PlotText/text for annotations; fixes

README.md

@@ -221,6 +221,10 @@ Keyword | Default | Type | Aliases
 `:linestyle` | `solid` | Series | `:linestyles`, `:ls`, `:s`, `:style`  
 `:linetype` | `path` | Series | `:linetypes`, `:lt`, `:t`, `:type`  
 `:linewidth` | `1` | Series | `:linewidths`, `:lw`, `:w`, `:width`  
+`:link` | `false` | Plot |   
+`:linkfunc` | `nothing` | Plot |   
+`:linkx` | `false` | Plot | `:xlink`  
+`:linky` | `false` | Plot | `:ylink`  
 `:marker` | `nothing` | Series | `:m`, `:mark`  
 `:markercolor` | `match` | Series | `:markercolors`, `:mc`, `:mcolor`  
 `:markershape` | `none` | Series | `:markershapes`, `:shape`  
@@ -289,19 +293,25 @@ Type | Aliases
 ---- | ----
 `:none` | `:n`, `:no`  
 `:auto` | `:a`  
-`:ellipse` | `:c`, `:circle`  
-`:rect` | `:r`, `:sq`, `:square`  
-`:diamond` | `:d`  
-`:utriangle` | `:^`, `:uptri`, `:uptriangle`, `:ut`, `:utri`  
-`:dtriangle` | `:V`, `:downtri`, `:downtriangle`, `:dt`, `:dtri`, `:v`  
 `:cross` | `:+`, `:plus`  
-`:xcross` | `:X`, `:x`  
-`:star1` | `:s`, `:star`  
-`:star2` | `:s2`  
+`:diamond` | `:d`  
+`:dtriangle` | `:V`, `:downtri`, `:downtriangle`, `:dt`, `:dtri`, `:v`  
+`:ellipse` | `:c`, `:circle`  
+`:heptagon` | `:hep`  
 `:hexagon` | `:h`, `:hex`  
 `:octagon` | `:o`, `:oct`  
+`:pentagon` | `:p`, `:pent`  
+`:rect` | `:r`, `:sq`, `:square`  
+`:star4` |   
+`:star5` | `:s`, `:star`, `:star1`  
+`:star6` |   
+`:star7` |   
+`:star8` | `:s2`, `:star2`  
+`:utriangle` | `:^`, `:uptri`, `:uptriangle`, `:ut`, `:utri`  
+`:xcross` | `:X`, `:x`  
 
 
+__Tip__: With supported backends, you can pass a `Plots.Shape` object for the `marker`/`markershape` arguments.  `Shape` takes a vector of 2-tuples in the constructor, defining the points of the polygon's shape in a unit-scaled coordinate space.  To make a square, for example, you could do `Shape([(1,1),(1,-1),(-1,-1),(-1,1)])`
 
 __Tip__: You can see the default value for a given argument with `default(arg::Symbol)`, and set the default value with `default(arg::Symbol, value)` or `default(; kw...)`.  For example set the default window size and whether we should show a legend with `default(size=(600,400), leg=false)`.
 
@@ -323,7 +333,7 @@ __Tip__: When plotting multiple lines, you can set all series to use the same va
 ```julia
 plot(rand(100,4); color = [:red RGB(0,0,1)],     # (Matrix) lines 1 and 3 are red, lines 2 and 4 are blue
                   axis = :auto,                  # lines 1 and 3 are on the left axis, lines 2 and 4 are on the right
-                  markershape = [:rect, :star1]  # (Vector) ALL lines are passed the vector [:rect, :star1]
+                  markershape = [:rect, :star]   # (Vector) ALL lines are passed the vector [:rect, :star1]
                   width = 5)                     # all lines have a width of 5
 ```
 
