flux_gen.go

// DO NOT EDIT: This file is autogenerated via the builtin command.

package statsmodels

import (
	ast "github.com/influxdata/flux/ast"
	runtime "github.com/influxdata/flux/runtime"
)

func init() {
	runtime.RegisterPackage(pkgAST)
}

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				Source: "package statsmodels\n\n\nimport \"math\"\nimport \"generate\"\n\n// performs linear regression, calculates y_hat, and residuals squared (rse) \nlinearRegression = (tables=<-) => {\n    renameAndSum = tables\n        |> rename(columns: {_value: \"y\"})\n        |> map(fn: (r) => ({r with x: 1.0}))\n        |> cumulativeSum(columns: [\"x\"])\n    t = renameAndSum\n        |> reduce(\n            fn: (r, accumulator) => ({\n                sx: r.x + accumulator.sx,\n                sy: r.y + accumulator.sy,\n                N: accumulator.N + 1.0,\n                sxy: r.x * r.y + accumulator.sxy,\n                sxx: r.x * r.x + accumulator.sxx,\n            }),\n            identity: {\n                sxy: 0.0,\n                sx: 0.0,\n                sy: 0.0,\n                sxx: 0.0,\n                N: 0.0,\n            },\n        )\n        |> tableFind(fn: (key) => true)\n        |> getRecord(idx: 0)\n    xbar = t.sx / t.N\n    ybar = t.sy / t.N\n    slope = (t.sxy - xbar * ybar * t.N) / (t.sxx - t.N * xbar * xbar)\n    intercept = ybar - slope * xbar\n    y_hat = (r) => ({r with\n        y_hat: slope * r.x + intercept,\n        slope: slope,\n        sx: t.sx,\n        sxy: t.sxy,\n        sxx: t.sxx,\n        N: t.N,\n        sy: t.sy,\n    })\n    rse = (r) => ({r with errors: (r.y - r.y_hat) ^ 2.0})\n    output = renameAndSum\n        |> map(fn: y_hat)\n        |> map(fn: rse)\n\n    return output\n}",
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					Source: "linearRegression = (tables=<-) => {\n    renameAndSum = tables\n        |> rename(columns: {_value: \"y\"})\n        |> map(fn: (r) => ({r with x: 1.0}))\n        |> cumulativeSum(columns: [\"x\"])\n    t = renameAndSum\n        |> reduce(\n            fn: (r, accumulator) => ({\n                sx: r.x + accumulator.sx,\n                sy: r.y + accumulator.sy,\n                N: accumulator.N + 1.0,\n                sxy: r.x * r.y + accumulator.sxy,\n                sxx: r.x * r.x + accumulator.sxx,\n            }),\n            identity: {\n                sxy: 0.0,\n                sx: 0.0,\n                sy: 0.0,\n                sxx: 0.0,\n                N: 0.0,\n            },\n        )\n        |> tableFind(fn: (key) => true)\n        |> getRecord(idx: 0)\n    xbar = t.sx / t.N\n    ybar = t.sy / t.N\n    slope = (t.sxy - xbar * ybar * t.N) / (t.sxx - t.N * xbar * xbar)\n    intercept = ybar - slope * xbar\n    y_hat = (r) => ({r with\n        y_hat: slope * r.x + intercept,\n        slope: slope,\n        sx: t.sx,\n        sxy: t.sxy,\n        sxx: t.sxx,\n        N: t.N,\n        sy: t.sy,\n    })\n    rse = (r) => ({r with errors: (r.y - r.y_hat) ^ 2.0})\n    output = renameAndSum\n        |> map(fn: y_hat)\n        |> map(fn: rse)\n\n    return output\n}",
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