Football Fantasy Calculator

Football Fantasy Calculator: Optimize Your Team's Performance body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f8f9fa; color: #333; line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: #fff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } header { background-color: #004a99; color: #fff; padding: 20px 0; text-align: center; border-radius: 8px 8px 0 0; margin-bottom: 20px; } header h1 { margin: 0; font-size: 2.5em; } h2, h3 { color: #004a99; margin-top: 1.5em; margin-bottom: 0.5em; } .calculator-section { margin-bottom: 30px; padding: 20px; border: 1px solid #e0e0e0; border-radius: 5px; background-color: #fdfdfd; } .calculator-section h2 { margin-top: 0; text-align: center; color: #004a99; } .input-group { margin-bottom: 15px; display: flex; flex-direction: column; align-items: flex-start; } .input-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #555; } .input-group input[type="number"], .input-group select { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; font-size: 1em; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: #004a99; outline: none; box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2); } .input-group .helper-text { font-size: 0.85em; color: #777; margin-top: 5px; } .error-message { color: #dc3545; font-size: 0.8em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 20px; flex-wrap: wrap; gap: 10px; } .button-group button { padding: 10px 20px; border: none; border-radius: 4px; cursor: pointer; font-size: 1em; transition: background-color 0.3s ease; flex: 1; min-width: 150px; } .btn-calculate { background-color: #004a99; color: white; } .btn-calculate:hover { background-color: #003366; } .btn-reset { background-color: #6c757d; color: white; } .btn-reset:hover { background-color: #5a6268; } .btn-copy { background-color: #28a745; color: white; } .btn-copy:hover { background-color: #218838; } #results { margin-top: 30px; padding: 20px; border: 1px solid #e0e0e0; border-radius: 5px; background-color: #fdfdfd; text-align: center; } #results h3 { margin-top: 0; color: #004a99; } .primary-result { font-size: 2.5em; font-weight: bold; color: #28a745; margin: 15px 0; padding: 15px; background-color: #e9f7ef; border-radius: 5px; display: inline-block; } .intermediate-results div { margin-bottom: 10px; font-size: 1.1em; } .intermediate-results span { font-weight: bold; color: #004a99; } .formula-explanation { font-size: 0.9em; color: #555; margin-top: 15px; padding: 10px; background-color: #f0f0f0; border-radius: 4px; text-align: left; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { padding: 10px; border: 1px solid #ddd; text-align: left; } th { background-color: #004a99; color: white; } tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: #004a99; margin-bottom: 10px; caption-side: top; text-align: left; } #chartContainer { margin-top: 30px; padding: 20px; border: 1px solid #e0e0e0; border-radius: 5px; background-color: #fdfdfd; text-align: center; } #chartContainer canvas { max-width: 100%; height: auto; } .article-content { margin-top: 30px; padding: 20px; border: 1px solid #e0e0e0; border-radius: 5px; background-color: #fdfdfd; } .article-content h2, .article-content h3 { color: #004a99; margin-top: 1.5em; margin-bottom: 0.5em; } .article-content p { margin-bottom: 1em; } .article-content ul, .article-content ol { margin-left: 20px; margin-bottom: 1em; } .article-content li { margin-bottom: 0.5em; } .article-content a { color: #004a99; text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 15px; padding: 10px; background-color: #f0f8ff; border-left: 4px solid #004a99; border-radius: 4px; } .faq-item strong { color: #004a99; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; } .related-links a { font-weight: bold; } .related-links span { font-size: 0.9em; color: #555; display: block; margin-top: 3px; } @media (min-width: 768px) { .button-group { justify-content: flex-end; } .button-group button { margin-left: 10px; } }

Football Fantasy Calculator

Optimize Your Fantasy Football Strategy

Fantasy Player Performance Predictor

Enter a numerical rating for the player (e.g., 75 for a good player).
1 (Very Easy) 2 (Easy) 3 (Medium) 4 (Hard) 5 (Very Hard) Select the difficulty of the upcoming match.
Enter the player's recent performance score (e.g., 7 out of 10).
Enter the opponent team's overall rating.
Estimate the number of minutes the player is expected to play.

Fantasy Points Projection

Projected Goals/Assists:
Base Score:
Form Multiplier:
Formula Used: Projected Fantasy Points = (Base Score * Form Multiplier) + Bonus Points. Base Score is derived from player rating, opponent difficulty, and projected minutes. Form Multiplier adjusts the score based on recent player performance. Bonus Points are added for exceptional contributions like goals and assists.