@@ -339,8 +349,9 @@ __Tip__: Call `gui()` to display the plot in a window.  Interactivity depends on
 - [x] Annotations
 - [x] Scales
 - [x] Categorical Inputs (strings, etc... for hist, bar? or can split one series into multiple?)
-- [ ] Custom markers
-- [ ] Special plots (boxplot, ohlc?)
+- [x] Custom markers
+- [ ] Contours
+- [ ] Boxplots
 - [x] Subplots
 - [x] Histograms
 - [ ] 3D plotting

docs/example_generation.jl

@@ -71,7 +71,7 @@ const examples = PlotExample[
               [:(styles = setdiff(supportedStyles(), [:auto])'), :(plot(cumsum(randn(20,length(styles)),1); style=:auto, label=map(string,styles), w=5))]),
   PlotExample("Marker types",
               "",
-              [:(markers = setdiff(supportedMarkers(), [:none,:auto])'), :(scatter(0.5:9.5, [fill(i-0.5,10) for i=length(markers):-1:1]; marker=:auto, label=map(string,markers), ms=12, ylim=(0,length(markers)+1)))]),
+              [:(markers = setdiff(supportedMarkers(), [:none,:auto,Shape])'), :(n = length(markers)), :(scatter(0.5:9.5, [fill(i-0.5,10) for i=n:-1:1]; marker=(12,:auto), lab=map(string,markers), ms=12, ylim=(0,n), bg=RGB(0.2,0.2,0.2)))]),
   PlotExample("Bar",
               "x is the midpoint of the bar. (todo: allow passing of edges instead of midpoints)",
               [:(bar(randn(999)))]),

docs/readme_template.md

@@ -215,6 +215,7 @@ Markers:
 
 [[MARKERS_TABLE]]
 
+__Tip__: With supported backends, you can pass a `Plots.Shape` object for the `marker`/`markershape` arguments.  `Shape` takes a vector of 2-tuples in the constructor, defining the points of the polygon's shape in a unit-scaled coordinate space.  To make a square, for example, you could do `Shape([(1,1),(1,-1),(-1,-1),(-1,1)])`
 
 __Tip__: You can see the default value for a given argument with `default(arg::Symbol)`, and set the default value with `default(arg::Symbol, value)` or `default(; kw...)`.  For example set the default window size and whether we should show a legend with `default(size=(600,400), leg=false)`.
 
@@ -252,8 +253,9 @@ __Tip__: Call `gui()` to display the plot in a window.  Interactivity depends on
 - [x] Annotations
 - [x] Scales
 - [x] Categorical Inputs (strings, etc... for hist, bar? or can split one series into multiple?)
-- [ ] Custom markers
-- [ ] Special plots (boxplot, ohlc?)
+- [x] Custom markers
+- [ ] Contours
+- [ ] Boxplots
 - [x] Subplots
 - [x] Histograms
 - [ ] 3D plotting

src/Plots.jl

@@ -60,6 +60,8 @@ export
   dataframes,
 
   Shape,
+  PlotText,
+  text,
   OHLC,
 
   colorscheme,
@@ -125,39 +127,43 @@ ohlc(args...; kw...)       = plot(args...; kw...,  linetype = :ohlc)
 ohlc!(args...; kw...)      = plot!(args...; kw..., linetype = :ohlc)
 
