Let's build the standings table for the English Premier League (EPL) for the 2019/20 season from all matches in the comma-separated values (.csv) format. Example:
- Home - - Away - - Total -
Pld W D L F:A W D L F:A F:A +/- Pts
1. Liverpool FC 38 18 1 0 52:16 14 2 3 33:17 85:33 +52 99
2. Manchester City FC 38 15 2 2 57:13 11 1 7 45:22 102:35 +67 81
3. Manchester United FC 38 10 7 2 40:17 8 5 6 26:19 66:36 +30 66
4. Chelsea FC 38 11 3 5 30:16 9 3 7 39:38 69:54 +15 66
5. Leicester City FC 38 11 4 4 35:17 7 4 8 32:24 67:41 +26 62
6. Tottenham Hotspur FC 38 12 3 4 36:17 4 8 7 25:30 61:47 +14 59
7. Wolverhampton Wanderers FC 38 8 7 4 27:19 7 7 5 24:21 51:40 +11 59
8. Arsenal FC 38 10 6 3 36:24 4 8 7 20:24 56:48 +8 56
9. Sheffield United FC 38 10 3 6 24:15 4 9 6 15:24 39:39 54
10. Burnley FC 38 8 4 7 24:23 7 5 7 19:27 43:50 -7 54
11. Southampton FC 38 6 3 10 21:35 9 4 6 30:25 51:60 -9 52
12. Everton FC 38 8 7 4 24:21 5 3 11 20:35 44:56 -12 49
13. Newcastle United FC 38 6 8 5 20:21 5 3 11 18:37 38:58 -20 44
14. Crystal Palace FC 38 6 5 8 15:20 5 5 9 16:30 31:50 -19 43
15. Brighton & Hove Albion FC 38 5 7 7 20:27 4 7 8 19:27 39:54 -15 41
16. West Ham United FC 38 6 4 9 30:33 4 5 10 19:29 49:62 -13 39
17. Aston Villa FC 38 7 3 9 22:30 2 5 12 19:37 41:67 -26 35
18. AFC Bournemouth 38 5 6 8 22:30 4 1 14 18:35 40:65 -25 34
19. Watford FC 38 6 6 7 22:27 2 4 13 14:37 36:64 -28 34
20. Norwich City FC 38 4 3 12 19:37 1 3 15 7:38 26:75 -49 21
Step 0: Download the free public domain /england dataset package / archive from the football.csv org.
What's the comma-separated values (.csv) format?
It's the world's most popular tabular data interchange format in text.
Values are separated - surprise, surprise - by commas (that is, ,).
One line is one record, that is, one match :-).
Example:
Team 1, FT, HT, Team 2
Liverpool FC, 4-1, 4-0, Norwich City FC
West Ham United FC, 0-5, 0-1, Manchester City FC
AFC Bournemouth, 1-1, 0-0, Sheffield United FC
Burnley FC, 3-0, 0-0, Southampton FC
Crystal Palace FC, 0-0, 0-0, Everton FC
Watford FC, 0-3, 0-1, Brighton & Hove Albion FC
Tottenham Hotspur FC, 3-1, 0-1, Aston Villa FC
Leicester City FC, 0-0, 0-0, Wolverhampton Wanderers FC
Newcastle United FC, 0-1, 0-0, Arsenal FC
Manchester United FC, 4-0, 1-0, Chelsea FC
...
Let's use the eng.1.csv, that is, the English Premier League datafile in the /2010s/2019-20 folder.
Read in all matches with the Match.read_csv method from the sports library / gem:
require 'sports'
matches = Match.read_csv( 'england/2010s/2019-20/eng.1.csv' )
pp matches.size #=> 380
pp matcheswill pretty print (pp):
[#<Sports::Match
@date = "2019-08-09",
@score1 = 4,
@score1i = 4,
@score2 = 1,
@score2i = 0,
@team1 = "Liverpool FC",
@team2 = "Norwich City FC">,
#<Sports::Match
@date = "2019-08-10",
@score1 = 0,
@score1i = 0,
@score2 = 5,
@score2i = 1,
@team1 = "West Ham United FC",
@team2 = "Manchester City FC">,
...]