Performance Trend Analysis

This chart shows the projected fantasy points based on varying player ratings, from 50 to 100, assuming medium match difficulty and average form.
Key Metric Breakdown
Metric Value Description
Projected Fantasy Points Total estimated fantasy points for the match.
Projected Goals/Assists Estimated number of goals and assists the player might contribute.
Base Score Score calculated from player rating, match difficulty, and minutes.
Form Multiplier Factor applied based on the player's recent performance.
Match Difficulty Factor Adjustment based on how challenging the opponent is.

What is a Football Fantasy Calculator?

A football fantasy calculator is a powerful tool designed for fantasy sports enthusiasts, particularly in football (soccer). It helps users estimate the potential fantasy points a player might score in an upcoming match. By inputting various statistical data points and match conditions, the calculator leverages complex algorithms to provide a projected score. This allows fantasy managers to make more informed decisions when selecting players for their squads, setting lineups, and executing trades. The primary goal of a football fantasy calculator is to demystify player performance prediction and give users a data-driven edge in competitive fantasy leagues.

Who should use it: Anyone involved in fantasy football, from casual players looking to improve their weekly scores to serious competitors aiming for league championships. It's beneficial for those who want to move beyond gut feelings and incorporate statistical analysis into their fantasy strategy. It can also be useful for casual fans wanting to better understand player value and match dynamics.

Common misconceptions: A frequent misconception is that a football fantasy calculator guarantees accurate predictions. While these tools significantly improve the odds of making good choices, football is inherently unpredictable. Unexpected events, injuries, or sudden changes in player form can always influence outcomes. Another misconception is that all calculators use the same logic; in reality, the algorithms can vary widely in complexity and the data they consider.

Football Fantasy Calculator Formula and Mathematical Explanation

The core of a football fantasy calculator lies in its predictive formula. While specific implementations vary, a common approach involves several key components:

Step-by-step derivation:

  1. Base Player Score: This is calculated using the player's inherent quality (Player Rating) and adjusted for the difficulty of the opponent. A higher player rating and an easier opponent contribute to a higher base score.
  2. Match Difficulty Adjustment: The opponent's strength significantly impacts a player's potential. A tougher opponent reduces the likelihood of high performance.
  3. Form Multiplier: A player's recent performance is a strong indicator of their current ability. This multiplier boosts or reduces the score based on their form.
  4. Minutes Played Projection: The more minutes a player is on the field, the more opportunities they have to accumulate fantasy points. This is factored into the overall projection.
  5. Bonus Points: Specific in-game actions like scoring goals, providing assists, or keeping clean sheets (for defenders/goalkeepers) add bonus points.
  6. Final Projection: The final projected fantasy points are a combination of the adjusted base score, form multiplier, and any anticipated bonus points.

Variable Explanations:

Variables Used in Fantasy Point Calculation
Variable Meaning Unit Typical Range
Player Rating An overall assessment of the player's skill and ability. Score (0-100) 10 – 100
Match Difficulty The perceived challenge level of the opponent team. Scale (1-5) 1 – 5
Player's Recent Form A measure of the player's performance in recent matches. Score (0-10) 0 – 10
Opponent Team Rating The overall strength rating of the opposing team. Score (0-100) 20 – 95
Projected Minutes Played Estimated time the player will be on the field. Minutes 0 – 90+
Projected Goals/Assists (PGA) Estimated number of goals and assists. Count 0.0 – 2.0
Projected Fantasy Points (PFP) The final calculated fantasy point output. Points 0 – 20+

Practical Examples (Real-World Use Cases)

Let's illustrate how the football fantasy calculator works with practical scenarios:

Example 1: Star Striker vs. Weak Defense

  • Player: A top striker with a Player Rating of 95.
  • Match: Playing against a team with a low Opponent Team Rating of 40 and Match Difficulty of 1 (Very Easy).
  • Form: The striker is in excellent form, with a Player's Recent Form of 9/10.
  • Minutes: Expected to play the full 90 minutes.

Calculator Input: Player Rating: 95, Match Difficulty: 1, Player's Recent Form: 9, Opponent Rating: 40, Projected Minutes: 90.

Calculator Output: High Projected Fantasy Points (e.g., 18.5), High Projected Goals/Assists (e.g., 1.5), High Base Score, High Form Multiplier.

