scope at REPL[22]:1
  in expression starting at /Users/...:19
  </code></pre>
  
  <p>I also tried an example from the official <a href="https://docs.juliaplots.org/latest/layouts/" rel="nofollow noreferrer">Plot documentaiton</a>, but got a similar error message:</p>
  
  <pre><code>using Plots
  l = @layout [  a{0.3w} [grid(3,3)
                           b{0.2h} ]]
  plot(
      rand(10,11),
      layout = l, legend = false, seriestype = [:bar :scatter :path],
      title = ["($i)" for j = 1:1, i=1:11], titleloc = :right, titlefont = fo
  )
  
  ERROR: LoadError: UndefVarError: grid not defined
  Stacktrace:
   [1] top-level scope at /Users/mymac/.julia/packages/Plots/2KhB2/src/layouts.jl:671
   [2] include at ./boot.jl:328 [inlined]
   [3] include_relative(::Module, ::String) at ./loading.jl:1105
   [4] include(::Module, ::String) at ./Base.jl:31
   [5] include(::String) at ./client.jl:424
   [6] top-level scope at REPL[22]:1
  in expression starting at /Users/...:10
  </code></pre>
  
  <p>I tried to remove and re-install <code>Plots</code> with <code>using Pkg; Pkg.rm("Plots")</code> and <code>using Pkg; Pkg.add("Plots")</code>, but it didn't solve the problem</p>
  
  <p>It seems that some of the functions of Plots are not defined/found by Julia</p>
  
  <p>What am I doing wrong?</p>