652 lines
21 KiB
Julia
652 lines
21 KiB
Julia
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type CurrentPlot
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nullableplot::Nullable{AbstractPlot}
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end
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const CURRENT_PLOT = CurrentPlot(Nullable{AbstractPlot}())
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isplotnull() = isnull(CURRENT_PLOT.nullableplot)
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function current()
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if isplotnull()
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error("No current plot/subplot")
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end
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get(CURRENT_PLOT.nullableplot)
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end
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current(plot::AbstractPlot) = (CURRENT_PLOT.nullableplot = Nullable(plot))
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# ---------------------------------------------------------
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Base.string(plt::Plot) = "Plot{$(plt.backend) n=$(plt.n)}"
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Base.print(io::IO, plt::Plot) = print(io, string(plt))
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Base.show(io::IO, plt::Plot) = print(io, string(plt))
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getplot(plt::Plot) = plt
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getattr(plt::Plot, idx::Int = 1) = plt.attr
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convertSeriesIndex(plt::Plot, n::Int) = n
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# ---------------------------------------------------------
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"""
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The main plot command. Use `plot` to create a new plot object, and `plot!` to add to an existing one:
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```
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plot(args...; kw...) # creates a new plot window, and sets it to be the current
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plot!(args...; kw...) # adds to the `current`
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plot!(plotobj, args...; kw...) # adds to the plot `plotobj`
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```
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There are lots of ways to pass in data, and lots of keyword arguments... just try it and it will likely work as expected.
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When you pass in matrices, it splits by columns. See the documentation for more info.
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"""
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# this creates a new plot with args/kw and sets it to be the current plot
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function plot(args...; kw...)
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d = KW(kw)
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preprocessArgs!(d)
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# create an empty Plot then process
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plt = Plot()
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# plt.user_attr = d
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_plot!(plt, d, args)
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end
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# build a new plot from existing plots
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# note: we split into plt1 and plts_tail so we can dispatch correctly
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function plot(plt1::Plot, plts_tail::Plot...; kw...)
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d = KW(kw)
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preprocessArgs!(d)
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# build our plot vector from the args
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n = length(plts_tail) + 1
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plts = Array(Plot, n)
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plts[1] = plt1
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for (i,plt) in enumerate(plts_tail)
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plts[i+1] = plt
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end
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# compute the layout
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layout = layout_args(d, n)[1]
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num_sp = sum([length(p.subplots) for p in plts])
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# create a new plot object, with subplot list/map made of existing subplots.
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# note: we create a new backend figure for this new plot object
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# note: all subplots and series "belong" to this new plot...
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plt = Plot()
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# TODO: build the user_attr dict by creating "Any matrices" for the args of each subplot
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# TODO: replace this with proper processing from a merged user_attr KW
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# update plot args, first with existing plots, then override with d
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for p in plts
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_update_plot_args(plt, p.attr)
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plt.n += p.n
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end
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_update_plot_args(plt, d)
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# pass new plot to the backend
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plt.o = _create_backend_figure(plt)
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plt.init = true
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# create the layout and initialize the subplots
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plt.layout, plt.subplots, plt.spmap = build_layout(layout, num_sp, copy(plts))
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for (idx, sp) in enumerate(plt.subplots)
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_initialize_subplot(plt, sp)
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serieslist = series_list(sp)
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if sp in sp.plt.inset_subplots
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push!(plt.inset_subplots, sp)
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end
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sp.plt = plt
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sp.attr[:subplot_index] = idx
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for series in serieslist
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push!(plt.series_list, series)
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_series_added(plt, series)
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end
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end
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# first apply any args for the subplots
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for (idx,sp) in enumerate(plt.subplots)
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_update_subplot_args(plt, sp, d, idx, false)
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end
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# do we need to link any axes together?
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link_axes!(plt.layout, plt[:link])
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# finish up
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current(plt)
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if get(d, :show, default(:show))
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gui()
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end
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plt
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end
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# this adds to the current plot, or creates a new plot if none are current
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function plot!(args...; kw...)
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local plt
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try
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plt = current()
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catch
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return plot(args...; kw...)
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end
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plot!(current(), args...; kw...)
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end
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# this adds to a specific plot... most plot commands will flow through here
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function plot!(plt::Plot, args...; kw...)
