v0.2.7

Uplot should expect cases where data takes a long time to reach the standard input.
This mechanism is not appropriate.

This reverts commit c40c59a21d.

README.md

@@ -9,8 +9,6 @@ Create ASCII charts on the terminal with data from standard streams in the pipel
 
 :bar_chart: Powered by [UnicodePlot](https://github.com/red-data-tools/unicode_plot.rb)
 
-:construction: Under development! :construction:
-
 ## Installation
 
 ```
@@ -26,22 +24,57 @@ ruby -r numo/narray -e "puts Numo::DFloat.new(1000).rand_norm.to_a" \
   | uplot hist --nbins 15
 ```
 
-<img src="https://i.imgur.com/wpsoGJq.png" width="75%" height="75%"></img>
+<img src="https://i.imgur.com/wpsoGJq.png" width="75%" height="75%">
+
+```sh
+echo "from numpy import random;" \
+     "n = random.randn(10000);"  \
+     "print('\n'.join(str(i) for i in n))" \
+| python \
+| uplot hist --nbins 20
+```
+
+<img src="https://i.imgur.com/97R2MQx.png" width="75%" height="75%">
 
 **scatter**
 
 ```sh
-wget https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv -qO - \
+curl -s https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv \
- | cut -f1-4 -d, \
+| cut -f1-4 -d, \
- | uplot scatter -H -d, -t IRIS -m 10
+| uplot scatter -H -d, -t IRIS
 ```
 
+<img src="https://i.imgur.com/STX7bFT.png" width="75%" height="75%">
+
+**line**
+
+```sh
+curl -s https://www.mhlw.go.jp/content/pcr_positive_daily.csv \
+| cut -f2 -d, \
+| uplot line -w 50 -h 15 -t 'PCR positive tests' --xlabel Date --ylabel number
+```
+
+<img src="https://i.imgur.com/PVl5dsa.png" width="75%" height="75%">
+
+**box**
+
+```sh
+curl -s https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv \
+| cut -f1-4 -d, \
+| uplot box -H -d, -t IRIS
+```
+
+<img src="https://i.imgur.com/sNI4SmN.png" width="75%" height="75%">
+
+
 ## Development
 
+Let's keep it simple.
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at [https://github.com/kojix2/uplot](https://github.com/kojix2/uplot).
 
 ## License
 
-The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).
+[MIT License](https://opensource.org/licenses/MIT).

lib/uplot/command/params.rb

@@ -2,6 +2,11 @@
 
 module Uplot
   class Command
+    # UnicodePlot parameters.
+    # * Normally in a Ruby program, you might use hash for the parameter object.
+    # * Here, I use Struct for 2 safety reason.
+    # * The keys are static in Struct.
+    # * Struct does not conflict with keyword arguments. Hash dose.
     Params = Struct.new(
       # Sort me!
       :title,

lib/uplot/command/parser.rb

@@ -26,7 +26,12 @@ module Uplot
         OptionParser.new do |opt|
           opt.program_name  = 'uplot'
           opt.version       = Uplot::VERSION
-          opt.on('-O', '--pass [VAL]', 'file to output standard input data to [stdout]') do |v|
+          opt.summary_width = 24
+          opt.on_tail('') # Add a blank line at the end
+          opt.separator('')
+          opt.on('Options:')
+          opt.on('-O', '--pass [VAL]', 'file to output standard input data to [stdout]',
+                 'for inserting uplot in the middle of Unix pipes') do |v|
             @pass = v || $stdout
           end
           opt.on('-o', '--output VAL', 'file to output results to [stderr]') do |v|
@@ -86,20 +91,22 @@ module Uplot
           # Usage and help messages
           main_parser.banner = \
             <<~MSG
+              
               Program: uplot (Tools for plotting on the terminal)
-              Version: #{Uplot::VERSION} (using unicode_plot #{UnicodePlot::VERSION})
+              Version: #{Uplot::VERSION} (using UnicodePlot #{UnicodePlot::VERSION})
+              Source:  https://github.com/kojix2/uplot
 
               Usage:   uplot <command> [options]
 
-              Command: barplot    bar
+              Commands:
+                  barplot    bar
                   histogram  hist
                   lineplot   line
+                  lineplots  lines
                   scatter    s
                   density    d
                   boxplot    box
                   colors
-
-              Options:
             MSG
         end
       end
@@ -107,9 +114,10 @@ module Uplot
       def sub_parser
         @sub_parser ||= create_default_parser do |parser|
           parser.banner = <<~MSG
+
             Usage: uplot #{command} [options]
 
