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							<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>RT Table Import</title>
    <link rel="stylesheet" href="styles.css">
</head>

<body>
    <header>
        <h1>RT Table Generator</h1>
        <ul class="nav-tabs">
            <li><a href="RT_Table_NTC.html">NTC</a></li>
            <li><a href="RT_Table_PT100.html">PT100</a></li>
            <li><a href="RT_Table_PT1000.html">PT1000</a></li>
            <li><a href="VT_Table_TJ.html">Thermocouple</a></li>
            <li><a href="RT_Table_Import.html" class="active">Import Data</a></li>
        </ul>
    </header>

    <div class="container">
        <section>
            <h2 class="section-title">RT/VT Data Import Tool</h2>

            <div class="formula">
                <p>This tool allows you to import and analyze temperature-resistance (RT) or temperature-voltage (VT) data from various sources.</p>
                <p>Paste your data in the text area below. The tool supports the following formats:</p>
                <ul style="text-align: left; margin: 10px auto; display: inline-block;">
                    <li>CSV format (comma, tab, or space separated)</li>
                    <li>Excel data (copied directly from spreadsheet)</li>
                    <li>Plain text with temperature and resistance/voltage values</li>
                </ul>
                <p>The first column should be temperature values, and the second column should be resistance or voltage values.</p>
            </div>
        </section>

        <section>
            <h2 class="section-title">Import Data</h2>
            <!-- 数据导入区域 -->
            <div>
                <textarea id="importData" placeholder="Paste your temperature and resistance/voltage data here..."></textarea>
                <div style="margin: 10px 0;">
                    <label for="data-type">Data Type:</label>
                    <select id="data-type" class="tableInput" style="width: auto; margin-right: 20px;">
                        <option value="RT">RT Data (Temperature-Resistance)</option>
                        <option value="VT">VT Data (Temperature-Voltage)</option>
                    </select>

                    <label for="delimiter">Delimiter:</label>
                    <select id="delimiter" class="tableInput" style="width: auto;">
                        <option value="auto">Auto Detect</option>
                        <option value="tab">Tab</option>
                        <option value="comma">Comma</option>
                        <option value="space">Space</option>
                        <option value="semicolon">Semicolon</option>
                    </select>
                </div>
                <button onclick="processImportedData()">Process Data</button>
            </div>
        </section>

        <section>
            <h2 class="section-title">Parameters</h2>
            <!-- 参数设置 -->
            <div>
                <table class="params-table">
                    <tr>
                        <td>
                            <label for="param_name">Name Prefix:</label>
                        </td>
                        <td>
                            <input type="text" id="param_name" name="param_name" value="Custom" class="tableInput">
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="param_T_min">Data Temperature Min (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="param_T_min" name="param_T_min" value="0" class="tableInput" readonly>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="param_T_max">Data Temperature Max (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="param_T_max" name="param_T_max" value="0" class="tableInput" readonly>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="param_step">Data Temperature Step (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="param_step" name="param_step" value="0" class="tableInput" readonly>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="output_T_min">Output Temperature Min (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="output_T_min" name="output_T_min" value="0" class="tableInput">
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="output_T_max">Output Temperature Max (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="output_T_max" name="output_T_max" value="0" class="tableInput">
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="interpolation">Interpolation Method:</label>
                        </td>
                        <td>
                            <select id="interpolation" class="tableInput">
                                <option value="linear">Linear</option>
                                <option value="polynomial">Polynomial</option>
                            </select>
                        </td>
                    </tr>
                    <tr id="polynomial-degree-row" style="display: none;">
                        <td>
                            <label for="polynomial-degree">Polynomial Degree:</label>
                        </td>
                        <td>
                            <input type="number" id="polynomial-degree" name="polynomial-degree" value="3" min="2" max="10" class="tableInput">
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <label for="output-step">Output Step (°C):</label>
                        </td>
                        <td>
                            <input type="number" id="output-step" name="output-step" value="1" min="0.1" step="0.1" class="tableInput">
                        </td>
                    </tr>
                    <tr>
                        <td colspan="2">
                            <button onclick="generateOutputTable()">Generate Output Table</button>
                        </td>
                    </tr>
                </table>
            </div>
        </section>

        <section>
            <h2 class="section-title">Results</h2>

            <!-- 动态生成的表格 -->
            <div style="max-height: 400px; overflow-y: auto; margin-bottom: 20px;">
                <table id="rtTable">
                    <thead>
                        <tr>
                            <th>Temperature (°C)</th>
                            <th id="value-header">Resistance (Ω)</th>
                        </tr>
                    </thead>
                    <tbody>
                        <!-- 数据将通过JavaScript动态插入 -->
                    </tbody>
                </table>
            </div>