 
-title!(s::@compat(AbstractString))                 = plot!(title = s)
-xlabel!(s::@compat(AbstractString))                = plot!(xlabel = s)
-ylabel!(s::@compat(AbstractString))                = plot!(ylabel = s)
-xlims!{T<:Real,S<:Real}(lims::@compat(Tuple{T,S})) = plot!(xlims = lims)
-ylims!{T<:Real,S<:Real}(lims::@compat(Tuple{T,S})) = plot!(ylims = lims)
-xlims!(xmin::Real, xmax::Real)            = plot!(xlims = (xmin,xmax))
-ylims!(ymin::Real, ymax::Real)            = plot!(ylims = (ymin,ymax))
-xticks!{T<:Real}(v::AVec{T})              = plot!(xticks = v)
-yticks!{T<:Real}(v::AVec{T})              = plot!(yticks = v)
-xticks!{T<:Real,S<:@compat(AbstractString)}(ticks::AVec{T}, labels::AVec{S})  = plot!(xticks = (ticks,labels))
-yticks!{T<:Real,S<:@compat(AbstractString)}(ticks::AVec{T}, labels::AVec{S})  = plot!(yticks = (ticks,labels))
-annotate!(anns)                           = plot!(annotation = anns)
-xflip!(flip::Bool = true)                 = plot!(xflip = flip)
-yflip!(flip::Bool = true)                 = plot!(yflip = flip)
-xaxis!(args...)                           = plot!(xaxis = args)
-yaxis!(args...)                           = plot!(yaxis = args)
+title!(s::@compat(AbstractString); kw...)                 = plot!(; title = s, kw...)
+xlabel!(s::@compat(AbstractString); kw...)                = plot!(; xlabel = s, kw...)
+ylabel!(s::@compat(AbstractString); kw...)                = plot!(; ylabel = s, kw...)
+xlims!{T<:Real,S<:Real}(lims::@compat(Tuple{T,S}); kw...) = plot!(; xlims = lims, kw...)
+ylims!{T<:Real,S<:Real}(lims::@compat(Tuple{T,S}); kw...) = plot!(; ylims = lims, kw...)
+xlims!(xmin::Real, xmax::Real; kw...)                     = plot!(; xlims = (xmin,xmax), kw...)
+ylims!(ymin::Real, ymax::Real; kw...)                     = plot!(; ylims = (ymin,ymax), kw...)
+xticks!{T<:Real}(v::AVec{T}; kw...)                       = plot!(; xticks = v, kw...)
+yticks!{T<:Real}(v::AVec{T}; kw...)                       = plot!(; yticks = v, kw...)
+xticks!{T<:Real,S<:@compat(AbstractString)}(
+              ticks::AVec{T}, labels::AVec{S}; kw...)     = plot!(; xticks = (ticks,labels), kw...)
+yticks!{T<:Real,S<:@compat(AbstractString)}(
+              ticks::AVec{T}, labels::AVec{S}; kw...)     = plot!(; yticks = (ticks,labels), kw...)
+annotate!(anns...; kw...)                                 = plot!(; annotation = anns, kw...)
+xflip!(flip::Bool = true; kw...)                          = plot!(; xflip = flip, kw...)
+yflip!(flip::Bool = true; kw...)                          = plot!(; yflip = flip, kw...)
+xaxis!(args...; kw...)                                    = plot!(; xaxis = args, kw...)
+yaxis!(args...; kw...)                                    = plot!(; yaxis = args, kw...)
 
