25:["$","title",null,{"children":"二手房挂牌数据分析 | hidehalo's Workspace | Observable"}] 49:[{"id":"c7fdeb191f2a5205b22cc51f5978b51f8226f3440087d7fb71106ae7fe746b909b397f6646aaedf6304c9274b1c09d73f5d6d649c30ca5b5181ee2f3fccd1374","href":"https://static.observableusercontent.com/files/c7fdeb191f2a5205b22cc51f5978b51f8226f3440087d7fb71106ae7fe746b909b397f6646aaedf6304c9274b1c09d73f5d6d649c30ca5b5181ee2f3fccd1374","name":"重庆-华润二十四城嘉悦府-挂牌列表.csv","type":"text/csv","lastModified":1699373405950.119,"size":15319},{"id":"30c3a0a4603c742a0ea7e42020d7807f7f431c7e8bb8f6ac1ba8fed90eeb44b992ec9190e1b7e04daeca2519984230cb97be7cce39698ff893ab5f69e5dbb768","href":"https://static.observableusercontent.com/files/30c3a0a4603c742a0ea7e42020d7807f7f431c7e8bb8f6ac1ba8fed90eeb44b992ec9190e1b7e04daeca2519984230cb97be7cce39698ff893ab5f69e5dbb768","name":"重庆-华润二十四城五期-挂牌列表.csv","type":"text/csv","lastModified":1699373698997.305,"size":6170},{"id":"2d05803db9f18b4471bfbc794d20f8d0db568edfa37bd3f493186dc327f3678fa668dbf5e7ffc23277694532d24dc0a66ce7e487291c9011fa89641a09e73257","href":"https://static.observableusercontent.com/files/2d05803db9f18b4471bfbc794d20f8d0db568edfa37bd3f493186dc327f3678fa668dbf5e7ffc23277694532d24dc0a66ce7e487291c9011fa89641a09e73257","name":"重庆-华润二十四城三期-挂牌列表.csv","type":"text/csv","lastModified":1699373717562.217,"size":7710},{"id":"9ffa0617c0f7180374aa0b03e961e85adad1994f42960d9ade8303e8ee42e9be458f147c6f7205d6610fdbe147f33256d37071409e681c6641e773c8669f55c6","href":"https://static.observableusercontent.com/files/9ffa0617c0f7180374aa0b03e961e85adad1994f42960d9ade8303e8ee42e9be458f147c6f7205d6610fdbe147f33256d37071409e681c6641e773c8669f55c6","name":"重庆-华润二十四城-挂牌列表.csv","type":"text/csv","lastModified":1699373801880.365,"size":28042}] 29:{"id":"4ea8e1661a5bcd52","slug":null,"title":"二手房挂牌数据分析","thumbnail":"7b033a93326c17c8b5896b93e8d44cd88c6dc228c860285a1eb666b53e16e661","access_level":"public","create_time":"$D2023-11-07T15:35:21.496Z","update_time":"$D2025-05-07T15:06:17.313Z","view_time":null,"first_public_time":"$D2023-11-08T12:31:39.724Z","has_unpublished_edits":null,"fork":{"id":"ee9e4fb45c009de1","slug":"search-table","title":"Search + Table","owner":{"id":"f35c755083683fe5","login":"observablehq","name":"Observable"}},"stars":1,"starred":false,"owner":{"type":"team","id":"84b86532449eee03","login":"hidehalo-ws","name":"hidehalo's 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\"auto\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"houseDataTerm2","database":"$undefined"},{"id":72,"value":"houseDataTerm5 = await FileAttachment(\"重庆-华润二十四城五期-挂牌列表.csv\").csv({typed: \"auto\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"houseDataTerm5","database":"$undefined"},{"id":73,"value":"houseDataTerm3 = await FileAttachment(\"重庆-华润二十四城三期-挂牌列表.csv\").csv({typed: \"auto\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"houseDataTerm3","database":"$undefined"},{"id":76,"value":"houseDataWhole = await FileAttachment(\"重庆-华润二十四城-挂牌列表.csv\").csv({typed: \"auto\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"houseDataWhole","database":"$undefined"},{"id":82,"value":"houseDataWhole","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":87,"value":"function mergeData(...data) {\n let hash = new Map()\n let result = [];\n for (let dataChunk of data) {\n for (let dataRow of dataChunk) {\n let dataHashKey = Object.values(dataRow);\n if (!hash.has(dataHashKey)) {\n hash.set(dataHashKey, true)\n result.push(dataRow)\n }\n }\n }\n return result\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":94,"value":"houseDataMerged = mergeData(houseDataTerm2, houseDataTerm3, houseDataTerm5)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":97,"value":"Inputs.table(houseDataMerged)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":273,"value":"## 月度挂牌情况","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":275,"value":"Plot.plot({\n width,\n marks: [\n Plot.rectY(\n houseDataMerged,\n Plot.binX(\n { y: \"count\" },\n { x: \"挂牌日期\", y: \"挂牌均价(元/m²)\", fill: \"#ff5375\", tip: true }\n )\n ),\n Plot.lineY(houseDataMerged, \n Plot.binX(\n { y: \"count\" },\n { x: \"挂牌日期\", y: \"挂牌均价(元/m²)\" }\n )\n ),\n