Now tally up all matches for the standings table with the standings helper class:
standings = Standings.new( matches )
pp standingswill pretty print (pp):
#<Sports::Standings @lines=[
#<Sports::StandingsLine
@away_drawn = 0,
@away_goals_against = 1,
@away_goals_for = 5,
@away_lost = 0,
@away_played = 2,
@away_pts = 6,
@away_won = 2,
@drawn = 0,
@goals_against = 3,
@goals_for = 12,
@home_drawn = 0,
@home_goals_against = 2,
@home_goals_for = 7,
@home_lost = 0,
@home_played = 2,
@home_pts = 6,
@home_won = 2,
@lost = 0,
@played = 4,
@pts = 12,
@rank = 1,
@team = "Liverpool FC",
@won = 4>,
#<Sports::StandingsLine
@away_drawn = 0,
@away_goals_against = 6,
@away_goals_for = 1,
@away_lost = 2,
@away_played = 2,
@away_pts = 0,
@away_won = 0,
@drawn = 0,
@goals_against = 10,
@goals_for = 6,
@home_drawn = 0,
@home_goals_against = 4,
@home_goals_for = 5,
@home_lost = 1,
@home_played = 2,
@home_pts = 3,
@home_won = 1,
@lost = 3,
@played = 4,
@pts = 3,
@rank = 19,
@team = "Norwich City FC",
@won = 1>,
... ]>
Now let's format the standings for humans :-) in the classic more compact table format. Let's start with showing only totals - no home/away break outs yet - in the first simple version:
standings.each do |l|
print '%2d. ' % l.rank
print '%-28s ' % l.team
print '%2d ' % l.played
print '%3d ' % l.won
print '%3d ' % l.drawn
print '%3d ' % l.lost
print '%3d:%-3d ' % [l.goals_for,l.goals_against]
print '%3d' % l.pts
print "\n"
endresulting in:
1. Liverpool FC 38 32 3 3 85:33 99
2. Manchester City FC 38 26 3 9 102:35 81
3. Manchester United FC 38 18 12 8 66:36 66
4. Chelsea FC 38 20 6 12 69:54 66
5. Leicester City FC 38 18 8 12 67:41 62
6. Tottenham Hotspur FC 38 16 11 11 61:47 59
7. Wolverhampton Wanderers FC 38 15 14 9 51:40 59
8. Arsenal FC 38 14 14 10 56:48 56
9. Sheffield United FC 38 14 12 12 39:39 54
10. Burnley FC 38 15 9 14 43:50 54
11. Southampton FC 38 15 7 16 51:60 52
12. Everton FC 38 13 10 15 44:56 49
13. Newcastle United FC 38 11 11 16 38:58 44
14. Crystal Palace FC 38 11 10 17 31:50 43
15. Brighton & Hove Albion FC 38 9 14 15 39:54 41
16. West Ham United FC 38 10 9 19 49:62 39
17. Aston Villa FC 38 9 8 21 41:67 35
18. AFC Bournemouth 38 9 7 22 40:65 34
19. Watford FC 38 8 10 20 36:64 34
20. Norwich City FC 38 5 6 27 26:75 21
To wrap up let's break out the standings for home and away matches for a deluxe version:
print " - Home - - Away - - Total -\n"
print " Pld W D L F:A W D L F:A F:A +/- Pts\n"
standings.each do |l|
print '%2d. ' % l.rank
print '%-28s ' % l.team
print '%2d ' % l.played
print '%2d ' % l.home_won
print '%2d ' % l.home_drawn
print '%2d ' % l.home_lost
print '%3d:%-3d ' % [l.home_goals_for,l.home_goals_against]
print '%2d ' % l.away_won
print '%2d ' % l.away_drawn
print '%2d ' % l.away_lost
print '%3d:%-3d ' % [l.away_goals_for,l.away_goals_against]
print '%3d:%-3d ' % [l.goals_for,l.goals_against]
goals_diff = l.goals_for-l.goals_against
if goals_diff > 0
print '%3s ' % "+#{goals_diff}"
elsif goals_diff < 0
print '%3s ' % "#{goals_diff}"
else ## assume 0
print ' '
end
print '%3d' % l.pts
print "\n"
endresulting in:
- Home - - Away - - Total -
Pld W D L F:A W D L F:A F:A +/- Pts
1. Liverpool FC 38 18 1 0 52:16 14 2 3 33:17 85:33 +52 99
2. Manchester City FC 38 15 2 2 57:13 11 1 7 45:22 102:35 +67 81
3. Manchester United FC 38 10 7 2 40:17 8 5 6 26:19 66:36 +30 66
4. Chelsea FC 38 11 3 5 30:16 9 3 7 39:38 69:54 +15 66
5. Leicester City FC 38 11 4 4 35:17 7 4 8 32:24 67:41 +26 62
6. Tottenham Hotspur FC 38 12 3 4 36:17 4 8 7 25:30 61:47 +14 59
7. Wolverhampton Wanderers FC 38 8 7 4 27:19 7 7 5 24:21 51:40 +11 59
8. Arsenal FC 38 10 6 3 36:24 4 8 7 20:24 56:48 +8 56
9. Sheffield United FC 38 10 3 6 24:15 4 9 6 15:24 39:39 54
10. Burnley FC 38 8 4 7 24:23 7 5 7 19:27 43:50 -7 54
11. Southampton FC 38 6 3 10 21:35 9 4 6 30:25 51:60 -9 52
12. Everton FC 38 8 7 4 24:21 5 3 11 20:35 44:56 -12 49
13. Newcastle United FC 38 6 8 5 20:21 5 3 11 18:37 38:58 -20 44
14. Crystal Palace FC 38 6 5 8 15:20 5 5 9 16:30 31:50 -19 43
15. Brighton & Hove Albion FC 38 5 7 7 20:27 4 7 8 19:27 39:54 -15 41
16. West Ham United FC 38 6 4 9 30:33 4 5 10 19:29 49:62 -13 39
17. Aston Villa FC 38 7 3 9 22:30 2 5 12 19:37 41:67 -26 35
18. AFC Bournemouth 38 5 6 8 22:30 4 1 14 18:35 40:65 -25 34
19. Watford FC 38 6 6 7 22:27 2 4 13 14:37 36:64 -28 34
20. Norwich City FC 38 4 3 12 19:37 1 3 15 7:38 26:75 -49 21
That's it. Bonus: Why not build a standings table for the Bundesliga, La Liga, Ligue 1, Seria A, or your very own league? Yes, you can.
Use
gem install sports
or add the gem to your Gemfile
gem 'sports'
Yes, you can. More than welcome. See Help & Support »