Fix gemspec

* Add the new logo being created

Created by sampo grafiikka
thanks!!!

.github/workflows/ci.yml

@@ -7,10 +7,10 @@ jobs:
     strategy:
       matrix:
         os:   ['ubuntu', 'macos']
-        ruby: [ '2.5', '2.6', '2.7' ]
+        ruby: [ '2.5', '2.6', '2.7', '3.0' ]
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-ruby@v1
+      - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
       - run: gem install bundler

README.md

@@ -1,4 +1,6 @@
-![Logo](https://user-images.githubusercontent.com/5798442/102004318-ec89d280-3d52-11eb-8608-d890b42593f1.png)
+<p align="center">
+  <img src="https://user-images.githubusercontent.com/5798442/103439598-9e952a00-4c81-11eb-881f-67c593bb7861.png" width="75%" height="75%" />
+</p>
 
 ![Build Status](https://github.com/kojix2/youplot/workflows/test/badge.svg)
 [![Gem Version](https://badge.fury.io/rb/youplot.svg)](https://badge.fury.io/rb/youplot)
@@ -18,7 +20,8 @@ gem install youplot
 
 ## Quick Start
 
-`cat data.tsv | uplot <command> [options]`
+* `cat data.tsv | uplot <command> [options]` or
+* `uplot <command> [options] <data.tsv>`
 
 ### barplot
 
@@ -29,7 +32,9 @@ curl -sL https://git.io/ISLANDScsv \
 | uplot bar -d, -t "Areas of the World's Major Landmasses"
 ```
 
-![barplot](https://user-images.githubusercontent.com/5798442/101999903-d36a2d00-3d24-11eb-9361-b89116f44122.png)
+<p align="center">
+<img alt="barplot" src="https://user-images.githubusercontent.com/5798442/101999903-d36a2d00-3d24-11eb-9361-b89116f44122.png">
+</p>
 
 ### histogram
 
@@ -40,7 +45,10 @@ echo -e "from numpy import random;" \
 | python \
 | uplot hist --nbins 20
 ```
-![histogram](https://user-images.githubusercontent.com/5798442/101999820-21cafc00-3d24-11eb-86db-e410d19b07df.png)
+
+<p align="center">
+  <img alt="histogram" src="https://user-images.githubusercontent.com/5798442/101999820-21cafc00-3d24-11eb-86db-e410d19b07df.png">
+</p>
 
 ### lineplot
 
@@ -50,7 +58,9 @@ curl -sL https://git.io/AirPassengers \
 | uplot line -d, -w 50 -h 15 -t AirPassengers --xlim 1950,1960 --ylim 0,600
 ```
 
-![lineplot](https://user-images.githubusercontent.com/5798442/101999825-24c5ec80-3d24-11eb-99f4-c642e8d221bc.png)
+<p align="center">
+  <img alt="lineplot" src="https://user-images.githubusercontent.com/5798442/101999825-24c5ec80-3d24-11eb-99f4-c642e8d221bc.png">
+</p>
 
 ### scatter
 
@@ -60,7 +70,9 @@ curl -sL https://git.io/IRIStsv \
 | uplot scatter -H -t IRIS
 ```
 
-![scatter](https://user-images.githubusercontent.com/5798442/101999827-27284680-3d24-11eb-9903-551857eaa69c.png)
+<p align="center">
+  <img alt="scatter" src="https://user-images.githubusercontent.com/5798442/101999827-27284680-3d24-11eb-9903-551857eaa69c.png">
+</p>
 
 ### density
 
@@ -70,7 +82,9 @@ curl -sL https://git.io/IRIStsv \
 | uplot density -H -t IRIS
 ```
 
-![density](https://user-images.githubusercontent.com/5798442/101999828-2abbcd80-3d24-11eb-902c-2f44266fa6ae.png)
+<p align="center">
+  <img alt="density" src="https://user-images.githubusercontent.com/5798442/101999828-2abbcd80-3d24-11eb-902c-2f44266fa6ae.png">
+</p>
 
 ### boxplot
 
@@ -80,11 +94,13 @@ curl -sL https://git.io/IRIStsv \
 | uplot boxplot -H -t IRIS
 ```
 