            <!-- JSON 数据文本框 -->
            <h3>JSON Data</h3>
            <textarea id="jsonData" readonly></textarea>

            <!-- C语言数组文本框 -->
            <h3>C Language Arrays</h3>
            <textarea id="cArrayData" readonly></textarea>
        </section>
    </div>

    <script>
        // 全局变量
        let importedData = [];
        let processedData = [];
        
        // 页面加载时初始化
        document.addEventListener('DOMContentLoaded', function() {
            // 设置默认数据类型为RT
            document.getElementById('data-type').value = 'RT';
            
            // 初始化输出温度范围
            document.getElementById('output_T_min').value = 0;
            document.getElementById('output_T_max').value = 0;
        });
        
        // 检测分隔符
        function detectDelimiter(text) {
            const lines = text.trim().split(/\r?\n/);
            if (lines.length === 0) return 'tab';
            
            const firstLine = lines[0];
            
            // 检查各种分隔符的出现次数
            const delimiters = {
                'tab': (firstLine.match(/\t/g) || []).length,
                'comma': (firstLine.match(/,/g) || []).length,
                'semicolon': (firstLine.match(/;/g) || []).length,
                'space': (firstLine.match(/ /g) || []).length
            };
            
            // 找出出现次数最多的分隔符
            let maxCount = 0;
            let detectedDelimiter = 'tab';
            
            for (const [delimiter, count] of Object.entries(delimiters)) {
                if (count > maxCount) {
                    maxCount = count;
                    detectedDelimiter = delimiter;
                }
            }
            
            return detectedDelimiter;
        }
        
        // 处理导入的数据
        function processImportedData() {
            const importText = document.getElementById("importData").value.trim();
            if (!importText) {
                alert("Please paste data first!");
                return;
            }
            
            // 获取用户选择的分隔符或自动检测
            let delimiterChoice = document.getElementById("delimiter").value;
            let delimiterChar;
            
            if (delimiterChoice === 'auto') {
                delimiterChoice = detectDelimiter(importText);
            }
            
            // 设置实际的分隔符字符
            switch (delimiterChoice) {
                case 'tab': delimiterChar = '\t'; break;
                case 'comma': delimiterChar = ','; break;
                case 'space': delimiterChar = ' '; break;
                case 'semicolon': delimiterChar = ';'; break;
                default: delimiterChar = '\t';
            }
            
            // 分割文本为行
            const lines = importText.split(/\r?\n/);
            importedData = [];
            
            // 处理每一行
            for (const line of lines) {
                if (!line.trim()) continue; // 跳过空行
                
                // 分割行为列
                let columns;
                if (delimiterChoice === 'space') {
                    // 对于空格分隔，处理多个连续空格的情况
                    columns = line.trim().split(/\s+/);
                } else {
                    columns = line.split(delimiterChar);
                }
                
                // 确保至少有两列
                if (columns.length >= 2) {
                    const temp = parseFloat(columns[0]);
                    const value = parseFloat(columns[1]);
                    
                    // 确保两个值都是有效的数字
                    if (!isNaN(temp) && !isNaN(value)) {
                        importedData.push({ temperature: temp, value: value });
                    }
                }
            }
            
            // 按温度排序
            importedData.sort((a, b) => a.temperature - b.temperature);
            
            // 更新数据类型标题
            const dataType = document.getElementById("data-type").value;
            const valueHeader = document.getElementById("value-header");
            if (dataType === "RT") {
                valueHeader.textContent = "Resistance (Ω)";
            } else {
                valueHeader.textContent = "Voltage (mV)";
            }
            
            // 显示导入的数据
            displayTable(importedData);
            
            // 更新参数
            if (importedData.length > 0) {
                // 设置温度范围
                const minTemp = importedData[0].temperature;
                const maxTemp = importedData[importedData.length - 1].temperature;
                
                document.getElementById("param_T_min").value = minTemp;
                document.getElementById("param_T_max").value = maxTemp;
                
                // 同时更新输出温度范围
                document.getElementById("output_T_min").value = minTemp;
                document.getElementById("output_T_max").value = maxTemp;
                
                // 计算平均步长
                if (importedData.length > 1) {
                    let totalSteps = 0;
                    let stepCount = 0;
                    
                    for (let i = 1; i < importedData.length; i++) {
                        const step = importedData[i].temperature - importedData[i-1].temperature;
                        if (step > 0) {
                            totalSteps += step;
                            stepCount++;
                        }
                    }
                    
                    const avgStep = stepCount > 0 ? (totalSteps / stepCount) : 1;
                    document.getElementById("param_step").value = avgStep.toFixed(2);
                    document.getElementById("output-step").value = avgStep.toFixed(2);
                }
            }
            