Plot.ruleY([0])\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":163,"value":"function histogram(houseData) {\n let result = {}\n for (let dataRow of houseData) {\n if (result[dataRow['户型']] === undefined) {\n result[dataRow['户型']] = 0\n }\n result[dataRow['户型']]++\n }\n let transformResult = []\n for (let weight in result) {\n transformResult.push({\n weight,\n count: result[weight]\n })\n }\n return transformResult\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":167,"value":"histogramHouseData = histogram(houseDataMerged)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":157,"value":"Plot.plot({\n width,\n marks: [\n Plot.barY(histogramHouseData, {y: \"count\", x: \"weight\"}),\n Plot.ruleY([0])\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":193,"value":"moment = require(\"moment\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":304,"value":"## 整体挂牌均价年走势","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":159,"value":"Plot.plot({\n x: {transform: (x) => moment(x).format(\"YYYY\")},\n y: {transform: (y) => y /1000, label: \"挂牌均价（千元/m²）\"},\n height: 200,\n width,\n marks: [\n Plot.dot(houseDataMerged, {x: \"挂牌日期\", y: \"挂牌均价(元/m²)\", stroke: \"挂牌均价(元/m²)\"}),\n \n Plot.linearRegressionY(houseDataMerged, {y: \"挂牌均价(元/m²)\", x: \"挂牌日期\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":226,"value":"houseDataMergedSmall = houseDataMerged.filter(item => {\n return item[\"挂牌面积(m²)\"] <= 50\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":306,"value":"## 小户型挂牌年走势","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":232,"value":"Plot.plot({\n x: {transform: (x) => moment(x).format(\"YYYY\")},\n y: {transform: (y) => y /1000, label: \"挂牌均价（千元/m²）\"},\n height: 200,\n width,\n marks: [\n Plot.dot(houseDataMergedSmall, {x: \"挂牌日期\", y: \"挂牌均价(元/m²)\", stroke: \"挂牌均价(元/m²)\"}),\n Plot.linearRegressionY(houseDataMergedSmall, {y: \"挂牌均价(元/m²)\", x: \"挂牌日期\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":251,"value":"Plot.windowY(12, {x: \"挂牌日期\", y: \"挂牌均价(元/m²)\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":311,"value":"function equalInstallmentPaymentCurve(interestRate, totalLoanTerm) {\n let monthlyInterestRate = interestRate / 12 / 100;\n\n return (\n Math.pow(1 + monthlyInterestRate, totalLoanTerm) /\n (Math.pow(1 + monthlyInterestRate, totalLoanTerm) - 1)\n );\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":316,"value":"loanTermSetIter = Array.from({ length: 360 }, (_, i) => {\n if (i == 119 || i == 239 || i == 359) return i + 1;\n return;\n}).filter((item) => (item ? true : false))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":319,"value":"function generateCurveSet(loanSimpleRate, loanTermSet) {\n let curveSet = [];\n for (let loanTerm of loanTermSet) {\n curveSet.push({\n 总期数: loanTerm,\n 利息乘数: equalInstallmentPaymentCurve(loanSimpleRate, loanTerm )\n });\n }\n return curveSet;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":327,"value":"curveSet = generateCurveSet(3.55, loanTermSetIter)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":507,"value":"# 等额本息总期数利息乘数曲线","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":334,"value":"Plot.plot({\n width,\n marks: [\n Plot.line(curveSet, {x: \"总期数\", y: \"利息乘数\", tip: true})\n ]\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":350,"value":"function calculateEqualInstallmentPayment(loanAmount, interestRate, loanTerm) {\n let monthlyInterestRate = interestRate / 12 / 100; // 将年利率转换为月利率\n let monthlyPayment = (loanAmount * monthlyInterestRate * Math.pow(1 + monthlyInterestRate, loanTerm)) / (Math.pow(1 + monthlyInterestRate, loanTerm) - 1); // 每期还款金额\n\n let payments = []; // 存储每期还款情况的数组\n\n for (let i = 1; i <= loanTerm; i++) {\n let interestPayment = loanAmount * monthlyInterestRate; // 每期利息还款额\n let principalPayment = monthlyPayment - interestPayment; // 每期本金还款额\n let totalPayment = monthlyPayment; // 每期总还款额\n\n payments.push({\n 'term': i,\n 'principal': principalPayment,\n 'interest': interestPayment,\n 'total': totalPayment,\n 'loanAmountReserve': loanAmount,\n });\n\n loanAmount -= principalPayment; // 更新剩余未还本金\n }\n\n return payments;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":352,"value":"function