add notes on vision and roadmap

Author: v0dro

README.md

@@ -1,30 +1,37 @@
 # rubyplot
 An advanced plotting library for Ruby.
 
-Rubyplot aims to be the most advanced visualization solution for Rubyists.
+**Rubyplot aims to be the most advanced visualization solution for Rubyists.**
+It aims to allow you to visualize anything, anywhere with a simple, Ruby-like API.
 
-# Roadmap
+# Roadmap by priority
+The release schedule and feature roadmap is as follows. Check issues labelled with
+the version tags for knowing what we're working on currently. Listed by priority.
 
-The library in its current form is heavily under development.
+## Release v0.1.rc1
+Deadline: 15 January 2019
 
-Here's the roadmap for rubyplot for the near future. Please write a mail to the sciruby ML
-or open an issue if you feel something is amiss:
+* Support currently available plots fully with various customization options on Axes.
+* Fully automated testing infrastructure. Travis integration with rubocop.
+* Create a 'debug mode' for easy debugging.
 
-## Near future
+## Release v0.1.rc2
+Deadline: 26 February 2019
 
-* Finish integration of rmagick and GR backends.
-* Creating  an Artist layer on RMagick based on GR Framework (The current 
-necessary functions are included in GR FunctionClasses file in Rubyplot-GR) 
-and integrating it with the existing scripting layer.
-* Integrate with nmatrix/plures.
-* Write tutorials and documentation.
-* Addition to events sub-layer in the backend layer.
-* Further development of scripting layer for additional features.
-* Make new plots on a priority basis. Here's the list: https://github.com/SciRuby/rubyplot/issues/4
+* Support multiple Axes on the same Figure. 
+* Support atleast 3 new kinds of plots.
 
-## Long term
+## Release v0.1.rc3
+Deadline: 15 April 2019
 
-* Integrate with iruby notebook, daru, statsample, rb-gsl, etc.
-* Integrate with red data tools projects like charty, red-chainer, etc.
-* Integrate with QT/web front end to provide widget support etc.
+* Support atleast 3 new kinds of plots.
+* Support Simple Plotting Interface.
+* Move from using Ruby Arrays to a typed-array based system.
 
+# Long term vision
+Rubyplot's long term vision, by priority:
+
+* Integrate the Rubyplot interface with the GR framework.
+* Generate various types of publication quality plots.
+* Interactive plotting using QT/GTK.
+* Interactive or static plots for web backend.

lib/rubyplot/artist/figure.rb

@@ -44,6 +44,7 @@ def initialize(height: nil, width: nil)
         @left_spacing = 0.05
         @right_spacing = 0.05
         @subplots = nil
+        @n = 0
         setup_default_theme
         add_subplots @nrows, @ncols
       end
@@ -57,6 +58,13 @@ def add_subplot(nrow, ncol)
       end
 
       def write(file_name)
+        @backend.set_base_image_gradient(
+          Rubyplot::Color::COLOR_INDEX[@theme_options[:background_colors][0]],
+          Rubyplot::Color::COLOR_INDEX[@theme_options[:background_colors][1]],
+          @width,
+          @height,
+          @theme_options[:background_direction]
+        )
         @subplots.each { |i| i.each(&:draw) }
         @backend.write(file_name)
       end
@@ -72,13 +80,6 @@ def setup_default_theme
         @theme_options = defaults.merge Themes::CLASSIC_WHITE
         @marker_color = @theme_options[:marker_color]
         @font_color = @theme_options[:font_color] || @marker_color
-        @backend.set_base_image_gradient(
-          Rubyplot::Color::COLOR_INDEX[@theme_options[:background_colors][0]],
-          Rubyplot::Color::COLOR_INDEX[@theme_options[:background_colors][1]],
-          @width,
-          @height,
-          @theme_options[:background_direction]
-        )
       end
     end
     # class Figure

lib/rubyplot/backend/magick_wrapper.rb

@@ -59,6 +59,7 @@ def draw_text(text,font_color:,font: nil,pointsize:,
         @draw.gravity = GRAVITY_MEASURE[gravity] || Magick::ForgetGravity
         @draw.stroke stroke
         @draw.stroke_antialias true
+        @draw.text_antialias = true
         @draw.rotation = rotation if rotation
         @draw.annotate(@base_image, 0,0,x.to_i,y.to_i, text.gsub('%', '%%'))
         @draw.rotation = 90.0 if rotation

spec/axes_spec.rb

@@ -28,6 +28,8 @@
           end          
         end
         axes.title = "net earnings in different months."
+        axes.x_title = "X title"
+        axes.y_title = "Y title"
         axes.x_ticks = ['Jan', 'Feb', 'March', 'April', 'May', 'June',  'July',
                         'August', 'September', 'October', 'November', 'December']
       end
@@ -153,7 +155,7 @@
     end
 
     context "#line!" do
-      it "makes a simple line plot", focus: true do
+      it "makes a simple line plot" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.line! do |p|
@@ -164,24 +166,20 @@
         axes.title = "A line graph."
       end
 
-      it "plots 2 simple lines on the same axes" do
+      it "plots 2 simple lines on the same axes", focus: true do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.line! do |p|
-          p.data [20, 23, 19, 8]
+          p.data [3, 5, 10, 15]
           p.label = "Marco"
           p.color = :blue
         end
         axes.line! do |p|
-          p.data [1, 53, 76, 18]
+          p.data [1, 9, 13, 28]
           p.label = "John"
           p.color = :green
         end
         axes.title = "A line graph."
-        axes.x_ticks = {
-          0 => "Ola Ruby",
-          1 => "Hello Ruby"
-        }
       end
 
       skip "fails to match the reference image" do
@@ -277,7 +275,7 @@
     end
 
     context "#bar!" do
-      it "adds a simple bar plot", focus: true do
+      it "adds a simple bar plot" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.bar!(600) do |p| 
@@ -323,15 +321,10 @@
         axes.title = "Plot with X-Y axes."
         axes.x_title = "Score (%)"
         axes.y_title = "Students"
-        axes.x_ticks = {
-          0 => '5/6',
-          1 => '5/15',
-          2 => '5/24',
-          3 => '5/36'
-        }
+        axes.x_ticks = [ '5/6', '5/15', '5/24', '5/36' ]
       end
 
-      it "adds multiple bar plots for wide graph", focus: true do
+      it "adds multiple bar plots for wide graph" do
         @figure = Rubyplot::Figure.new(height: 400, width: 800)
         axes = @figure.add_subplot 0,0
         @planet_data.each do |name, nums|
@@ -342,7 +335,7 @@
         end
       end
 
-      skip "plots both positive and negative values" do
+      it "plots both positive and negative values" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.bar! do |p|
@@ -362,7 +355,7 @@
         }
       end
 
-      skip "tests negative values" do
+      it "tests negative values" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.title = "all negative bar graph."

spec/spec_helper.rb

@@ -45,7 +45,6 @@ def compare_with_reference(test_image, reference_image)
       base_image = SPEC_ROOT + TEMP_DIR + plot_name
       other_image = SPEC_ROOT + FIXTURES_DIR + plot_name
       @figure.write(other_image)
-            
       @figure.write(base_image)
 
       expect(base_image).to eq_image(other_image, 10)