From 6a6f0ced7ff39516eac71744c7b5381b776b6f0d Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 20 May 2023 22:57:12 +0200
Subject: [PATCH] Add offense CIs.

---
 ultimate.js | 44 +++++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 17 deletions(-)

diff --git a/ultimate.js b/ultimate.js
index bb116a2..8da3c24 100644
--- a/ultimate.js
+++ b/ultimate.js
@@ -61,7 +61,14 @@ function add_3cell_ci(tr, ci) {
 		add_3cell(tr, 'N/A');
 		return;  // FIXME: some SVG padding needed
 	}
-	let element = add_3cell(tr, ci.val.toFixed(2));
+
+	let text;
+	if (ci.format === 'percentage') {
+		text = (100 * ci.val).toFixed(0) + '%';
+	} else {
+		text = ci.val.toFixed(2);
+	}
+	let element = add_3cell(tr, text);
 	let to_x = (val) => { return width * (val - ci.min) / (ci.max - ci.min); };
 
 	// Container.
@@ -576,8 +583,15 @@ function make_table_offense(players) {
 	let drops = 0;
 	for (const [q,p] of Object.entries(players)) {
 		if (q === 'globals') continue;
-		let throw_ok = 100 * (1 - p.throwaways / p.num_throws);
-		let catch_ok = 100 * (p.catches / (p.catches + p.drops));
+		let throw_ok = make_binomial_ci(p.num_throws - p.throwaways, p.num_throws, z);
+		let catch_ok = make_binomial_ci(p.catches, p.catches + p.drops, z);
+
+		throw_ok.format = 'percentage';
+		catch_ok.format = 'percentage';
+
+		// Desire at least 90% percentage. Fairly arbitrary.
+		throw_ok.desired = 0.9;
+		catch_ok.desired = 0.9;
 
 		let row = document.createElement('tr');
 		add_3cell(row, p.name, 'name');  // TODO: number?
@@ -586,18 +600,10 @@ function make_table_offense(players) {
 		add_3cell(row, p.hockey_assists);
 		add_3cell(row, p.num_throws);
 		add_3cell(row, p.throwaways);
-		if (p.num_throws > 0) {
-			add_3cell(row, throw_ok.toFixed(0) + '%');
-		} else {
-			add_3cell(row, 'N/A');
-		}
+		add_3cell_ci(row, throw_ok);
 		add_3cell(row, p.catches);
 		add_3cell(row, p.drops);
-		if (p.catches + p.drops > 0) {
-			add_3cell(row, catch_ok.toFixed(0) + '%');
-		} else {
-			add_3cell(row, 'N/A');
-		}
+		add_3cell_ci(row, catch_ok);
 		add_3cell(row, '+' + p.offensive_soft_plus);
 		add_3cell(row, '-' + p.offensive_soft_minus);
 		rows.push(row);
@@ -609,8 +615,12 @@ function make_table_offense(players) {
 	}
 
 	// Globals.
-	let throw_ok = 100 * (1 - throwaways / num_throws);
-	let catch_ok = 100 * (catches / (catches + drops));
+	let throw_ok = make_binomial_ci(num_throws - throwaways, num_throws, z);
+	let catch_ok = make_binomial_ci(catches, catches + drops, z);
+	throw_ok.format = 'percentage';
+	catch_ok.format = 'percentage';
+	throw_ok.desired = 0.9;
+	catch_ok.desired = 0.9;
 
 	let row = document.createElement('tr');
 	add_3cell(row, '');
@@ -619,10 +629,10 @@ function make_table_offense(players) {
 	add_3cell(row, '');
 	add_3cell(row, num_throws);
 	add_3cell(row, throwaways);
-	add_3cell(row, throw_ok.toFixed(0) + '%');
+	add_3cell_ci(row, throw_ok);
 	add_3cell(row, catches);
 	add_3cell(row, drops);
-	add_3cell(row, catch_ok.toFixed(0) + '%');
+	add_3cell_ci(row, catch_ok);
 	add_3cell(row, '');
 	add_3cell(row, '');
 	rows.push(row);
-- 
2.39.2