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d = KW(kw)
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preprocessArgs!(d)
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# merge!(plt.user_attr, d)
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_plot!(plt, d, args)
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end
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function strip_first_letter(s::Symbol)
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str = string(s)
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str[1:1], Symbol(str[2:end])
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end
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# -------------------------------------------------------------------------------
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# getting ready to add the series... last update to subplot from anything
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# that might have been added during series recipes
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function _prepare_subplot{T}(plt::Plot{T}, d::KW)
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st::Symbol = d[:seriestype]
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sp::Subplot{T} = d[:subplot]
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sp_idx = get_subplot_index(plt, sp)
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_update_subplot_args(plt, sp, d, sp_idx, true)
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st = _override_seriestype_check(d, st)
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# change to a 3d projection for this subplot?
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if is3d(st)
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sp.attr[:projection] = "3d"
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end
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# initialize now that we know the first series type
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if !haskey(sp.attr, :init)
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_initialize_subplot(plt, sp)
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sp.attr[:init] = true
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end
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sp
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end
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function _override_seriestype_check(d::KW, st::Symbol)
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# do we want to override the series type?
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if !is3d(st)
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z = d[:z]
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if !isa(z, Void) && (size(d[:x]) == size(d[:y]) == size(z))
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st = (st == :scatter ? :scatter3d : :path3d)
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d[:seriestype] = st
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end
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end
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st
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end
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function _prepare_annotations(sp::Subplot, d::KW)
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# strip out series annotations (those which are based on series x/y coords)
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# and add them to the subplot attr
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sp_anns = annotations(sp[:annotations])
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anns = annotations(pop!(d, :series_annotations, []))
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if length(anns) > 0
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x, y = d[:x], d[:y]
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nx, ny, na = map(length, (x,y,anns))
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n = max(nx, ny, na)
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anns = [(x[mod1(i,nx)], y[mod1(i,ny)], text(anns[mod1(i,na)])) for i=1:n]
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end
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sp.attr[:annotations] = vcat(sp_anns, anns)
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end
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function _expand_subplot_extrema(sp::Subplot, d::KW, st::Symbol)
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# adjust extrema and discrete info
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if st == :image
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w, h = size(d[:z])
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expand_extrema!(sp[:xaxis], (0,w))
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expand_extrema!(sp[:yaxis], (0,h))
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sp[:yaxis].d[:flip] = true
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elseif !(st in (:pie, :histogram, :histogram2d))
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expand_extrema!(sp, d)
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end
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end
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function _add_the_series(plt, d)
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warnOnUnsupported_args(plt.backend, d)
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warnOnUnsupported(plt.backend, d)
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series = Series(d)
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push!(plt.series_list, series)
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_series_added(plt, series)
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end
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# -------------------------------------------------------------------------------
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# this method recursively applies series recipes when the seriestype is not supported
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# natively by the backend
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function _process_seriesrecipe(plt::Plot, d::KW)
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# replace seriestype aliases
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st = Symbol(d[:seriestype])
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st = d[:seriestype] = get(_typeAliases, st, st)
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# if it's natively supported, finalize processing and pass along to the backend, otherwise recurse
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if st in supported_types()
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sp = _prepare_subplot(plt, d)
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_prepare_annotations(sp, d)
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_expand_subplot_extrema(sp, d, st)
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_add_the_series(plt, d)
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else
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# get a sub list of series for this seriestype
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datalist = RecipesBase.apply_recipe(d, Val{st}, d[:x], d[:y], d[:z])
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# assuming there was no error, recursively apply the series recipes
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for data in datalist
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if isa(data, RecipeData)
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_process_seriesrecipe(plt, data.d)
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else
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warn("Unhandled recipe: $(data)")
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break
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end
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end
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end
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nothing
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end
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function command_idx(kw_list::AVec{KW}, kw::KW)
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Int(kw[:series_plotindex]) - Int(kw_list[1][:series_plotindex]) + 1
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end
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function _expand_seriestype_array(d::KW, args)
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sts = get(d, :seriestype, :path)
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if typeof(sts) <: AbstractArray
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delete!(d, :seriestype)
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RecipeData[begin
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dc = copy(d)
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dc[:seriestype] = sts[r,:]
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RecipeData(dc, args)
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end for r=1:size(sts,1)]
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else
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RecipeData[RecipeData(copy(d), args)]
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end
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end
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function _preprocess_args(d::KW, args, still_to_process::Vector{RecipeData})
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# the grouping mechanism is a recipe on a GroupBy object
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# we simply add the GroupBy object to the front of the args list to allow
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# the recipe to be applied
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if haskey(d, :group)
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args = (extractGroupArgs(d[:group], args...), args...)
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end
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# if we were passed a vector/matrix of seriestypes and there's more than one row,
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# we want to duplicate the inputs, once for each seriestype row.