-title!(plt::Plot, s::@compat(AbstractString))                  = plot!(plt; title = s)
-xlabel!(plt::Plot, s::@compat(AbstractString))                 = plot!(plt; xlabel = s)
-ylabel!(plt::Plot, s::@compat(AbstractString))                 = plot!(plt; ylabel = s)
-xlims!{T<:Real,S<:Real}(plt::Plot, lims::@compat(Tuple{T,S}))  = plot!(plt; xlims = lims)
-ylims!{T<:Real,S<:Real}(plt::Plot, lims::@compat(Tuple{T,S}))  = plot!(plt; ylims = lims)
-xlims!(plt::Plot, xmin::Real, xmax::Real)             = plot!(plt; xlims = (xmin,xmax))
-ylims!(plt::Plot, ymin::Real, ymax::Real)             = plot!(plt; ylims = (ymin,ymax))
-xticks!{T<:Real}(plt::Plot, ticks::AVec{T})           = plot!(plt; xticks = ticks)
-yticks!{T<:Real}(plt::Plot, ticks::AVec{T})           = plot!(plt; yticks = ticks)
-xticks!{T<:Real,S<:@compat(AbstractString)}(plt::Plot, ticks::AVec{T}, labels::AVec{S})  = plot!(plt; xticks = (ticks,labels))
-yticks!{T<:Real,S<:@compat(AbstractString)}(plt::Plot, ticks::AVec{T}, labels::AVec{S})  = plot!(plt; yticks = (ticks,labels))
-annotate!(plt::Plot, anns)                            = plot!(plt; annotation = anns)
-xflip!(plt::Plot, flip::Bool = true)                  = plot!(plt; xflip = flip)
-yflip!(plt::Plot, flip::Bool = true)                  = plot!(plt; yflip = flip)
-xaxis!(plt::Plot, args...)                            = plot!(plt; xaxis = args)
-yaxis!(plt::Plot, args...)                            = plot!(plt; yaxis = args)
+title!(plt::Plot, s::@compat(AbstractString); kw...)                  = plot!(plt; title = s, kw...)
+xlabel!(plt::Plot, s::@compat(AbstractString); kw...)                 = plot!(plt; xlabel = s, kw...)
+ylabel!(plt::Plot, s::@compat(AbstractString); kw...)                 = plot!(plt; ylabel = s, kw...)
+xlims!{T<:Real,S<:Real}(plt::Plot, lims::@compat(Tuple{T,S}); kw...)  = plot!(plt; xlims = lims, kw...)
+ylims!{T<:Real,S<:Real}(plt::Plot, lims::@compat(Tuple{T,S}); kw...)  = plot!(plt; ylims = lims, kw...)
+xlims!(plt::Plot, xmin::Real, xmax::Real; kw...)                      = plot!(plt; xlims = (xmin,xmax), kw...)
+ylims!(plt::Plot, ymin::Real, ymax::Real; kw...)                      = plot!(plt; ylims = (ymin,ymax), kw...)
+xticks!{T<:Real}(plt::Plot, ticks::AVec{T}; kw...)                    = plot!(plt; xticks = ticks, kw...)
+yticks!{T<:Real}(plt::Plot, ticks::AVec{T}; kw...)                    = plot!(plt; yticks = ticks, kw...)
+xticks!{T<:Real,S<:@compat(AbstractString)}(plt::Plot,
+                          ticks::AVec{T}, labels::AVec{S}; kw...)     = plot!(plt; xticks = (ticks,labels), kw...)
+yticks!{T<:Real,S<:@compat(AbstractString)}(plt::Plot,
+                          ticks::AVec{T}, labels::AVec{S}; kw...)     = plot!(plt; yticks = (ticks,labels), kw...)
+annotate!(plt::Plot, anns...; kw...)                                  = plot!(plt; annotation = anns, kw...)
+xflip!(plt::Plot, flip::Bool = true; kw...)                           = plot!(plt; xflip = flip, kw...)
+yflip!(plt::Plot, flip::Bool = true; kw...)                           = plot!(plt; yflip = flip, kw...)
+xaxis!(plt::Plot, args...; kw...)                                     = plot!(plt; xaxis = args, kw...)
+yaxis!(plt::Plot, args...; kw...)                                     = plot!(plt; yaxis = args, kw...)
 
 
 # ---------------------------------------------------------

src/args.jl

@@ -615,7 +615,9 @@ function getSeriesArgs(pkg::PlottingPackage, initargs::Dict, kw, commandIndex::I
   aliasesAndAutopick(d, :markershape, _markerAliases, supportedMarkers(pkg), plotIndex)
 
   # update color
+  dumpdict(d, "before color")
   d[:color] = getSeriesRGBColor(d[:color], initargs, plotIndex)
+  dumpdict(d, "after color")
 
   # update markercolor
   mc = d[:markercolor]

src/backends/gadfly.jl

@@ -497,6 +497,20 @@ function createGadflyAnnotationObject(x, y, val::@compat(AbstractString))
                             ))
 end
 
+function createGadflyAnnotationObject(x, y, txt::PlotText)
+  halign = (txt.halign == :hcenter ? Compose.hcenter : (txt.halign == :left ? Compose.hleft : Compose.hright))
+  valign = (txt.valign == :vcenter ? Compose.vcenter : (txt.valign == :top ? Compose.vtop : Compose.vbottom))
+  rotations = (txt.rotation == 0.0 ? [] : [Compose.Rotation(txt.rotation, Compose.Point(Compose.x_measure(x), Compose.y_measure(y)))])
+  Gadfly.Guide.annotation(Compose.compose(
+                              Compose.context(), 
+                              Compose.text(x, y, txt.str, halign, valign, rotations...),
+                              Compose.font(string(txt.family)),
+                              Compose.fontsize(txt.pointsize * Gadfly.pt),
+                              Compose.stroke(txt.color),
+                              Compose.fill(txt.color)
+                            ))
+end
+
 function addAnnotations{X,Y,V}(plt::Plot{GadflyPackage}, anns::AVec{@compat(Tuple{X,Y,V})})
   for ann in anns
     push!(plt.o.guides, createGadflyAnnotationObject(ann...))

src/plot.jl

@@ -102,6 +102,7 @@ function plot!(plt::Plot, args...; kw...)
   preparePlotUpdate(plt)
 
   # get the list of dictionaries, one per series
+  dumpdict(d, "before createKWargsList")
   kwList, xmeta, ymeta = createKWargsList(plt, groupargs..., args...; d...)
   