Interpretation: This player is a prime candidate for captaincy or a high-priority transfer due to the favorable matchup and his own excellent form. The calculator highlights his potential for a significant point haul.

Example 2: Midfielder in a Tough Fixture

  • Player: A creative midfielder with a Player Rating of 80.
  • Match: Facing a strong opponent with an Opponent Team Rating of 85 and Match Difficulty of 4 (Hard).
  • Form: The midfielder has been inconsistent, with a Player's Recent Form of 5/10.
  • Minutes: Projected to play 70 minutes.

Calculator Input: Player Rating: 80, Match Difficulty: 4, Player's Recent Form: 5, Opponent Rating: 85, Projected Minutes: 70.

Calculator Output: Moderate Projected Fantasy Points (e.g., 6.2), Lower Projected Goals/Assists (e.g., 0.3), Moderate Base Score, Lower Form Multiplier.

Interpretation: While the player is talented, the difficult fixture and average form suggest a lower point ceiling. Fantasy managers might consider alternative options or use this player as a differential pick, understanding the risks involved. This demonstrates how the football fantasy calculator helps manage expectations.

How to Use This Football Fantasy Calculator

Using our football fantasy calculator is straightforward and designed to provide actionable insights:

  1. Input Player Data: Enter the specific details for the player you are analyzing. This includes their overall rating, recent form, and projected minutes.
  2. Input Match Data: Provide information about the upcoming match, such as the opponent's team rating and the perceived difficulty of the fixture.
  3. Click 'Calculate Points': Once all fields are populated, click the button to generate the projection.
  4. Review Results: Examine the primary projected fantasy points, intermediate values (like Base Score and Form Multiplier), and the projected goals/assists.
  5. Analyze the Chart and Table: Use the dynamic chart to visualize potential performance across different player ratings and refer to the table for a detailed breakdown of the metrics used in the calculation.
  6. Make Informed Decisions: Use the projected points and analysis to decide whether to start the player, bench them, or consider them for a transfer.

How to read results: The primary result is your estimated total fantasy points. Higher numbers indicate a greater potential for a good score. Intermediate values help you understand *why* the projection is what it is – a high base score suggests a good matchup, while a high form multiplier indicates current player momentum.

Decision-making guidance: If the projected points are significantly higher than other available options, the player is likely a strong start. If the projection is low, especially against a tough opponent, consider benching them or looking for alternatives. Use the calculator in conjunction with your league's scoring system for the most accurate assessment.

Key Factors That Affect Football Fantasy Calculator Results

Several factors influence the accuracy and output of a football fantasy calculator:

  1. Player Consistency: A player who consistently performs well will have a more reliable projection than a highly volatile player. Our calculator uses recent form, but historical consistency is also key.
  2. Team Tactics and Formation: A player's role within their team's tactical setup can drastically affect their fantasy output. For example, a winger instructed to attack frequently will have different potential than a defensive midfielder.
  3. Injuries and Suspensions: While not always captured in basic inputs, actual injuries or suspensions to key players (on either team) can dramatically alter match dynamics and player availability.
  4. Home vs. Away Advantage: Some players and teams perform significantly better at home. This psychological and environmental factor can influence performance metrics.
  5. Fixture Congestion: Playing multiple games in a short period can lead to player fatigue, potentially affecting performance and minutes played. This might necessitate rotation by the manager.
  6. Set-Piece Responsibility: Players who take corners, free kicks, or penalties often have a higher potential for assists and goals, directly impacting fantasy points. This is a crucial detail often embedded within player ratings or form.
  7. Managerial Changes: A new manager can implement different tactics, formations, or player roles, leading to unpredictable shifts in performance for individuals and the team.
  8. Underlying Statistics (xG, xA): Advanced metrics like Expected Goals (xG) and Expected Assists (xA) provide a deeper insight into a player's performance quality beyond raw output, offering a more robust basis for prediction than simple ratings.

Frequently Asked Questions (FAQ)

Q1: How accurate are these football fantasy calculator predictions?

A: Predictions are estimates based on available data. While they significantly improve decision-making, football remains unpredictable. Aim for trends and potential rather than guaranteed outcomes.

Q2: Can I use this calculator for any fantasy football league?

A: The calculator provides general projections. You should always cross-reference the output with your specific league's scoring rules, as point values can vary.

