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sampleFrom,
getRandomNumberGenerator,
range,
} from "../clientUtils/Util"
import { countries } from "../clientUtils/countries"
import { TimeRange } from "./CoreTableConstants"
import { ColumnTypeNames } from "./CoreColumnDef"
import { OwidVariableDisplayConfigInterface } from "../clientUtils/OwidVariableDisplayConfigInterface"
import { OwidTable } from "./OwidTable"
import { OwidColumnDef, OwidTableSlugs } from "./OwidTableConstants"
import { ColumnSlug } from "../clientUtils/owidTypes"
interface SynthOptions {
entityCount: number
entityNames: string[]
timeRange: TimeRange
columnDefs: OwidColumnDef[]
}
const SynthesizeOwidTable = (
options?: Partial<SynthOptions>,
seed = Date.now()
): OwidTable => {
const finalOptions: SynthOptions = {
entityNames: [],
entityCount: 2,
timeRange: [1950, 2020],
columnDefs: [],
...options,
}
const { entityCount, columnDefs, timeRange, entityNames } = finalOptions
const colSlugs = (
[
OwidTableSlugs.entityName,
OwidTableSlugs.entityCode,
OwidTableSlugs.entityId,
OwidTableSlugs.year,
] as ColumnSlug[]
).concat(columnDefs.map((col) => col.slug!))
const entities = entityNames.length
? entityNames.map((name) => {
return {
name,
code: name.substr(0, 3).toUpperCase(),
}
})
: sampleFrom(countries, entityCount, seed)
const rows = entities.map((entity, index) => {
let values = columnDefs.map((def) => def.generator!())
return range(timeRange[0], timeRange[1])
.map((year) => {
values = columnDefs.map((def, index) =>
Math.round(
values[index] * (1 + def.growthRateGenerator!() / 100)
)
)
return [entity.name, entity.code, index, year, ...values].join(
","
)
})
.join("\n")
})
return new OwidTable(
`${colSlugs.join(",")}\n${rows.join("\n")}`,
columnDefs
)
}
export const SynthesizeNonCountryTable = (
options?: Partial<SynthOptions>,
seed = Date.now()
): OwidTable =>
SynthesizeOwidTable(
{
entityNames: ["Fire", "Earthquake", "Tornado"],
columnDefs: [
{
slug: SampleColumnSlugs.Disasters,
type: ColumnTypeNames.Integer,
generator: getRandomNumberGenerator(0, 20, seed),
growthRateGenerator: getRandomNumberGenerator(
-50,
50,
seed
),
},
],
...options,
},
seed
)
export enum SampleColumnSlugs {
Population = "Population",
GDP = "GDP",
LifeExpectancy = "LifeExpectancy",
Fruit = "Fruit",
Vegetables = "Vegetables",
Disasters = "Disasters",
}
export const SynthesizeGDPTable = (
options?: Partial<SynthOptions>,
seed = Date.now(),
display?: OwidVariableDisplayConfigInterface
): OwidTable =>
SynthesizeOwidTable(
{
columnDefs: [
{
...SynthSource(SampleColumnSlugs.Population),
slug: SampleColumnSlugs.Population,
type: ColumnTypeNames.Population,
generator: getRandomNumberGenerator(1e7, 1e9, seed),
growthRateGenerator: getRandomNumberGenerator(-5, 5, seed),
display,
},
{
...SynthSource(SampleColumnSlugs.GDP),
slug: SampleColumnSlugs.GDP,
type: ColumnTypeNames.Currency,
generator: getRandomNumberGenerator(1e9, 1e12, seed),
growthRateGenerator: getRandomNumberGenerator(
-15,
15,
seed
),
display,
},
{
...SynthSource(SampleColumnSlugs.LifeExpectancy),
slug: SampleColumnSlugs.LifeExpectancy,
type: ColumnTypeNames.Age,
generator: getRandomNumberGenerator(60, 90, seed),
growthRateGenerator: getRandomNumberGenerator(-2, 2, seed),
display,
},
],
...options,
},
seed
)
const SynthSource = (
name: string
): {
sourceName: string
sourceLink: string
dataPublishedBy: string
dataPublisherSource: string
retrievedDate: string
additionalInfo: string
} => {
return {
// id: name.charCodeAt(0) + name.charCodeAt(1) + name.charCodeAt(2),
sourceName: `${name} Almanac`,
sourceLink: "http://foo.example",
dataPublishedBy: `${name} Synthetic Data Team`,
dataPublisherSource: `${name} Institute`,
retrievedDate: "1/1/2000",
additionalInfo: `Downloaded via FTP`,
}
}
export const SynthesizeFruitTable = (
options?: Partial<SynthOptions>,
seed = Date.now()
): OwidTable =>
SynthesizeOwidTable(
{
columnDefs: [
{
...SynthSource(SampleColumnSlugs.Fruit),
slug: SampleColumnSlugs.Fruit,
type: ColumnTypeNames.Numeric,
generator: getRandomNumberGenerator(500, 1000, seed),
growthRateGenerator: getRandomNumberGenerator(
-10,
10,
seed
),
},
{
...SynthSource(SampleColumnSlugs.Vegetables),
slug: SampleColumnSlugs.Vegetables,
type: ColumnTypeNames.Numeric,
generator: getRandomNumberGenerator(400, 1000, seed),
growthRateGenerator: getRandomNumberGenerator(
-10,
12,
seed
),
},
],
...options,
},
seed
)
export const SynthesizeFruitTableWithNonPositives = (
options?: Partial<SynthOptions>,
howManyNonPositives = 20,
seed = Date.now()
): OwidTable => {
const rand = getRandomNumberGenerator(-1000, 0)
return SynthesizeFruitTable(options, seed).replaceRandomCells(
howManyNonPositives,
[SampleColumnSlugs.Fruit, SampleColumnSlugs.Vegetables],
undefined,
() => rand()
)
}
const stringValues = ["NA", "inf", "..", "/", "-", "#VALUE!"]
export const SynthesizeFruitTableWithStringValues = (
options?: Partial<SynthOptions>,
howMany = 20,
seed = Date.now()
): OwidTable => {
return SynthesizeFruitTable(options, seed).replaceRandomCells(
howMany,
[SampleColumnSlugs.Fruit, SampleColumnSlugs.Vegetables],
undefined,
() => sampleFrom(stringValues, 1, Date.now())[0]
)
}
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