-![boxplot](https://user-images.githubusercontent.com/5798442/101999830-2e4f5480-3d24-11eb-8891-728c18bf5b35.png)
+<p align="center">
+  <img alt="boxplot" src="https://user-images.githubusercontent.com/5798442/101999830-2e4f5480-3d24-11eb-8891-728c18bf5b35.png">
+</p>
 
 ### count
 
-In this example, YouPlot counts the number of chromosomes where the gene is located from the human gene annotation file and create a bar chart. The human gene annotation file can be downloaded from the following website.
+In this example, YouPlot counts the number of chromosomes where the gene is located from the human gene annotation file and it creates a bar chart. The human gene annotation file can be downloaded from the following website.
 
 * https://www.gencodegenes.org/human/
 
@@ -94,10 +110,12 @@ cat gencode.v35.annotation.gff3 \
  uplot count -t "The number of human gene annotations per chromosome"  -c blue
 ```
 
-![count](https://user-images.githubusercontent.com/5798442/101999832-30b1ae80-3d24-11eb-96fe-e5000bed1f5c.png)
+<p align="center">
+  <img alt="count" src="https://user-images.githubusercontent.com/5798442/101999832-30b1ae80-3d24-11eb-96fe-e5000bed1f5c.png">
+</p>
 
 Note: `count` is not very fast because it runs in a Ruby script.
-This is fine if the data is small, that is, in most cases. However, if you want to visualize huge data, it is faster to use a combination of common Unix commands as shown below.
+This is fine in most cases, as long as the data size is small. If you want to visualize huge data, it is faster to use a combination of common Unix commands as shown below.
 
 ```sh
 cat gencode.v35.annotation.gff3 | grep -v '#' | grep 'gene' | cut -f1 \
@@ -109,8 +127,8 @@ cat gencode.v35.annotation.gff3 | grep -v '#' | grep 'gene' | cut -f1 \
 
 ### Why YouPlot?
 
-Wouldn't it be a bit of pain to have to run R, Python, Julia, gnuplot or whatever REPL just to check your data?
-YouPlot is a command line tool for this purpose. With YouPlot, you can continue working without leaving your terminal and shell. 
+Wouldn't it be a pain to have to run R, Python, Julia, gnuplot or whatever REPL just to check your data?
+YouPlot is a command line tool for this purpose. With YouPlot, you can continue working without leaving your terminal and shell.
 
 ### how to use YouPlot?
 
@@ -124,17 +142,17 @@ YouPlot is a command line tool for this purpose. With YouPlot, you can continue
 
 ### Where to output the plot?
 
-By default, the plot is output to *standard error output*. 
+By default, the plot is output to *standard error output*.
 The output file or stream for the plot can be specified with the `-o` option.
 
 ### Where to output the input data?
 
-By default, the input data is not output anywhere.
+By default, the input data is not shown anywhere.
 The `-O` option, with no arguments, outputs the input data directly to the standard output. This is useful when passing data to a subsequent pipeline.
 
 ### What types of plots are available?
 
-The following sub-commands are available
+The following sub-commands are available.
 
 | command   | short | how it works                           |
 |-----------|-------|----------------------------------------|
@@ -150,9 +168,29 @@ See Quick Start for `count`.
 
 | command   | short | how it works                                             |
 |-----------|-------|----------------------------------------------------------|
-| count     | c     |  draw a baplot based on the number of occurrences (slow) |
+| count     | c     |  draw a barplot based on the number of occurrences (slow) |
 