Q3: What does 'Match Difficulty' really mean?

A: It's a subjective rating based on the opponent's historical performance, current form, and perceived strength. A '5' indicates a very challenging match, while a '1' suggests a favorable one.

Q4: How is 'Player's Recent Form' calculated?

A: It's typically an average or weighted score based on the player's performance metrics (goals, assists, key passes, defensive actions) over their last 3-5 matches.

Q5: Should I always start the player with the highest projected points?

A: Not necessarily. Consider your league's scoring system, potential for bonus points (e.g., clean sheets for defenders), and risk factors like potential red cards or injuries.

Q6: What if a player is injured during the match?

A: The calculator projects points based on expected play. An unexpected injury mid-game would obviously halt point accumulation. Always check team news before deadlines.

Q7: How do I input data for goalkeepers or defenders?

A: While the core inputs are similar, remember that defensive players score points differently (e.g., clean sheets, saves). Adjust your expectations and consider defensive stats when rating them.

Q8: Can this calculator predict exact scores?

A: No, this is a football fantasy calculator focused on fantasy points, not the final match score. Fantasy points are derived from specific in-game actions relevant to the fantasy scoring system.

var chartInstance = null; // Global variable to hold chart instance function validateInput(id, min, max, errorId, isFloat = false) { var inputElement = document.getElementById(id); var value = inputElement.value.trim(); var errorElement = document.getElementById(errorId); var isValid = true; errorElement.style.display = 'none'; // Hide error initially if (value === "") { errorElement.textContent = "This field cannot be empty."; errorElement.style.display = 'block'; isValid = false; } else { var numValue; if (isFloat) { numValue = parseFloat(value); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid number."; errorElement.style.display = 'block'; isValid = false; } } else { numValue = parseInt(value, 10); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid integer."; errorElement.style.display = 'block'; isValid = false; } } if (isValid) { if (numValue max) { errorElement.textContent = "Value out of range. Please enter between " + min + " and " + max + "."; errorElement.style.display = 'block'; isValid = false; } } } return isValid; } function calculateFantasyPoints() { // Clear previous errors document.getElementById('playerRatingError').style.display = 'none'; document.getElementById('matchDifficultyError').style.display = 'none'; document.getElementById('formPlayerError').style.display = 'none'; document.getElementById('opponentRatingError').style.display = 'none'; document.getElementById('minutesPlayedError').style.display = 'none'; // Validate inputs var isValidPlayerRating = validateInput('playerRating', 0, 100, 'playerRatingError'); var isValidMatchDifficulty = validateInput('matchDifficulty', 1, 5, 'matchDifficultyError'); var isValidFormPlayer = validateInput('formPlayer', 0, 10, 'formPlayerError'); var isValidOpponentRating = validateInput('opponentRating', 0, 100, 'opponentRatingError'); var isValidMinutesPlayed = validateInput('minutesPlayed', 0, 120, 'minutesPlayedError'); // Allow slightly over 90 for potential extra time if (!isValidPlayerRating || !isValidMatchDifficulty || !isValidFormPlayer || !isValidOpponentRating || !isValidMinutesPlayed) { return; // Stop calculation if any validation fails } var playerRating = parseInt(document.getElementById('playerRating').value); var matchDifficulty = parseInt(document.getElementById('matchDifficulty').value); var formPlayer = parseInt(document.getElementById('formPlayer').value); var opponentRating = parseInt(document.getElementById('opponentRating').value); var minutesPlayed = parseInt(document.getElementById('minutesPlayed').value); // — Calculation Logic — // 1. Base Score Calculation // Adjust player rating based on opponent strength and match difficulty var opponentFactor = (100 – opponentRating) / 100; // Higher factor for weaker opponents var difficultyPenalty = (matchDifficulty – 1) * 0.1; // Penalty increases with difficulty var baseScore = (playerRating * opponentFactor) – difficultyPenalty; baseScore = Math.max(0, baseScore); // Ensure base score is not negative // 2. Form Multiplier // Scale form (0-10) to a multiplier (e.g., 0.7 to 1.3) var formMultiplier = 0.7 + (formPlayer / 10) * 0.6; // Min 0.7, Max 1.3 formMultiplier = Math.max(0.7, Math.min(1.3, formMultiplier)); // Clamp between 