            // 显示JSON数据
            displayJsonData(importedData);
        }
        
        // 线性插值函数
        function linearInterpolate(x, x0, y0, x1, y1) {
            return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
        }
        
        // 多项式拟合函数
        function polynomialFit(data, degree) {
            // 简单实现，实际应用中可能需要更复杂的算法
            // 这里使用最小二乘法拟合多项式
            const n = data.length;
            const x = data.map(d => d.temperature);
            const y = data.map(d => d.value);
            
            // 创建矩阵
            const X = [];
            for (let i = 0; i < n; i++) {
                X[i] = [];
                for (let j = 0; j <= degree; j++) {
                    X[i][j] = Math.pow(x[i], j);
                }
            }
            
            // 转置矩阵
            const Xt = [];
            for (let j = 0; j <= degree; j++) {
                Xt[j] = [];
                for (let i = 0; i < n; i++) {
                    Xt[j][i] = X[i][j];
                }
            }
            
            // 计算 Xt * X
            const XtX = [];
            for (let i = 0; i <= degree; i++) {
                XtX[i] = [];
                for (let j = 0; j <= degree; j++) {
                    XtX[i][j] = 0;
                    for (let k = 0; k < n; k++) {
                        XtX[i][j] += Xt[i][k] * X[k][j];
                    }
                }
            }
            
            // 计算 Xt * y
            const Xty = [];
            for (let i = 0; i <= degree; i++) {
                Xty[i] = 0;
                for (let j = 0; j < n; j++) {
                    Xty[i] += Xt[i][j] * y[j];
                }
            }
            
            // 解线性方程组 XtX * coeffs = Xty
            // 使用高斯消元法
            const coeffs = solveLinearSystem(XtX, Xty);
            
            // 返回多项式函数
            return function(x) {
                let result = 0;
                for (let i = 0; i <= degree; i++) {
                    result += coeffs[i] * Math.pow(x, i);
                }
                return result;
            };
        }
        
        // 解线性方程组
        function solveLinearSystem(A, b) {
            const n = b.length;
            const x = new Array(n).fill(0);
            
            // 高斯消元法
            for (let i = 0; i < n; i++) {
                // 寻找主元
                let maxEl = Math.abs(A[i][i]);
                let maxRow = i;
                for (let k = i + 1; k < n; k++) {
                    if (Math.abs(A[k][i]) > maxEl) {
                        maxEl = Math.abs(A[k][i]);
                        maxRow = k;
                    }
                }
                
                // 交换行
                if (maxRow !== i) {
                    [A[i], A[maxRow]] = [A[maxRow], A[i]];
                    [b[i], b[maxRow]] = [b[maxRow], b[i]];
                }
                
                // 消元
                for (let k = i + 1; k < n; k++) {
                    const c = -A[k][i] / A[i][i];
                    for (let j = i; j < n; j++) {
                        if (i === j) {
                            A[k][j] = 0;
                        } else {
                            A[k][j] += c * A[i][j];
                        }
                    }
                    b[k] += c * b[i];
                }
            }
            
            // 回代
            for (let i = n - 1; i >= 0; i--) {
                x[i] = b[i] / A[i][i];
                for (let k = i - 1; k >= 0; k--) {
                    b[k] -= A[k][i] * x[i];
                }
            }
            
            return x;
        }
        
        // 生成输出表格
        function generateOutputTable() {
            if (importedData.length === 0) {
                alert("Please import and process data first!");
                return;
            }
            
            // 使用用户设置的输出温度范围，如果未设置则使用数据的温度范围
            let Tmin = parseFloat(document.getElementById("output_T_min").value);
            let Tmax = parseFloat(document.getElementById("output_T_max").value);
            const dataTmin = parseFloat(document.getElementById("param_T_min").value);
            const dataTmax = parseFloat(document.getElementById("param_T_max").value);
            
            // 验证输出温度范围
            if (isNaN(Tmin) || Tmin < dataTmin) {
                Tmin = dataTmin;
                document.getElementById("output_T_min").value = dataTmin;
            }
            if (isNaN(Tmax) || Tmax > dataTmax) {
                Tmax = dataTmax;
                document.getElementById("output_T_max").value = dataTmax;
            }
            if (Tmin > Tmax) {
                Tmin = dataTmin;
                Tmax = dataTmax;
                document.getElementById("output_T_min").value = dataTmin;
                document.getElementById("output_T_max").value = dataTmax;
                alert("Output temperature min cannot be greater than max. Using data range instead.");
            }
            
            const step = parseFloat(document.getElementById("output-step").value);
            const interpolationMethod = document.getElementById("interpolation").value;
            
            processedData = [];
            
            if (interpolationMethod === "linear") {
                // 线性插值
                for (let T = Tmin; T <= Tmax; T += step) {
                    // 找到T所在的区间
                    let value;
                    