calculateEqualPrincipalPayment(loanAmount, interestRate, loanTerm) {\n let monthlyInterestRate = interestRate / 12 / 100; // 将年利率转换为月利率\n let principalPayment = loanAmount / loanTerm; // 每期本金还款额\n\n let payments = []; // 存储每期还款情况的数组\n\n let remainingPrincipal = loanAmount; // 剩余未还本金\n\n for (let i = 1; i <= loanTerm; i++) {\n let interestPayment = remainingPrincipal * monthlyInterestRate; // 每期利息还款额\n let totalPayment = principalPayment + interestPayment; // 每期总还款额\n\n payments.push({\n 'term': i,\n 'principal': principalPayment,\n 'interest': interestPayment,\n 'total': totalPayment,\n 'loanAmountReserve': remainingPrincipal,\n });\n\n remainingPrincipal -= principalPayment; // 更新剩余未还本金\n }\n\n return payments;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":354,"value":"equalInstallmentPayments = calculateEqualInstallmentPayment(828224.5, 3.2, 260)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":648,"value":"## 等额本息总利息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":619,"value":"equalInstallmentPayments.map((item) => item.interest).reduce((t, c) => t + c, 0)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":358,"value":"equalPrincipalPayments = calculateEqualPrincipalPayment(828224.5, 3.3, 260)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":644,"value":"## 等额本金总利息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":650,"value":"equalPrincipalPayments.map((item) => item.interest).reduce((t, c) => t + c, 0)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":536,"value":"# 等额本金/等额本息每期剩余本金比较\n\n- 等额本金\n- 等额本息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":365,"value":"Plot.plot({\n y: {\n label: \"元\",\n grid: true\n },\n x: {\n label: \"期\",\n grid: true\n },\n width,\n marks: [\n Plot.line(equalPrincipalPayments, {\n y: \"loanAmountReserve\",\n x: \"term\",\n stroke: \"red\",\n tip: true\n }),\n Plot.line(equalInstallmentPayments, {\n y: \"loanAmountReserve\",\n x: \"term\",\n stroke: \"blue\",\n tip: true\n })\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":539,"value":"# 等额本金每期还款金额情况\n\n- 合计\n- 本金\n- 利息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":398,"value":"Plot.plot({\n y: {\n label: \"元\",\n grid: true\n },\n x: {\n label: \"期\",\n grid: true\n },\n width,\n marks: [\n Plot.line(equalPrincipalPayments, {\n y: \"principal\",\n x: \"term\",\n stroke: \"red\",\n tip: true,\n ariaDescription: \"本金\",\n ariaHidden: false,\n }),\n Plot.line(equalPrincipalPayments, {\n y: \"interest\",\n x: \"term\",\n stroke: \"yellow\",\n tip: true,\n ariaDescription: \"利息\"\n }),\n Plot.line(equalPrincipalPayments, {\n y: \"total\",\n x: \"term\",\n stroke: \"blue\",\n tip: true,\n ariaDescription: \"合计\"\n }),\n Plot.crosshair(equalPrincipalPayments, {x: \"term\", y: \"total\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":541,"value":"# 等额本息每期还款金额情况\n\n- 合计\n- 本金\n- 利息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":407,"value":"Plot.plot({\n y: {\n label: \"元\",\n grid: true\n },\n x: {\n label: \"期\",\n grid: true\n },\n width,\n marks: [\n Plot.line(equalInstallmentPayments, {\n y: \"principal\",\n x: \"term\",\n stroke: \"red\",\n tip: true,\n ariaDescription: \"本金\",\n ariaHidden: false,\n }),\n Plot.line(equalInstallmentPayments, {\n y: \"interest\",\n x: \"term\",\n stroke: \"yellow\",\n tip: true,\n ariaDescription: \"利息\"\n }),\n Plot.line(equalInstallmentPayments, {\n y: \"total\",\n x: \"term\",\n stroke: \"blue\",\n tip: true,\n ariaDescription: \"合计\"\n }),\n Plot.crosshair(equalInstallmentPayments, {x: \"term\", y: \"total\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":543,"value":"# 等额本金/等额本息每期还款金额差异\n\n- 等额本金\n- 等额本息","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":492,"value":"Plot.plot({\n width,\n x: \"期\",\n y: \"元\",\n positiveFill: \"red\",\n negativeFill: \"blue\",\n marks: [\n Plot.areaY(equalInstallmentPayments, {\n x: 'term',\n y: 'total',\n fill: \"red\",\n tip: true,\n }),\n Plot.areaY(equalPrincipalPayments, {\n x: 'term',\n y: 'total',\n fill: \"blue\",\n fillOpacity: 0.5,\n tip: true,\n }),\n Plot.ruleY([0]),\n Plot.crosshair(equalPrincipalPayments, {x: \"term\", y: \"total\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W49","stdlib":"1"}} 24:null