-            Options:
+            Options for #{command}:
           MSG
 
           case command
@@ -118,80 +126,80 @@ module Uplot
             exit 1
 
           when :barplot, :bar
-            parser.on('--symbol VAL', String) do |v|
+            parser.on_head('--symbol VAL', String, 'character to be used to plot the bars') do |v|
               params.symbol = v
             end
-            parser.on('--xscale VAL', String) do |v|
+            parser.on_head('--xscale VAL', String, 'axis scaling') do |v|
               params.xscale = v
             end
 
           when :count, :c
-            parser.on('--symbol VAL', String) do |v|
+            parser.on_head('--symbol VAL', String, 'character to be used to plot the bars') do |v|
               params.symbol = v
             end
 
           when :histogram, :hist
-            parser.on('-n', '--nbins VAL', Numeric) do |v|
+            parser.on_head('-n', '--nbins VAL', Numeric, 'approximate number of bins') do |v|
               params.nbins = v
             end
-            parser.on('--closed VAL', String) do |v|
+            parser.on_head('--closed VAL', String) do |v|
               params.closed = v
             end
-            parser.on('--symbol VAL', String) do |v|
+            parser.on_head('--symbol VAL', String, 'character to be used to plot the bars') do |v|
               params.symbol = v
             end
 
           when :lineplot, :line
-            parser.on('--canvas VAL', String) do |v|
+            parser.on_head('--canvas VAL', String, 'type of canvas') do |v|
               params.canvas = v
             end
-            parser.on('--xlim VAL', Array) do |v|
+            parser.on_head('--xlim VAL', Array, 'plotting range for the x coordinate') do |v|
               params.xlim = v.take(2)
             end
-            parser.on('--ylim VAL', Array) do |v|
+            parser.on_head('--ylim VAL', Array, 'plotting range for the y coordinate') do |v|
               params.ylim = v.take(2)
             end
 
           when :lineplots, :lines
-            parser.on('--canvas VAL', String) do |v|
+            parser.on_head('--canvas VAL', String) do |v|
               params.canvas = v
             end
-            parser.on('--xlim VAL', Array) do |v|
+            parser.on_head('--xlim VAL', Array, 'plotting range for the x coordinate') do |v|
               params.xlim = v.take(2)
             end
-            parser.on('--ylim VAL', Array) do |v|
+            parser.on_head('--ylim VAL', Array, 'plotting range for the y coordinate') do |v|
               params.ylim = v.take(2)
             end
 
           when :scatter, :s
-            parser.on('--canvas VAL', String) do |v|
+            parser.on_head('--canvas VAL', String) do |v|
               params.canvas = v
             end
-            parser.on('--xlim VAL', Array) do |v|
+            parser.on_head('--xlim VAL', Array, 'plotting range for the x coordinate') do |v|
               params.xlim = v.take(2)
             end
-            parser.on('--ylim VAL', Array) do |v|
+            parser.on_head('--ylim VAL', Array, 'plotting range for the y coordinate') do |v|
               params.ylim = v.take(2)
             end
 
           when :density, :d
-            parser.on('--grid', TrueClass) do |v|
+            parser.on_head('--grid', TrueClass) do |v|
               params.grid = v
             end
-            parser.on('--xlim VAL', Array) do |v|
+            parser.on_head('--xlim VAL', Array, 'plotting range for the x coordinate') do |v|
               params.xlim = v.take(2)
             end
-            parser.on('--ylim VAL', Array) do |v|
+            parser.on_head('--ylim VAL', Array, 'plotting range for the y coordinate') do |v|
               params.ylim = v.take(2)
             end
 
           when :boxplot, :box
-            parser.on('--xlim VAL', Array) do |v|
+            parser.on_head('--xlim VAL', Array, 'plotting range for the x coordinate') do |v|
               params.xlim = v.take(2)
             end
 
           when :colors
-            parser.on('-n', '--names', TrueClass) do |v|
+            parser.on_head('-n', '--names', TrueClass) do |v|
               @color_names = v
             end
 

lib/uplot/plot.rb

@@ -53,7 +53,7 @@ module Uplot
       (method1.to_s + '!').to_sym
     end
 
-    def xyy_plot(data, method1, params)
+    def plot_xyy(data, method1, params)
       headers = data.headers
       series = data.series
       method2 = get_method2(method1)
@@ -70,7 +70,7 @@ module Uplot
       plot
     end
 
-    def xyxy_plot(data, method1, params)
+    def plot_xyxy(data, method1, params)
       headers = data.headers
       series = data.series
       method2 = get_method2(method1)
@@ -87,34 +87,30 @@ module Uplot
       plot
     end
 
-    def lines(data, params, fmt = 'xyy')
+    def plot_fmt(data, fmt, method1, params)
-      check_series_size(data, fmt)
       case fmt
       when 'xyy'
-        xyy_plot(data, :lineplot, params)
+        plot_xyy(data, method1, params)
       when 'xyxy'
-        xyxy_plot(data, :lineplot, params)
+        plot_xyxy(data, method1, params)
+      else
+        raise "Unknown format: #{fmt}"
       end
     end
 
+    def lines(data, params, fmt = 'xyy')
+      check_series_size(data, fmt)
+      plot_fmt(data, fmt, :lineplot, params)
+    end
+
     def scatter(data, params, fmt = 'xyy')
       check_series_size(data, fmt)
-      case fmt
+      plot_fmt(data, fmt, :scatterplot, params)
-      when 'xyy'
-        xyy_plot(data, :scatterplot, params)
-      when 'xyxy'
-        xyxy_plot(data, :scatterplot, params)
-      end
     end
 
     def density(data, params, fmt = 'xyy')
       check_series_size(data, fmt)
-      case fmt
+      plot_fmt(data, fmt, :densityplot, params)
-      when 'xyy'
-        xyy_plot(data, :densityplot, params)
-      when 'xyxy'
-        xyxy_plot(data, :densityplot, params)
-      end
     end
 
     def boxplot(data, params)

lib/uplot/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Uplot
-  VERSION = '0.2.5'
+  VERSION = '0.2.7'
 end