-### How to view detailed command line options
+### What if the header line is included?
+
+If your input data contains a header line, you need to specify the `-H` option.
+
+### How to specify the delimiter?
+
+Use the `-d` option. To specify a blank space, you can use `uplot bar -d ' ' data.txt`. You do not need to use `-d` option for tab-delimited text since the default value is tab.
+
+### Is there a way to specify a column as the x-axis or y-axis?
+
+Not yet. In principle, YouPlot treats the first column as the X axis and the second column as the Y axis. When working with multiple series, the first row is the X axis, the second row is series 1, the third row is series 2, and so on. If you pass only one column of data for `line` and `bar`, YouPlot will automatically use a sequential number starting from 1 as the X-axis. The　`--fmt xyy`, `--fmt xyxy` and `--fmt yx` options give you a few more choices. See `youplot <command> --help` for more details. YouPlot has limited functionalities, but you can use shell scripts such as `awk '{print $2, $1}'` to swap lines.
+
+### How to plot real-time data?
+
+Experimental progressive mode is currently under development.
+
+```sh
+ruby -e 'loop{puts rand(100)}' | uplot line --progress
+```
+
+### How to view detailed command line options?
 
 Use `--help` to print command-specific options.
 
@@ -181,6 +219,7 @@ uplot colors
 * [Report bugs](https://github.com/kojix2/youplot/issues)
 * Fix bugs and [submit pull requests](https://github.com/kojix2/youplot/pulls)
 * Write, clarify, or fix documentation
+  * English corrections by native speakers are welcome.
 * Suggest or add new features
 
 

lib/youplot.rb

@@ -2,7 +2,7 @@
 
 require 'unicode_plot'
 require 'youplot/version'
-require 'youplot/dsv_reader'
+require 'youplot/dsv'
 require 'youplot/command'
 
 module YouPlot

lib/youplot/command.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require_relative 'dsv_reader'
+require_relative 'dsv'
 require_relative 'command/parser'
 
 # FIXME
@@ -31,6 +31,14 @@ module YouPlot
       if %i[colors color colours colour].include? @command
         plot = create_plot
         output_plot(plot)
+      elsif options[:progressive]
+        stop = false
+        Signal.trap(:INT) { stop = true }
+        while (input = Kernel.gets)
+          main_progressive(input)
+          break if stop
+        end
+        options[:output].print "\e[0J"
       else
         # Sometimes the input file does not end with a newline code.
         while (input = Kernel.gets(nil))
@@ -52,9 +60,31 @@ module YouPlot
       output_plot(plot)
     end
 
+    def main_progressive(input)
+      output_data(input)
+
+      # FIXME
+      # Worked around the problem of not being able to draw
+      # plots when there is only one header line.
+      if @raw_data.nil?
+        @raw_data = String.new
+        if options[:headers]
+          @raw_data << input
+          return
+        end
+      end
+      @raw_data << input
+
+      # FIXME
+      @data = read_dsv(@raw_data)
+
+      plot = create_plot
+      output_plot_progressive(plot)
+    end
+
     def read_dsv(input)
       input = input.dup.force_encoding(options[:encoding]).encode('utf-8') if options[:encoding]
-      DSVReader.input(input, options[:delimiter], options[:headers], options[:transpose])
+      DSV.parse(input, options[:delimiter], options[:headers], options[:transpose])
     end
 
     def create_plot
@@ -106,5 +136,29 @@ module YouPlot
         end
       end
     end
+
+    def output_plot_progressive(plot)
+      case options[:output]
+      when IO
+        # RefactorMe
+        out = StringIO.new(String.new)
+        def out.tty?
+          true
+        end
+        plot.render(out)
+        lines = out.string.lines
+        lines.each do |line|
+          options[:output].print line.chomp
+          options[:output].print "\e[0K"
+          options[:output].puts
+        end
+        options[:output].print "\e[0J"
+        options[:output].flush
+        n = out.string.lines.size
+        options[:output].print "\e[#{n}F"
+      else
+        raise 'In progressive mode, output to a file is not possible.'
+      end
+    end
   end
 end

lib/youplot/command/options.rb

@@ -2,11 +2,12 @@
 
 module YouPlot
   class Command
-    CmdOptions = Struct.new(
+    Options = Struct.new(
       :delimiter,
       :transpose,
       :headers,
       :pass,
+      :progressive,
       :output,
       :fmt,
       :encoding,

lib/youplot/command/parser.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 require 'optparse'
-require_relative 'cmd_options'
+require_relative 'options'
 require_relative 'plot_params'
 
 module YouPlot
@@ -12,7 +12,7 @@ module YouPlot
       def initialize
         @command = nil
 
