Added direct plotting for Polynomial.Poly objects

Author: snotskie

src/Plotly.jl

@@ -79,6 +79,8 @@ function plot(data::Array,options=Dict())
     end
 end
 
+include("plot.jl")
+
 function layout(layout_opts::Dict,meta_opts=Dict())
     global plotlyaccount
     if !isdefined(Plotly,:plotlyaccount)

src/plot.jl

@@ -0,0 +1,27 @@
+pkgs = keys(Pkg.installed())
+
+if in("Polynomial", pkgs)
+	using Polynomial
+	function get_points(p::Poly, left, right, step)
+		n::Int = (right - left) / step + 1
+		X = Float64[0 for i in 1:n]
+		Y = Float64[0 for i in 1:n]
+		for i in 1:n
+			x = step*(i-1) + left
+			y = polyval(p, x)
+			X[i] = x
+			Y[i] = y
+		end
+		return ["x"=>X, "y"=>Y, "type"=>"scatter", "mode"=>"lines", "name"=>"$p"]
+	end
+
+	function plot{T<:Number}(ps::Array{Poly{T},1}, options=Dict())
+		opt = merge(options, ["left"=>-10, "right"=>10, "step"=>0.5])
+		data = [get_points(p, opt["left"], opt["right"], opt["step"]) for p in ps]
+		return plot([data], options)
+	end
+
+	function plot(p::Poly, options=Dict())
+		return plot([p], options)
+	end
+end