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if !isempty(args)
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append!(still_to_process, _expand_seriestype_array(d, args))
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end
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# remove subplot and axis args from d... they will be passed through in the kw_list
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if !isempty(args)
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for (k,v) in d
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for defdict in (_subplot_defaults,
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_axis_defaults,
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_axis_defaults_byletter)
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if haskey(defdict, k)
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delete!(d, k)
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end
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end
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end
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end
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args
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end
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function _preprocess_userrecipe(kw::KW)
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_add_markershape(kw)
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# if there was a grouping, filter the data here
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_filter_input_data!(kw)
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# map marker_z if it's a Function
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if isa(get(kw, :marker_z, nothing), Function)
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# TODO: should this take y and/or z as arguments?
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kw[:marker_z] = map(kw[:marker_z], kw[:x], kw[:y], kw[:z])
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end
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# map line_z if it's a Function
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if isa(get(kw, :line_z, nothing), Function)
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kw[:line_z] = map(kw[:line_z], kw[:x], kw[:y], kw[:z])
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end
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# convert a ribbon into a fillrange
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if get(kw, :ribbon, nothing) != nothing
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make_fillrange_from_ribbon(kw)
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end
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return
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end
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function _add_errorbar_kw(kw_list::Vector{KW}, kw::KW)
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# handle error bars by creating new recipedata data... these will have
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# the same recipedata index as the recipedata they are copied from
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for esym in (:xerror, :yerror)
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if get(kw, esym, nothing) != nothing
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# we make a copy of the KW and apply an errorbar recipe
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errkw = copy(kw)
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errkw[:seriestype] = esym
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errkw[:label] = ""
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errkw[:primary] = false
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push!(kw_list, errkw)
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end
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end
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end
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function _add_smooth_kw(kw_list::Vector{KW}, kw::KW)
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# handle smoothing by adding a new series
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if get(kw, :smooth, false)
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x, y = kw[:x], kw[:y]
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β, α = convert(Matrix{Float64}, [x ones(length(x))]) \ convert(Vector{Float64}, y)
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sx = [minimum(x), maximum(x)]
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sy = β * sx + α
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push!(kw_list, merge(copy(kw), KW(
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:seriestype => :path,
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:x => sx,
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:y => sy,
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:fillrange => nothing,
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:label => "",
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:primary => false,
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)))
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end
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end
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function _process_userrecipes(plt::Plot, d::KW, args)
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still_to_process = RecipeData[]
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args = _preprocess_args(d, args, still_to_process)
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# for plotting recipes, swap out the args and update the parameter dictionary
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# we are keeping a queue of series that still need to be processed.
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# each pass through the loop, we pop one off and apply the recipe.
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# the recipe will return a list a Series objects... the ones that are
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# finished (no more args) get added to the kw_list, and the rest go into the queue
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# for processing.
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kw_list = KW[]
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while !isempty(still_to_process)
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# grab the first in line to be processed and pass it through apply_recipe
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# to generate a list of RecipeData objects (data + attributes)
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next_series = shift!(still_to_process)
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rd_list = RecipesBase.apply_recipe(next_series.d, next_series.args...)
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for recipedata in rd_list
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# recipedata should be of type RecipeData. if it's not then the inputs must not have been fully processed by recipes
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if !(typeof(recipedata) <: RecipeData)
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error("Inputs couldn't be processed... expected RecipeData but got: $recipedata")
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end
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if isempty(recipedata.args)
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_process_userrecipe(plt, kw_list, recipedata)
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else
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# args are non-empty, so there's still processing to do... add it back to the queue
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push!(still_to_process, recipedata)
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end
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end
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end
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# don't allow something else to handle it
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d[:smooth] = false
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kw_list
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end
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function _process_userrecipe(plt::Plot, kw_list::Vector{KW}, recipedata::RecipeData)
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# when the arg tuple is empty, that means there's nothing left to recursively
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# process... finish up and add to the kw_list
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kw = recipedata.d
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_preprocess_userrecipe(kw)
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warnOnUnsupported_scales(plt.backend, kw)
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# add the plot index
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plt.n += 1
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kw[:series_plotindex] = plt.n
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push!(kw_list, kw)
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_add_errorbar_kw(kw_list, kw)
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_add_smooth_kw(kw_list, kw)
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return
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end
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# Grab the first in line to be processed and pass it through apply_recipe
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# to generate a list of RecipeData objects (data + attributes).
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# If we applied a "plot recipe" without error, then add the returned datalist's KWs,
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# otherwise we just add the original KW.