   # if we were able to extract guide information from the series inputs, then update the plot
@@ -185,8 +186,8 @@ updateDictWithMeta(d::Dict, initargs::Dict, meta, isx::Bool) = nothing
 # --------------------------------------------------------------------
 
 annotations(::@compat(Void)) = []
-annotations{X<:Real, Y<:Real, V}(v::AVec{@compat(Tuple{X,Y,V})}) = v
-annotations{X<:Real, Y<:Real, V}(t::@compat(Tuple{X,Y,V})) = [t]
+annotations{X,Y,V}(v::AVec{@compat(Tuple{X,Y,V})}) = v
+annotations{X,Y,V}(t::@compat(Tuple{X,Y,V})) = [t]
 annotations(anns) = error("Expecting a tuple (or vector of tuples) for annotations: ",
                        "(x, y, annotation)\n    got: $(typeof(anns))")
 
@@ -259,6 +260,9 @@ end
 function createKWargsList(plt::PlottingObject, x, y; kw...)
   xs, xmeta = convertToAnyVector(x; kw...)
   ys, ymeta = convertToAnyVector(y; kw...)
+
+  # _debugMode.on && dumpcallstack()
+
   mx = length(xs)
   my = length(ys)
   ret = Any[]
@@ -277,7 +281,9 @@ function createKWargsList(plt::PlottingObject, x, y; kw...)
     # build the series arg dict
     numUncounted = get(d, :numUncounted, 0)
     n = plt.n + i + numUncounted
+    dumpdict(d, "before getSeriesArgs")
     d = getSeriesArgs(plt.backend, getinitargs(plt, n), d, i + numUncounted, convertSeriesIndex(plt, n), n)
+    dumpdict(d, "after getSeriesArgs")
     d[:x], d[:y] = computeXandY(xs[mod1(i,mx)], ys[mod1(i,my)])
 
     if haskey(d, :idxfilter)
@@ -325,6 +331,16 @@ function createKWargsList(plt::PlottingObject, y; kw...)
   createKWargsList(plt, nothing, y; kw...)
 end
 
+function createKWargsList(plt::PlottingObject, x::AVec, y::AVec, z::AVec; kw...)
+  error("TODO: contours or surfaces... irregular data")
+end
+function createKWargsList(plt::PlottingObject, x::AVec, y::AVec, z::Function; kw...)
+  error("TODO: contours or surfaces... function grid")
+end
+function createKWargsList(plt::PlottingObject, x::AVec, y::AVec, z::AMat; kw...)
+  error("TODO: contours or surfaces... grid")
+end
+
 function createKWargsList(plt::PlottingObject, f::FuncOrFuncs; kw...)
   error("Can't pass a Function or Vector{Function} for y without also passing x")
 end
@@ -347,7 +363,7 @@ mapFuncOrFuncs(fs::AVec{Function}, u::AVec) = [map(f, u) for f in fs]
 # special handling... xmin/xmax with parametric function(s)
 createKWargsList{T<:Real}(plt::PlottingObject, fx::FuncOrFuncs, fy::FuncOrFuncs, u::AVec{T}; kw...) = createKWargsList(plt, mapFuncOrFuncs(fx, u), mapFuncOrFuncs(fy, u); kw...)
 createKWargsList{T<:Real}(plt::PlottingObject, u::AVec{T}, fx::FuncOrFuncs, fy::FuncOrFuncs; kw...) = createKWargsList(plt, mapFuncOrFuncs(fx, u), mapFuncOrFuncs(fy, u); kw...)
-createKWargsList(plt::PlottingObject, fx::FuncOrFuncs, fy::FuncOrFuncs, umin::Real, umax::Real, numPoints::Int = 1000; kw...) = createKWargsList(plt, fx, fy, linspace(umin, umax, numPoints))
+createKWargsList(plt::PlottingObject, fx::FuncOrFuncs, fy::FuncOrFuncs, umin::Real, umax::Real, numPoints::Int = 1000; kw...) = createKWargsList(plt, fx, fy, linspace(umin, umax, numPoints); kw...)
 
