本文整理匯總了TypeScript中@turf/turf.simplify函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript simplify函數的具體用法？TypeScript simplify怎麽用？TypeScript simplify使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了simplify函數的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: Number
feature.properties = {
building: 'yes',
source: 'City of Ottawa',
}
const uniqueOuter: any = {}
const uniqueInner: any = {}
feature.geometry.coordinates[0].map(coord => uniqueOuter[coord.map(x => Number(x.toFixed(5))).join(',')] = true)
if (feature.geometry.coordinates[1]) { feature.geometry.coordinates[1].map(coord => uniqueInner[coord.map(x => Number(x.toFixed(5))).join(',')] = true) }
if (count % 1000 === 0) { console.log('processed', count, Object.keys(uniqueOuter).length, Object.keys(uniqueInner).length) }
// Remove Inner Polygon
if (Object.keys(uniqueInner).length === 2 || Object.keys(uniqueInner).length === 1) {
console.log('remove inner polygon', JSON.stringify(feature, null))
fs.writeFileSync('last-issue.geojson', JSON.stringify(feature, null, 2))
feature.geometry.coordinates = feature.geometry.coordinates.slice(0, 1)
}
// Don't simplify two vertices
if (Object.keys(uniqueOuter).length > 2) {
feature = turf.simplify(feature, 0.000001, true)
collection.push(feature)
}
count ++
}
console.log('Total:', count, collection.length)
console.log('writting')
writer('ottawa-buildings-clean.geojson', turf.featureCollection(collection))
示例2:
turf.convex(points)
// -- Test difference --
turf.difference(polygon1, polygon2)
// -- Test intersect --
turf.intersect(polygon1, polygon2)
turf.intersect(point1, polygon1)
turf.intersect(point1, point1)
turf.intersect(polygon1, point1)
turf.intersect(polygon1, lineString1)
turf.intersect(lineString1, point1)
// -- Test simplify --
turf.simplify(polygon1, 0.01, false)
// -- Test union --
turf.union(polygon1, polygon2)
///////////////////////////////////////////
// Tests Misc
///////////////////////////////////////////
// -- Test combine --
turf.combine(points)
// -- Test explode --
turf.explode(polygon1)
// -- Test flip --示例3: require
import * as concaveman from 'concaveman'
import * as helpers from 'geojson-helpers'
import * as turf from '@turf/turf'
const data = './halifax-buildings.json'
const geojson: GeoJSON.FeatureCollection<any> = require(data)
const points: Array<Array<number>> = []
geojson.features.map(feature => {
turf.explode(feature).features.map(point => {
points.push(point.geometry.coordinates)
})
})
const extent = turf.polygon([concaveman(points)])
const buffer = turf.buffer(extent, 500, 'meters')
const simple: any = turf.simplify(buffer, 0.001, false)
helpers.writeFileSync('./extent.geojson', turf.featureCollection([extent]))
helpers.writeFileSync('./buffer.geojson', turf.featureCollection([buffer]))
helpers.writeFileSync('./simple.geojson', turf.featureCollection([simple]))