let text;
if (ci.format === 'percentage') {
text = (100 * ci.val).toFixed(0) + '%';
+ } else if (ci.decimals !== undefined) {
+ text = ci.val.toFixed(ci.decimals);
} else {
text = ci.val.toFixed(2);
}
+ if (ci.unit !== undefined) {
+ text += ' '+ ci.unit;
+ }
let element = add_3cell(tr, text);
let to_x = (val) => { return ci_width * (val - ci.min) / (ci.max - ci.min); };
'turnovers_lost': 0,
'their_clean_holds': 0,
'their_clean_breaks': 0,
+
+ 'touches_for_turnover': 0,
+ 'touches_for_goal': 0,
+ 'time_for_turnover': [],
+ 'time_for_goal': [],
+ 'their_time_for_turnover': [],
+ 'their_time_for_goal': [],
};
let globals = players['globals'];
let we_lost_disc = false;
let they_lost_disc = false;
+ let touches_this_possession = 0;
+ let possession_started = null;
+ let extra_ms_this_possession = 0; // Used at stoppages.
// The last used formations of the given kind, if any; they may be reused
// when the point starts, if nothing else is set.
// Liveness management
if (type === 'pull' || type === 'their_pull' || type === 'restart') {
live_since = t;
- between_points = false;
+ if (type !== 'restart') {
+ between_points = false;
+ }
} else if (type === 'catch' && last_pull_was_ours === null) {
// Someone forgot to add the pull, so we'll need to wing it.
console.log(match['description'] + ' ' + format_time(t) + ': Missing pull on ' + our_score + '\u2013' + their_score + '; pretending to have one.');
last_pull_was_ours = !offense;
between_points = false;
} else if (type === 'goal' || type === 'their_goal' || type === 'stoppage') {
+ if (type === 'goal') {
+ if (keep) ++p.touches;
+ ++touches_this_possession;
+ }
for (const [q,p] of Object.entries(players)) {
if (p.on_field_since === null) {
continue;
we_lost_disc = true;
if (keep && type !== 'goal' && !(type === 'set_defense' && last_pull_was_ours === null)) {
++globals.turnovers_lost;
+ globals.touches_for_turnover += touches_this_possession;
+ if (possession_started != null) globals.time_for_turnover.push((t - possession_started) + extra_ms_this_possession);
+ } else if (keep && type === 'goal') {
+ globals.touches_for_goal += touches_this_possession;
+ if (possession_started != null) globals.time_for_goal.push((t - possession_started) + extra_ms_this_possession);
}
+ touches_this_possession = 0;
+ possession_started = null;
+ extra_ms_this_possession = 0;
} else if (type === 'set_offense' || type === 'their_goal' || type === 'their_throwaway' || type === 'defense' || type === 'interception') {
offense = true;
they_lost_disc = true;
if (keep && type !== 'their_goal' && !(type === 'set_offense' && last_pull_was_ours === null)) {
++globals.turnovers_won;
+ if (possession_started != null) globals.their_time_for_turnover.push((t - possession_started) + extra_ms_this_possession);
+ } else if (keep && type === 'their_goal') {
+ if (possession_started != null) globals.their_time_for_goal.push((t - possession_started) + extra_ms_this_possession);
}
+ touches_this_possession = 0;
+ possession_started = null;
+ extra_ms_this_possession = 0;
}
if (type === 'goal' || type === 'their_goal') {
between_points = true;
we_lost_disc = false;
they_lost_disc = false;
+ touches_this_possession = 0;
}
if (last_offense !== offense && live_since !== null) {
// Switched offense/defense status, so attribute this drive as needed,
}
live_since = t;
}
+ // The rules for possessions are slightly different; we want to start at pulls,
+ // not previous goals.
+ if ((last_offense !== offense && type !== 'goal' && type !== 'their_goal' && live_since !== null) ||
+ type === 'pull' || type === 'their_pull') {
+ possession_started = t;
+ } else if (type === 'stoppage') {
+ if (possession_started !== null) {
+ extra_ms_this_possession = t - possession_started;
+ possession_started = null;
+ }
+ } else if (type === 'restart' && live_since !== null && !between_points) {
+ possession_started = t;
+ }
if (type === 'pull') {
last_pull_was_ours = true;
}
if (keep) ++p.touches;
+ ++touches_this_possession;
if (type === 'goal') {
if (keep) {
if (prev_handler !== null) {
++p.catches;
++p.defenses;
++p.touches;
+ ++touches_this_possession;
}
prev_handler = null;
handler = e['player'];
//
// Modified Wald (recommended by http://www.ine.pt/revstat/pdf/rs120203.pdf
// since our rates are definitely below 2 per point).
+//
+// FIXME: z is ignored.
function make_poisson_ci(val, num, z, inverted)
{
let low = (val == 0) ? 0.0 : ((val - 0.5) - Math.sqrt(val - 0.5)) / num;
};
}
+// Wilson and Hilferty, again recommended for general use in the PDF above
+// (anything from their group “G1” works).
