mitio/graph-obd-data.rb

## graph-obd-data.rb
#!/usr/bin/env ruby

require 'csv'
require 'time'
require 'cgi'
require 'erb'
require 'json'

template =
  <<~HTML
    <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title><%= start_time %> - <%= end_time %> (<%= CGI.h filename %>)</title>
        <link rel="stylesheet" type="text/css" href="metrics-graphics-2.15.6/dist/metricsgraphics.css">
        <script src="https://d3js.org/d3.v4.min.js"></script>
        <script src="metrics-graphics-2.15.6/dist/metricsgraphics.min.js"></script>
      </head>
      <body>
        <% datapoints.keys.each do |group| %>
          <div id="<%= sanitize_key(group) %>"></div>
        <% end %>

        <script type="text/javascript">
          <% datapoints.each do |group, group_datapoints| %>
            var combined = <%= group_datapoints.values.to_json %>;
            for (var i = 0; i < combined.length; i++) {
              for (var j = 0; j < combined[i].length; j++) {
                combined[i][j]['date'] = new Date(combined[i][j]['date']);
              }
            }
            MG.data_graphic({
              title: <%= group.to_json %>,
              data: combined,
              width: <%= width || 1000 %>,
              height: 200,
              y_extended_ticks: true,
              legend: <%= group_datapoints.keys.to_json %>,
              target: document.getElementById(<%= sanitize_key(group).to_json %>),
              area: false,
            });
          <% end %>
        </script>
      </body>
    </html>
  HTML

def sanitize_key(string)
  string.strip.downcase.gsub /\W+/, '-'
end

only_o2 = width = nil

ARGV.each do |arg|
  case arg
  when '--only-o2' then only_o2 = true
  when /--width=(\d+)/ then width = $1.to_i
  end
end

ARGV.each do |sensors_data_path|
  next if sensors_data_path.start_with? '--'

  filename = File.basename sensors_data_path
  start_time = end_time = nil
  datapoints = {}

  CSV.foreach(sensors_data_path, headers: true) do |row|
    time = Time.parse row['Time']

    start_time ||= time
    end_time = time

    row.to_h.keys.each do |key|
      next if key == 'Time'
      next if key == 'Bank 1 - Sensor 2 (O2S): Short Term Fuel Trim [%]' # Has no data.
      next if only_o2 && key !~ /Oxygen Sensor/

      group =
        case key
        when /Oxygen Sensor/ then 'Oxygen Sensors'
        else key
        end

      datapoints[group] ||= {}
      datapoints[group][key] ||= []
      datapoints[group][key] << {date: time.to_f * 1000, value: (row[key] || 0).to_f}
    end
  end

  generated_html = ERB.new(template).result(binding)
  bytes_written = File.write "#{filename}.html", generated_html

  puts "Generated #{filename}.html (#{bytes_written} bytes)"
end
	#!/usr/bin/env ruby

	require 'csv'
	require 'time'
	require 'cgi'
	require 'erb'
	require 'json'

	template =
	<<~HTML
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title><%= start_time %> - <%= end_time %> (<%= CGI.h filename %>)</title>
	<link rel="stylesheet" type="text/css" href="metrics-graphics-2.15.6/dist/metricsgraphics.css">
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="metrics-graphics-2.15.6/dist/metricsgraphics.min.js"></script>
	</head>
	<body>
	<% datapoints.keys.each do \|group\| %>
	<div id="<%= sanitize_key(group) %>"></div>
	<% end %>

	<script type="text/javascript">
	<% datapoints.each do \|group, group_datapoints\| %>
	var combined = <%= group_datapoints.values.to_json %>;
	for (var i = 0; i < combined.length; i++) {
	for (var j = 0; j < combined[i].length; j++) {
	combined[i][j]['date'] = new Date(combined[i][j]['date']);
	}
	}
	MG.data_graphic({
	title: <%= group.to_json %>,
	data: combined,
	width: <%= width \|\| 1000 %>,
	height: 200,
	y_extended_ticks: true,
	legend: <%= group_datapoints.keys.to_json %>,
	target: document.getElementById(<%= sanitize_key(group).to_json %>),
	area: false,
	});
	<% end %>
	</script>
	</body>
	</html>
	HTML

	def sanitize_key(string)
	string.strip.downcase.gsub /\W+/, '-'
	end

	only_o2 = width = nil

	ARGV.each do \|arg\|
	case arg
	when '--only-o2' then only_o2 = true
	when /--width=(\d+)/ then width = $1.to_i
	end
	end

	ARGV.each do \|sensors_data_path\|
	next if sensors_data_path.start_with? '--'

	filename = File.basename sensors_data_path
	start_time = end_time = nil
	datapoints = {}

	CSV.foreach(sensors_data_path, headers: true) do \|row\|
	time = Time.parse row['Time']

	start_time \|\|= time
	end_time = time

	row.to_h.keys.each do \|key\|
	next if key == 'Time'
	next if key == 'Bank 1 - Sensor 2 (O2S): Short Term Fuel Trim [%]' # Has no data.
	next if only_o2 && key !~ /Oxygen Sensor/

	group =
	case key
	when /Oxygen Sensor/ then 'Oxygen Sensors'
	else key
	end

	datapoints[group] \|\|= {}
	datapoints[group][key] \|\|= []
	datapoints[group][key] << {date: time.to_f * 1000, value: (row[key] \|\| 0).to_f}
	end
	end

	generated_html = ERB.new(template).result(binding)
	bytes_written = File.write "#{filename}.html", generated_html

	puts "Generated #{filename}.html (#{bytes_written} bytes)"
	end