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n <= N; n++) {\n const angle = 2 * Math.PI * (n / MONTH + (n * n) / DATE + (n * n * n) / YEAR);\n sum.real += Math.cos(angle);\n sum.imag += Math.sin(angle);\n data.push({ real: sum.real, imag: sum.imag });\n }\n\n return { date, data };\n}\n\n// Generate data for the past 10 days\nfunction generatePast10DaysData() {\n const today = new Date();\n return Array.from({ length: 10 }, (_, i) => {\n const date = new Date(today);\n date.setDate(date.getDate() - i);\n return expSumDataForDate(date);\n });\n}\n\n// Render animated exponential sum plot\nexport async function expSumPlot(req) {\n const d3 = await import(\"npm:d3@7\");\n\n const allData = generatePast10DaysData();\n\n const margin = { top: 40, right: 20, bottom: 40, left: 20 };\n const width = 500 - margin.left - margin.right;\n const height = 500 - margin.top - margin.bottom;\n\n // Find global min and max for consistent scaling\n const allPoints = allData.flatMap(d => d.data);\n const xExtent = d3.extent(allPoints, d => d.real);\n const yExtent = d3.extent(allPoints, d => d.imag);\n\n const xScale = d3.scaleLinear()\n .domain([Math.min(xExtent[0], -1), Math.max(xExtent[1], 1)])\n .range([0, width]);\n\n const yScale = d3.scaleLinear()\n .domain([Math.min(yExtent[0], -1), Math.max(yExtent[1], 1)])\n .range([height, 0]);\n\n const line = d3.line()\n .x(d => xScale(d.real))\n .y(d => yScale(d.imag));\n\n // Create SVG string with animation\n let svgString = ``;\n\n return svgServer(req, svgString);\n}\n\nexport default expSumPlot;","deleted","label",[98],"permalink","https://www.val.town/x/charmaine/expSumPlot/code/main.tsx","extension","actionData","errors"]