+// https://en.wikipedia.org/wiki/Poisson_distribution#Confidence_interval
+function make_poisson_ci_large(val, num, z)
+{
+ let low = val * Math.pow(1.0 - 1.0 / (9.0 * val) - z / (3.0 * Math.sqrt(val)), 3.0) / num;
+ let high = (val + 1.0) * Math.pow(1.0 - 1.0 / (9.0 * (val + 1.0)) + z / (3.0 * Math.sqrt(val + 1.0)), 3.0) / num;
+
+ // Fix the signs so that we don't get -0.00.
+ low = Math.max(low, 0.0);
+
+ // The display range of 0 to 25.0 is fairly arbitrary. We have no desire here
+ // (this is used for number of touches).
+ let avg = val / num;
+ return {
+ 'val': avg,
+ 'lower_ci': low,
+ 'upper_ci': high,
+ 'min': 0.0,
+ 'max': 25.0,
+ 'desired': 0.0,
+ 'inverted': false,
+ };
+}
+
+// We don't really know what to expect for possessions; it appears roughly
+// lognormal, but my head doesn't work well enough to extract the CI for
+// the estimated sample mean, and now my head spins around whether we do
+// this correctly even for Poisson :-) But we do a simple (non-BCa) bootstrap
+// here, which should give us what we want.
+//
+// FIXME: z is ignored.
+function make_ci_duration(vals, z)
+{
+ // Bootstrap.
+ let sample_means = [];
+ for (let i = 0; i < 300; ++i) {
+ let sum = 0.0;
+ for (let j = 0; j < vals.length; ++j) {
+ sum += vals[Math.floor(Math.random() * vals.length)];
+ }
+ sample_means.push(sum / vals.length);
+ }
+ sample_means.sort();
+
+ // Interpolating here would probably be better, but OK.
+ let low = sample_means[Math.floor(0.025 * sample_means.length)];
+ let high = sample_means[Math.floor(0.975 * sample_means.length)];
+
+ // Find the point estimate of the mean.
+ let sum = 0.0;
+ for (const v of vals) {
+ sum += v;
+ }
+ let avg = sum / vals.length;
+
+ return {
+ 'val': avg / 1000.0,
+ 'lower_ci': low / 1000.0,
+ 'upper_ci': high / 1000.0,
+ 'min': 0.0,
+ 'max': 120.0,
+ 'desired': 0.0,
+ 'inverted': false,
+ 'unit': 'sec',
+ 'decimals': 1,
+ };
+}
+
function make_table_general(players) {
let rows = [];
{
{
let row = document.createElement('tr');
let name = add_3cell(row, 'Turnovers generated', 'name');
- add_3cell(row, '');
add_3cell(row, globals.turnovers_won);
add_3cell(row, '');
add_3cell(row, globals.turnovers_lost);
+ add_3cell(row, '');
rows.push(row);
}
rows.push(row);
}
+ // Touches. We only have information for our team here.
+ {
+ let goals = 0;
+ for (const [q,p] of get_sorted_players(players)) {
+ if (q === 'globals') continue;
+ goals += p.goals;
+ }
+ let row = document.createElement('tr');
+ let name = add_3cell(row, 'Touches per possession (all)', 'name');
+ let touches = globals.touches_for_turnover + globals.touches_for_goal;
+ let possessions = goals + globals.turnovers_lost;
+ add_3cell(row, '');
+ add_3cell_ci(row, make_poisson_ci_large(touches, possessions, z));
+ add_3cell(row, '');
+ add_3cell(row, '');
+ rows.push(row);
+
+ row = document.createElement('tr');
+ add_3cell(row, 'Touches per possession (goals)', 'name');
+ add_3cell(row, '');
+ add_3cell_ci(row, make_poisson_ci_large(globals.touches_for_goal, goals, z));
+ add_3cell(row, '');
+ add_3cell(row, '');
+ rows.push(row);
+
+ row = document.createElement('tr');
+ add_3cell(row, 'Touches per possession (turnovers)', 'name');
+ add_3cell(row, '');
+ add_3cell_ci(row, make_poisson_ci_large(globals.touches_for_turnover, globals.turnovers_lost, z));
+ add_3cell(row, '');
+ add_3cell(row, '');
+ rows.push(row);
+ }
+
+ // Time. Here we have (roughly) for both.
+ {
+ let row = document.createElement('tr');
+ let name = add_3cell(row, 'Time per possession (all)', 'name');
+ let time = globals.time_for_turnover.concat(globals.time_for_goal);
+ let their_time = globals.their_time_for_turnover.concat(globals.their_time_for_goal);
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(time, z));
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(their_time, z));
+ rows.push(row);
+
+ row = document.createElement('tr');
+ add_3cell(row, 'Time per possession (goals)', 'name');
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(globals.time_for_goal, z));
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(globals.their_time_for_goal, z));
+ rows.push(row);
+
+ row = document.createElement('tr');
+ add_3cell(row, 'Time per possession (turnovers)', 'name');
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(globals.time_for_turnover, z));
+ add_3cell(row, '');
+ add_3cell_ci(row, make_ci_duration(globals.their_time_for_turnover, z));
+ rows.push(row);
+ }
+
return rows;
}
projects / pkanalytics / blobdiff