working on spy and nbins tuple

examples/spy.ipynb

@@ -0,0 +1,107 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[Plots.jl] Default backend: immerse"
+     ]
+    }
+   ],
+   "source": [
+    "using Plots\n",
+    "n = 1000\n",
+    "a = rand(n)\n",
+    "y = Float64[i*a[i]+j*a[j] for i in 1:n, j in 1:n]\n",
+    "y = float(y .> mean(y));"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "[Plots.jl] Initializing backend: immerse"
+     ]
+    }
+   ],
+   "source": [
+    "spy(y, nbins=(20,100))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "# get the indices (I,J) and the values (V) of non-zero values in y\n",
+    "I,J,V = findnz(y);\n",
+    "# plot the J's vs the I's in a heatmap to recreate the spy call\n",
+    "heatmap(J,I)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "pyplot()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "histogram(randn(1000), "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Julia 0.4.0-rc2",
+   "language": "julia",
+   "name": "julia-0.4"
+  },
+  "language_info": {
+   "file_extension": ".jl",
+   "mimetype": "application/julia",
+   "name": "julia",
+   "version": "0.4.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}

src/Plots.jl

@@ -33,6 +33,8 @@ export
   ohlc,
   ohlc!,
 
+  spy,
+
   title!,
   xlabel!,
   ylabel!,
@@ -95,6 +97,11 @@ vline!(args...; kw...)     = plot!(args...; kw..., linetype = :vline)
 ohlc(args...; kw...)       = plot(args...; kw...,  linetype = :ohlc)
 ohlc!(args...; kw...)      = plot!(args...; kw..., linetype = :ohlc)
 
+"Sparsity plot... heatmap of non-zero values of a matrix"
+function spy{T<:Real}(y::AMat{T}; kw...)
+  I,J,V = findnz(y)
+  heatmap(J, I; leg=false, kw...)
+end
 
 title!(s::AbstractString)                 = plot!(title = s)
 xlabel!(s::AbstractString)                = plot!(xlabel = s)
@@ -122,7 +129,6 @@ xticks!{T<:Real,S<:AbstractString}(plt::Plot, ticks::AVec{T}, labels::AVec{S})
 yticks!{T<:Real,S<:AbstractString}(plt::Plot, ticks::AVec{T}, labels::AVec{S})  = plot!(plt; yticks = (ticks,labels))
 annotate!(plt::Plot, anns)                            = plot!(plt; annotation = anns)
 
-
 # ---------------------------------------------------------
 
 

src/backends/gadfly.jl

@@ -85,12 +85,12 @@ function createGadflyPlotObject(d::Dict)
 end
 
 
-# function getGeoms(linetype::Symbol, marker::Symbol, markercolor::Colorant, nbins::Int)
 function getLineGeoms(d::Dict)
   lt = d[:linetype]
-  lt == :hexbin && return [Gadfly.Geom.hexbin(xbincount = d[:nbins], ybincount = d[:nbins])]
+  xbins, ybins = maketuple(d[:nbins])
-  lt == :heatmap && return [Gadfly.Geom.histogram2d(xbincount = d[:nbins], ybincount = d[:nbins])]
+  lt == :hexbin && return [Gadfly.Geom.hexbin(xbincount = xbins, ybincount = ybins)]
-  lt == :hist && return [Gadfly.Geom.histogram(bincount = d[:nbins])]
+  lt == :heatmap && return [Gadfly.Geom.histogram2d(xbincount = xbins, ybincount = ybins)]
+  lt == :hist && return [Gadfly.Geom.histogram(bincount = xbins)]
   # lt == :none && return [Gadfly.Geom.path]
   lt == :path && return [Gadfly.Geom.path]
   # lt == :scatter && return [Gadfly.Geom.point]

src/backends/qwt.jl

@@ -95,6 +95,13 @@ function adjustQwtKeywords(plt::Plot{QwtPackage}, iscreating::Bool; kw...)
   end
 
   replaceLinetypeAlias(d)
+
+  for k in keys(d)
+    if haskey(_qwtAliases, k)
+      d[_qwtAliases[k]] = d[k]
+    end
+  end
+  
   d
 end
 

src/utils.jl

@@ -107,6 +107,10 @@ end
 makevec(v::AVec) = v
 makevec{T}(v::T) = T[v]
 
+"duplicate a single value, or pass the 2-tuple through"
+maketuple(x::Real) = (x,x)
+maketuple{T,S}(x::Tuple{T,S}) = x
+
 
 function replaceAliases!(d::Dict, aliases::Dict)
   for (k,v) in d