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function _process_plotrecipe(plt::Plot, kw::KW, kw_list::Vector{KW}, still_to_process::Vector{KW})
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if !isa(get(kw, :seriestype, nothing), Symbol)
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# seriestype was never set, or it's not a Symbol, so it can't be a plot recipe
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push!(kw_list, kw)
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return
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end
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try
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st = kw[:seriestype]
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st = kw[:seriestype] = get(_typeAliases, st, st)
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datalist = RecipesBase.apply_recipe(kw, Val{st}, plt)
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for data in datalist
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if data.d[:seriestype] == st
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error("Plot recipe $st returned the same seriestype: $(data.d)")
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end
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push!(still_to_process, data.d)
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end
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catch err
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if isa(err, MethodError)
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push!(kw_list, kw)
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else
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rethrow()
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end
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end
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return
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end
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function _plot_setup(plt::Plot, d::KW, kw_list::Vector{KW})
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# merge in anything meant for the Plot
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for kw in kw_list, (k,v) in kw
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haskey(_plot_defaults, k) && (d[k] = pop!(kw, k))
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end
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# TODO: init subplots here
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_update_plot_args(plt, d)
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if !plt.init
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plt.o = _create_backend_figure(plt)
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# create the layout and subplots from the inputs
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plt.layout, plt.subplots, plt.spmap = build_layout(plt.attr)
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for (idx,sp) in enumerate(plt.subplots)
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sp.plt = plt
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sp.attr[:subplot_index] = idx
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end
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plt.init = true
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end
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# handle inset subplots
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insets = plt[:inset_subplots]
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if insets != nothing
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if !(typeof(insets) <: AVec)
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insets = [insets]
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end
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for inset in insets
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parent, bb = is_2tuple(inset) ? inset : (nothing, inset)
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P = typeof(parent)
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if P <: Integer
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parent = plt.subplots[parent]
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elseif P == Symbol
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parent = plt.spmap[parent]
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else
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parent = plt.layout
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end
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sp = Subplot(backend(), parent=parent)
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sp.plt = plt
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sp.attr[:relative_bbox] = bb
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sp.attr[:subplot_index] = length(plt.subplots)
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push!(plt.subplots, sp)
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push!(plt.inset_subplots, sp)
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end
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end
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end
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function _subplot_setup(plt::Plot, d::KW, kw_list::Vector{KW})
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# we'll keep a map of subplot to an attribute override dict.
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# Subplot/Axis attributes set by a user/series recipe apply only to the
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# Subplot object which they belong to.
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# TODO: allow matrices to still apply to all subplots
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sp_attrs = Dict{Subplot,Any}()
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for kw in kw_list
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# get the Subplot object to which the series belongs.
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sps = get(kw, :subplot, :auto)
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sp = get_subplot(plt, cycle(sps == :auto ? plt.subplots : plt.subplots[sps], command_idx(kw_list,kw)))
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kw[:subplot] = sp
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# extract subplot/axis attributes from kw and add to sp_attr
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attr = KW()
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for (k,v) in kw
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||
if haskey(_subplot_defaults, k) || haskey(_axis_defaults_byletter, k)
|
||
attr[k] = pop!(kw, k)
|
||
end
|
||
if haskey(_axis_defaults, k)
|
||
v = pop!(kw, k)
|
||
for letter in (:x,:y,:z)
|
||
attr[Symbol(letter,k)] = v
|
||
end
|
||
end
|
||
end
|
||
sp_attrs[sp] = attr
|
||
end
|
||
|
||
# override subplot/axis args. `sp_attrs` take precendence
|
||
for (idx,sp) in enumerate(plt.subplots)
|
||
attr = merge(d, get(sp_attrs, sp, KW()))
|
||
_update_subplot_args(plt, sp, attr, idx, false)
|
||
end
|
||
|
||
# do we need to link any axes together?
|
||
link_axes!(plt.layout, plt[:link])
|
||
end
|
||
|
||
# this is the core plotting function. recursively apply recipes to build
|
||
# a list of series KW dicts.
|
||
# note: at entry, we only have those preprocessed args which were passed in... no default values yet
|
||
function _plot!(plt::Plot, d::KW, args::Tuple)
|
||
# d[:plot_object] = plt
|
||
|
||
# --------------------------------
|
||
# "USER RECIPES"
|
||
# --------------------------------
|
||
|
||
kw_list = _process_userrecipes(plt, d, args)