                    // 如果T小于第一个点或大于最后一个点，使用外推
                    if (T <= importedData[0].temperature) {
                        value = importedData[0].value;
                    } else if (T >= importedData[importedData.length - 1].temperature) {
                        value = importedData[importedData.length - 1].value;
                    } else {
                        // 找到T所在的区间
                        for (let i = 0; i < importedData.length - 1; i++) {
                            if (T >= importedData[i].temperature && T <= importedData[i + 1].temperature) {
                                value = linearInterpolate(
                                    T,
                                    importedData[i].temperature,
                                    importedData[i].value,
                                    importedData[i + 1].temperature,
                                    importedData[i + 1].value
                                );
                                break;
                            }
                        }
                    }
                    
                    processedData.push({ temperature: T, value: value });
                }
            } else if (interpolationMethod === "polynomial") {
                // 多项式拟合
                const degree = parseInt(document.getElementById("polynomial-degree").value);
                const polyFunc = polynomialFit(importedData, degree);
                
                for (let T = Tmin; T <= Tmax; T += step) {
                    const value = polyFunc(T);
                    processedData.push({ temperature: T, value: value });
                }
            }
            
            // 显示处理后的数据
            displayTable(processedData);
            displayJsonData(processedData);
            displayCArrayData(processedData);
        }
        
        // 显示表格数据
        function displayTable(data) {
            const tbody = document.getElementById("rtTable").querySelector("tbody");
            tbody.innerHTML = "";  // 清空表格内容
            
            const dataType = document.getElementById("data-type").value;
            
            data.forEach(row => {
                const tr = document.createElement("tr");
                if (dataType === "RT") {
                    tr.innerHTML = `<td>${row.temperature}</td><td>${row.value}</td>`;
                } else {
                    tr.innerHTML = `<td>${row.temperature}</td><td>${row.value}</td>`;
                }
                tbody.appendChild(tr);
            });
        }
        
        // 显示 JSON 数据到文本框
        function displayJsonData(data) {
            const jsonData = JSON.stringify(data, null, 4); // 格式化JSON
            const textarea = document.getElementById("jsonData");
            textarea.value = jsonData;
        }
        
        // 显示 C 语言数组到文本框
        function displayCArrayData(data) {
            if (data.length === 0) return;
            
            const temperatures = data.map(row => row.temperature); // 提取温度值
            const values = data.map(row => row.value);   // 提取值
            
            const dataType = document.getElementById("data-type").value;
            const namePrefix = document.getElementById("param_name").value;
            const Tmin = data[0].temperature;
            const Tmax = data[data.length - 1].temperature;
            const step = parseFloat(document.getElementById("output-step").value);
            
            const prefix = (Tmin < 0 ? 'N' : 'P') + Math.abs(Tmin).toString() + 'to' + (Tmax < 0 ? 'N' : 'P') + Math.abs(Tmax).toString() + '_' + step.toString();
            
            let arrayPrefix, valueArrayName;
            if (dataType === "RT") {
                arrayPrefix = `RT_table_${namePrefix}_${prefix}`;
                valueArrayName = "R";
            } else {
                arrayPrefix = `VT_table_${namePrefix}_${prefix}`;
                valueArrayName = "V";
            }
            
            const cArrayTempSize = `const uint16_t ${arrayPrefix}_size = ${temperatures.length};`;
            const cArrayTemp = `const double ${arrayPrefix}_T[${temperatures.length}] = { ${temperatures.join(", ")} };`;
            const cArrayValue = `const double ${arrayPrefix}_${valueArrayName}[${values.length}] = { ${values.join(", ")} };`;
            
            const textarea = document.getElementById("cArrayData");
            textarea.value = `${cArrayTempSize}\n\n${cArrayTemp}\n\n${cArrayValue}`;
        }
        
        // 监听插值方法选择变化
        document.getElementById("interpolation").addEventListener("change", function() {
            const polynomialRow = document.getElementById("polynomial-degree-row");
            if (this.value === "polynomial") {
                polynomialRow.style.display = "";
            } else {
                polynomialRow.style.display = "none";
            }
        });
    </script>
</body>

</html>