 
 

src/types.jl

@@ -51,85 +51,6 @@ immutable Shape
   vertices::AVec
 end
 
-# const _square = Shape(@compat(Tuple{Float64,Float64})[
-#     ( 1.0, -1.0),
-#     ( 1.0,  1.0),
-#     (-1.0,  1.0),
-#     (-1.0, -1.0)
-#   ])
-
-# const _diamond = Shape(@compat(Tuple{Float64,Float64})[
-#     ( 0.0, -1.0),
-#     ( 1.0,  0.0),
-#     ( 0.0,  1.0),
-#     (-1.0,  0.0)
-#   ])
-
-# const _cross = Shape(@compat(Tuple{Float64,Float64})[
-#     (-1.0, -0.4), (-1.0,  0.4), # L edge
-#     (-0.4,  0.4),               # BL inside
-#     (-0.4,  1.0), ( 0.4,  1.0), # B edge
-#     ( 0.4,  0.4),               # BR inside
-#     ( 1.0,  0.4), ( 1.0, -0.4), # R edge
-#     ( 0.4, -0.4),               # TR inside
-#     ( 0.4, -1.0), (-0.4, -1.0), # T edge
-#     (-0.4, -0.4)                # TL inside
-#   ])
-
-# const _xcross = Shape(@compat(Tuple{Float64,Float64})[
-#     (x, y - u), (x + u, y - 2u), (x + 2u, y - u),
-#     (x + u, y), (x + 2u, y + u), (x + u, y + 2u),
-#     (x, y + u), (x - u, y + 2u), (x - 2u, y + u),
-#     (x - u, y), (x - 2u, y - u), (x - u, y - 2u)
-#   ]
-
-
-# function xcross(xs::AbstractArray, ys::AbstractArray, rs::AbstractArray)
-#   n = max(length(xs), length(ys), length(rs))
-#   polys = Array(Vector{@compat(Tuple{Compose.Measure, Compose.Measure})}, n)
-#   s = 1/sqrt(5)
-#   for i in 1:n
-#     x = Compose.x_measure(xs[mod1(i, length(xs))])
-#     y = Compose.y_measure(ys[mod1(i, length(ys))])
-#     r = rs[mod1(i, length(rs))]
-#     u = s*r
-#     polys[i] = [
-#       (x, y - u), (x + u, y - 2u), (x + 2u, y - u),
-#       (x + u, y), (x + 2u, y + u), (x + u, y + 2u),
-#       (x, y + u), (x - u, y + 2u), (x - 2u, y + u),
-#       (x - u, y), (x - 2u, y - u), (x - u, y - 2u)
-#     ]
-#   end
-
-#   return Gadfly.polygon(polys)
-# end
-
-
-# const _utriangle = Shape(@compat(Tuple{Float64,Float64})[
-#     (x - r, y + u),
-#     (x + r, y + u),
-#     (x, y - u)
-#   ]
-
-# function utriangle(xs::AbstractArray, ys::AbstractArray, rs::AbstractArray, scalar = 1)
-#   n = max(length(xs), length(ys), length(rs))
-#   polys = Array(Vector{@compat(Tuple{Compose.Measure, Compose.Measure})}, n)
-#   s = 0.8
-#   for i in 1:n
-#     x = Compose.x_measure(xs[mod1(i, length(xs))])
-#     y = Compose.y_measure(ys[mod1(i, length(ys))])
-#     r = rs[mod1(i, length(rs))]
-#     u = 0.8 * scalar * r
-#     polys[i] = [
-#       (x - r, y + u),
-#       (x + r, y + u),
-#       (x, y - u)
-#     ]
-#   end
-
-#   return Gadfly.polygon(polys)
-# end
-
 "get an array of tuples of points on a circle with radius `r`"
 function partialcircle(start_θ, end_θ, n = 20, r=1)
   @compat(Tuple{Float64,Float64})[(r*cos(u),r*sin(u)) for u in linspace(start_θ, end_θ, n)]
@@ -198,62 +119,57 @@ for n in [4,5,6,7,8]
   _shapes[symbol("star$n")] = makestar(n)
 end
 