-        @options = CmdOptions.new(
+        @options = Options.new(
           delimiter: "\t",
           transpose: false,
           headers: nil,
@@ -82,7 +82,7 @@ module YouPlot
           opt.on('--[no-]labels', TrueClass, 'hide the labels') do |v|
             params.labels = v
           end
-          opt.on('--progress', TrueClass, 'progressive') do |v|
+          opt.on('--progress', TrueClass, 'progressive mode [experimental]') do |v|
             @options[:progressive] = v
           end
           opt.on('--encoding VAL', String, 'Specify the input encoding') do |v|

lib/youplot/dsv.rb

@@ -4,10 +4,10 @@ require 'csv'
 
 module YouPlot
   # Read and interpret Delimiter-separated values format file or stream.
-  module DSVReader
+  module DSV
     module_function
 
-    def input(input, delimiter, headers, transpose)
+    def parse(input, delimiter, headers, transpose)
       arr = parse_as_csv(input, delimiter)
       headers = get_headers(arr, headers, transpose)
       series = get_series(arr, headers, transpose)
@@ -57,16 +57,22 @@ module YouPlot
     end
 
     def get_series(arr, headers, transpose)
-      if transpose
-        if headers
-          arr.map { |row| row[1..-1] }
+      if headers
+        if arr.size > 1
+          if transpose
+            arr.map { |row| row[1..-1] }
+          else
+            transpose2(arr[1..-1])
+          end
         else
-          arr
+          Array.new(arr[0].size, [])
         end
-      elsif headers
-        transpose2(arr[1..-1])
       else
-        transpose2(arr)
+        if transpose
+          arr
+        else
+          transpose2(arr)
+        end
       end
     end
   end

lib/youplot/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module YouPlot
-  VERSION = '0.3.2'
+  VERSION = '0.3.3'
 end

test/youplot/dsv_test.rb

@@ -2,9 +2,9 @@
 
 require_relative '../test_helper'
 
-class YouPlotDSVReaderTest < Test::Unit::TestCase
+class YouPlotDSVTest < Test::Unit::TestCase
   def setup
-    @m = YouPlot::DSVReader
+    @m = YouPlot::DSV
   end
 
   test :transpose2 do
@@ -59,6 +59,8 @@ class YouPlotDSVReaderTest < Test::Unit::TestCase
     assert_equal(nil, @m.get_headers([[1, 2, 3],
                                       [4, 5, 6],
                                       [7, 8, 9]], false, false))
+
+    assert_equal([1, 2, 3], @m.get_headers([[1, 2, 3]], true, false))
   end
 
   test :get_series do
@@ -123,5 +125,7 @@ class YouPlotDSVReaderTest < Test::Unit::TestCase
                   [n, n, 6]], @m.get_series([[1],
                                              [2, 4],
                                              [3, 5, 6]], false, false))
+    
+    assert_equal([[], [] ,[]], @m.get_series([[1, 2, 3]], true, false))
   end
 end

youplot.gemspec

@@ -8,11 +8,8 @@ Gem::Specification.new do |spec|
   spec.authors       = ['kojix2']
   spec.email         = ['2xijok@gmail.com']
 
-  spec.summary       = 'Create Ascii charts on your terminal.'
-  spec.description   = <<~MSG
-    Create ASCII charts on the terminal with data from standard streams in the 
-    pipeline. 
-  MSG
+  spec.summary       = 'A command line tool for Unicode Plotting'
+  spec.description   = 'A command line tool for Unicode Plotting'
   spec.homepage      = 'https://github.com/kojix2/youplot'
   spec.license       = 'MIT'
   spec.required_ruby_version = Gem::Requirement.new('>= 2.4.0')