0.7 and 1.3 // 3. Minutes Played Impact // Scale score based on minutes played, capping at 90 minutes for full impact var minutesFactor = Math.min(minutesPlayed, 90) / 90; var scoreWithMinutes = baseScore * minutesFactor; // 4. Projected Goals/Assists (Simplified) // This is a very rough estimate based on player rating and opponent difficulty var projectedGAs = (playerRating / 100) * (opponentFactor * 1.5); // More likely against weaker teams projectedGAs = Math.max(0, projectedGAs); projectedGAs = Math.min(projectedGAs, 2.5); // Cap potential GAs // 5. Bonus Points (Simplified – based on GAs) var bonusPoints = projectedGAs * 5; // Assign points for GAs // 6. Final Projected Fantasy Points var projectedFantasyPoints = (scoreWithMinutes * formMultiplier) + bonusPoints; projectedFantasyPoints = Math.max(0, projectedFantasyPoints); // Ensure non-negative // — Update Display — document.getElementById('primaryResult').textContent = projectedFantasyPoints.toFixed(2); document.getElementById('projectedGAs').textContent = projectedGAs.toFixed(2); document.getElementById('baseScore').textContent = baseScore.toFixed(2); document.getElementById('formMultiplier').textContent = formMultiplier.toFixed(2); // Update table document.getElementById('tablePoints').textContent = projectedFantasyPoints.toFixed(2); document.getElementById('tableGAs').textContent = projectedGAs.toFixed(2); document.getElementById('tableBaseScore').textContent = baseScore.toFixed(2); document.getElementById('tableFormMultiplier').textContent = formMultiplier.toFixed(2); document.getElementById('tableMatchFactor').textContent = (1 – difficultyPenalty).toFixed(2); // Representing the penalty effect updateChart(); } function resetCalculator() { document.getElementById('playerRating').value = 75; document.getElementById('matchDifficulty').value = 3; document.getElementById('formPlayer').value = 7; document.getElementById('opponentRating').value = 60; document.getElementById('minutesPlayed').value = 90; // Clear errors document.getElementById('playerRatingError').style.display = 'none'; document.getElementById('matchDifficultyError').style.display = 'none'; document.getElementById('formPlayerError').style.display = 'none'; document.getElementById('opponentRatingError').style.display = 'none'; document.getElementById('minutesPlayedError').style.display = 'none'; // Reset results display document.getElementById('primaryResult').textContent = '–'; document.getElementById('projectedGAs').textContent = '–'; document.getElementById('baseScore').textContent = '–'; document.getElementById('formMultiplier').textContent = '–'; document.getElementById('tablePoints').textContent = '–'; document.getElementById('tableGAs').textContent = '–'; document.getElementById('tableBaseScore').textContent = '–'; document.getElementById('tableFormMultiplier').textContent = '–'; document.getElementById('tableMatchFactor').textContent = '–'; // Reset chart if it exists if (chartInstance) { chartInstance.destroy(); chartInstance = null; } var canvas = document.getElementById('fantasyChart'); var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear canvas content } function copyResults() { var primaryResult = document.getElementById('primaryResult').textContent; var projectedGAs = document.getElementById('projectedGAs').textContent; var baseScore = document.getElementById('baseScore').textContent; var formMultiplier = document.getElementById('formMultiplier').textContent; var assumptions = "Key Assumptions:\n"; assumptions += "- Player Rating: " + document.getElementById('playerRating').value + "\n"; assumptions += "- Match Difficulty: " + document.getElementById('matchDifficulty').options[document.getElementById('matchDifficulty').selectedIndex].text + "\n"; assumptions += "- Player Form: " + document.getElementById('formPlayer').value + "/10\n"; assumptions += "- Opponent Rating: " + document.getElementById('opponentRating').value + "\n"; assumptions += "- Projected Minutes: " + document.getElementById('minutesPlayed').value + "\n"; var resultsText = "— Football Fantasy Projection —\n\n"; resultsText += "Projected Fantasy Points: " + primaryResult + "\n"; resultsText += "Projected Goals/Assists: " + projectedGAs + "\n"; resultsText += "Base Score: " + baseScore + "\n"; resultsText += "Form Multiplier: " + formMultiplier + "\n\n"; resultsText += assumptions; // Use a temporary textarea to copy text var textArea = document.createElement("textarea"); textArea.value = resultsText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied!' : 'Copy failed'; console.log('Copy command was ' + msg); // Optionally show a temporary message