Plots.jl: Horizontal bars broken on Plotly.

[apalugniok]

using Plots; plotly()
xs = [ "x$i" for i in 1:10 ]
p = bar(xs, -5:4, orientation = :h)

julia> p[1][1][:x]
10-element Array{String,1}:
 "x1" 
 "x2" 
 "x3" 
 "x4" 
 "x5" 
 "x6" 
 "x7" 
 "x8" 
 "x9" 
 "x10"

julia> p[1][1][:y]
10-element Array{Float64,1}:
 0.5
 1.5
 2.5
 3.5
 4.5
 5.5
 6.5
 7.5
 8.5
 9.5

There is also a disagreement with axis[:discrete_values]

julia> p[1][:yaxis][:discrete_values]
10-element Array{Any,1}:
 "x1" 
 "x2" 
 "x3" 
 "x4" 
 "x5" 
 "x6" 
 "x7" 
 "x8" 
 "x9" 
 "x10"

julia> p[1][:xaxis][:discrete_values]
0-element Array{Any,1}

which is making ticks = :native output both x and y as the array `["x1", "x2", ... , "x10"] and gives

[wkearn]

This was a fun one. It happens in here because the x-axis does not get properly updated when the orientation is horizontal. It affects Plotly/PlotlyJS because they rely on native support for :bar whereas the others (GR, PyPlot, and PGFPlots, at least) use the step recipe.

A fix is on the way!