|
||
|
||
|
||
# --------------------------------
|
||
# "PLOT RECIPES"
|
||
# --------------------------------
|
||
|
||
# "plot recipe", which acts like a series type, and is processed before
|
||
# the plot layout is created, which allows for setting layouts and other plot-wide attributes.
|
||
# we get inputs which have been fully processed by "user recipes" and "type recipes",
|
||
# so we can expect standard vectors, surfaces, etc. No defaults have been set yet.
|
||
still_to_process = kw_list
|
||
kw_list = KW[]
|
||
while !isempty(still_to_process)
|
||
next_kw = shift!(still_to_process)
|
||
_process_plotrecipe(plt, next_kw, kw_list, still_to_process)
|
||
end
|
||
|
||
# --------------------------------
|
||
# Plot/Subplot/Layout setup
|
||
# --------------------------------
|
||
_plot_setup(plt, d, kw_list)
|
||
_subplot_setup(plt, d, kw_list)
|
||
|
||
# !!! note: At this point, kw_list is fully decomposed into individual series... one KW per series. !!!
|
||
# !!! The next step is to recursively apply series recipes until the backend supports that series type !!!
|
||
|
||
# --------------------------------
|
||
# "SERIES RECIPES"
|
||
# --------------------------------
|
||
|
||
for kw in kw_list
|
||
sp::Subplot = kw[:subplot]
|
||
# idx = get_subplot_index(plt, sp)
|
||
|
||
# # we update subplot args in case something like the color palatte is part of the recipe
|
||
# _update_subplot_args(plt, sp, kw, idx, true)
|
||
|
||
# set default values, select from attribute cycles, and generally set the final attributes
|
||
_add_defaults!(kw, plt, sp, command_idx(kw_list,kw))
|
||
|
||
# now we have a fully specified series, with colors chosen. we must recursively handle
|
||
# series recipes, which dispatch on seriestype. If a backend does not natively support a seriestype,
|
||
# we check for a recipe that will convert that series type into one made up of lower-level components.
|
||
# For example, a histogram is just a bar plot with binned data, a bar plot is really a filled step plot,
|
||
# and a step plot is really just a path. So any backend that supports drawing a path will implicitly
|
||
# be able to support step, bar, and histogram plots (and any recipes that use those components).
|
||
_process_seriesrecipe(plt, kw)
|
||
end
|
||
|
||
# --------------------------------
|
||
|
||
current(plt)
|
||
|
||
# do we want to force display?
|
||
if plt[:show]
|
||
gui(plt)
|
||
end
|
||
|
||
plt
|
||
end
|
||
|
||
|
||
function _replace_linewidth(d::KW)
|
||
# get a good default linewidth... 0 for surface and heatmaps
|
||
if get(d, :linewidth, :auto) == :auto
|
||
d[:linewidth] = (get(d, :seriestype, :path) in (:surface,:heatmap,:image) ? 0 : 1)
|
||
end
|
||
end
|
||
|
||
# we're getting ready to display/output. prep for layout calcs, then update
|
||
# the plot object after
|
||
function prepare_output(plt::Plot)
|
||
_before_layout_calcs(plt)
|
||
|
||
w, h = plt.attr[:size]
|
||
plt.layout.bbox = BoundingBox(0mm, 0mm, w*px, h*px)
|
||
|
||
# One pass down and back up the tree to compute the minimum padding
|
||
# of the children on the perimeter. This is an backend callback.
|
||
_update_min_padding!(plt.layout)
|
||
for sp in plt.inset_subplots
|
||
_update_min_padding!(sp)
|
||
end
|
||
|
||
# now another pass down, to update the bounding boxes
|
||
update_child_bboxes!(plt.layout)
|
||
|
||
# update those bounding boxes of inset subplots
|
||
update_inset_bboxes!(plt)
|
||
|
||
# the backend callback, to reposition subplots, etc
|
||
_update_plot_object(plt)
|
||
end
|
||
|
||
function prepared_object(plt::Plot)
|
||
prepare_output(plt)
|
||
plt.o
|
||
end
|
||
|
||
# --------------------------------------------------------------------
|
||
# plot to a Subplot
|
||
|
||
function plot(sp::Subplot, args...; kw...)
|
||
plt = sp.plt
|
||
plot(plt, args...; kw..., subplot = findfirst(plt.subplots, sp))
|
||
end
|
||
function plot!(sp::Subplot, args...; kw...)
|
||
plt = sp.plt
|
||
plot!(plt, args...; kw..., subplot = findfirst(plt.subplots, sp))
|
||
end
|
||
|
||
# --------------------------------------------------------------------
|