to the user var copyButton = document.querySelector('.btn-copy'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 2000); } catch (err) { console.error('Fallback: Oops, unable to copy', err); } document.body.removeChild(textArea); } function updateChart() { var canvas = document.getElementById('fantasyChart'); var ctx = canvas.getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } var playerRating = parseInt(document.getElementById('playerRating').value); var matchDifficulty = parseInt(document.getElementById('matchDifficulty').value); var formPlayer = parseInt(document.getElementById('formPlayer').value); var opponentRating = parseInt(document.getElementById('opponentRating').value); var minutesPlayed = parseInt(document.getElementById('minutesPlayed').value); var labels = []; var dataSeries1 = []; // Projected Points var dataSeries2 = []; // Projected GAs // Simulate player rating changes from 50 to 100 for (var pr = 50; pr <= 100; pr += 5) { labels.push(pr); // Recalculate points for this simulated rating var simulatedBaseScore = (pr * ((100 – opponentRating) / 100)) – ((matchDifficulty – 1) * 0.1); simulatedBaseScore = Math.max(0, simulatedBaseScore); var simulatedFormMultiplier = 0.7 + (formPlayer / 10) * 0.6; simulatedFormMultiplier = Math.max(0.7, Math.min(1.3, simulatedFormMultiplier)); var simulatedMinutesFactor = Math.min(minutesPlayed, 90) / 90; var simulatedScoreWithMinutes = simulatedBaseScore * simulatedMinutesFactor; var simulatedProjectedGAs = (pr / 100) * (((100 – opponentRating) / 100) * 1.5); simulatedProjectedGAs = Math.max(0, simulatedProjectedGAs); simulatedProjectedGAs = Math.min(simulatedProjectedGAs, 2.5); var simulatedBonusPoints = simulatedProjectedGAs * 5; var simulatedProjectedFantasyPoints = (simulatedScoreWithMinutes * simulatedFormMultiplier) + simulatedBonusPoints; simulatedProjectedFantasyPoints = Math.max(0, simulatedProjectedFantasyPoints); dataSeries1.push(simulatedProjectedFantasyPoints); dataSeries2.push(simulatedProjectedGAs); } chartInstance = new Chart(ctx, { type: 'line', data: { labels: labels, datasets: [{ label: 'Projected Fantasy Points', data: dataSeries1, borderColor: '#004a99', backgroundColor: 'rgba(0, 74, 153, 0.1)', fill: true, tension: 0.1 }, { label: 'Projected Goals/Assists', data: dataSeries2, borderColor: '#28a745', backgroundColor: 'rgba(40, 167, 69, 0.1)', fill: true, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Value' } }, x: { title: { display: true, text: 'Player Rating' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Fantasy Points vs. Player Rating' } } } }); } // Initial calculation and chart update on page load document.addEventListener('DOMContentLoaded', function() { calculateFantasyPoints(); // Ensure chart is updated after initial calculation updateChart(); }); // Simple Chart.js integration (assuming Chart.js library is available or included) // For a pure HTML/JS solution without external libraries, a custom SVG or Canvas drawing would be needed. // Since Chart.js is common and simplifies charting, we'll assume its availability for this example. // If Chart.js is NOT available, this part needs to be replaced with manual canvas drawing. // — Placeholder for manual Canvas drawing if Chart.js is not allowed — // If Chart.js is not available, you would need to manually draw lines, points, and axes on the canvas. // This involves calculating coordinates based on data values and canvas dimensions. // Example: /* function drawManualChart() { var canvas = document.getElementById('fantasyChart'); var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear canvas // … (logic to draw axes, labels, lines based on dataSeries1 and dataSeries2) … // This is significantly more complex than using a library. } */ // For this implementation, we'll rely on Chart.js. If it's not present, the chart won't render. // To make this truly self-contained without external JS, the chart drawing logic needs to be implemented manually. // Given the constraints, using Chart.js is the most practical way to achieve a dynamic chart. // If Chart.js is not permitted, please specify, and I will provide a pure Canvas API drawing implementation. // Add Chart.js library script tag if not already included in the page's // This is a common practice for using Chart.js. If this HTML is part of a larger system // where Chart.js is already loaded, this line can be omitted. if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js'; script.onload = function() { // Re-run calculations and chart update after Chart.js is loaded calculateFantasyPoints(); updateChart(); }; document.head.appendChild(script); }

Leave a Comment