+# -----------------------------------------------------------------------
 
-# :ellipse, :rect, :diamond, :utriangle, :dtriangle,
-#                      :cross, :xcross, :star1, :star2, :hexagon, :octagon
+"Wrap a string with font info"
+immutable PlotText
+  str::@compat(AbstractString)
+  family::Symbol
+  pointsize::Int
+  halign::Symbol
+  valign::Symbol
+  rotation::Float64
+  color::Colorant
+end
 
 
+function text(str, args...)
   
+  # defaults
+  family = :courier
+  pointsize = 12
+  halign = :hcenter
+  valign = :vcenter
+  rotation = 0.0
+  color = colorant"black"
 
-# const _xcross = Shape(@compat(Tuple{Float64,Float64})[
-#   ]
+  for arg in args
+    if arg == :center
+      halign = :hcenter
+      valign = :vcenter
+    elseif arg in (:hcenter, :left, :right)
+      halign = arg
+    elseif arg in (:vcenter, :top, :bottom)
+      valign = arg
+    elseif typeof(arg) <: Colorant
+      color = arg
+    elseif isa(arg, Symbol)
+      try
+        color = parse(Colorant, string(arg))
+      catch
+        family = arg
+      end
+    elseif typeof(arg) <: Integer
+      pointsize = arg
+    elseif typeof(arg) <: Real
+      rotation = convert(Float64, arg)
+    else
+      warn("Unused font arg: $arg ($(typeof(arg)))")
+    end
+  end
 
-# # function hexagon(xs::AbstractArray, ys::AbstractArray, rs::AbstractArray)
-# #   n = max(length(xs), length(ys), length(rs))
-
-# #   polys = Array(Vector{@compat(Tuple{Compose.Measure, Compose.Measure})}, n)
-# #   for i in 1:n
-# #     x = Compose.x_measure(xs[mod1(i, length(xs))])
-# #     y = Compose.y_measure(ys[mod1(i, length(ys))])
-# #     r = rs[mod1(i, length(rs))]
-# #     u = 0.6r
-
-# #     polys[i] = [
-# #       (x-r, y-u), (x-r, y+u), # L edge
-# #       (x, y+r),               # B
-# #       (x+r, y+u), (x+r, y-u), # R edge
-# #       (x, y-r)                # T
-# #     ]
-# #   end
-
-# #   return Gadfly.polygon(polys)
-# # end
-
-
-
-# const _xcross = Shape(@compat(Tuple{Float64,Float64})[
-#   ]
-
-# function octagon(xs::AbstractArray, ys::AbstractArray, rs::AbstractArray)
-#   n = max(length(xs), length(ys), length(rs))
-
-#   polys = Array(Vector{@compat(Tuple{Compose.Measure, Compose.Measure})}, n)
-#   for i in 1:n
-#     x = Compose.x_measure(xs[mod1(i, length(xs))])
-#     y = Compose.y_measure(ys[mod1(i, length(ys))])
-#     r = rs[mod1(i, length(rs))]
-#     u = 0.4r
-
-#     polys[i] = [
-#       (x-r, y-u), (x-r, y+u), # L edge
-#       (x-u, y+r), (x+u, y+r), # B edge
-#       (x+r, y+u), (x+r, y-u), # R edge
-#       (x+u, y-r), (x-u, y-r), # T edge
-#     ]
-#   end
-
-#   return Gadfly.polygon(polys)
-# end
+  PlotText(string(str), family, pointsize, halign, valign, rotation, color)
+end
 
 # -----------------------------------------------------------------------
 

src/utils.jl

@@ -200,6 +200,11 @@ function dumpdict(d::Dict, prefix = "")
   println()
 end
 
+
+function dumpcallstack()
+  error()  # well... you wanted the stacktrace, didn't you?!?
+end
+
 # ---------------------------------------------------------------