Global

Methods

(async) WKriging(psSrc, psTar, optopt) → {Promise}

Description:

  • Kriging內外插值，支援2D與3D

Source:
Example
async function test2d1() {

    let psSrc = [
        {
            x: -0.1, y: -0.1, z: 0
        },
        {
            x: 1, y: 0, z: 0
        },
        {
            x: 1, y: 1, z: 10
        },
        {
            x: 0, y: 1, z: 0
        },
    ]
    let psTar = [
        { x: 0.1, y: 0.95 },
    ]
    let opt = {
        variogram_model: 'gaussian',
        nlags: 9,
    }

    let r = await WKriging(psSrc, psTar, opt)
    console.log('test2d1', r)
    // => test2d [ { x: 0.1, y: 0.95, z: 1.8997805977145759 } ]

}
test2d1()
    .catch((err) => {
        console.log('catch', err)
    })

async function test2d2() {

    let psSrc = [{ x: 243, y: 206, z: 95 }, { x: 233, y: 225, z: 146 }, { x: 21, y: 325, z: 22 }, { x: 953, y: 28, z: 223 }, { x: 1092, y: 290, z: 39 }, { x: 744, y: 200, z: 191 }, { x: 174, y: 3, z: 22 }, { x: 537, y: 368, z: 249 }, { x: 1151, y: 371, z: 86 }, { x: 814, y: 252, z: 125 }]

    let psTar = [{
        x: 243,
        y: 205,
    }]

    let opt = {
        variogram_model: 'exponential',
        nlags: 9,
    }

    let r = await WKriging(psSrc, psTar, opt)
    console.log('test2d2', r)
    // => test2d [ { x: 243, y: 205, z: 94.89492366904084 } ]

}
test2d2()
    .catch((err) => {
        console.log('catch', err)
    })

async function test3d1() {

    let psSrc = [
        {
            x: -0.1, y: -0.1, z: -0.1, v: 0
        },
        {
            x: 1, y: 0, z: 0, v: 0
        },
        {
            x: 1, y: 1, z: 0, v: 0
        },
        {
            x: 0, y: 0, z: 1, v: 0
        },
        {
            x: 1, y: 0, z: 1, v: 0
        },
        {
            x: 1, y: 1, z: 1, v: 10
        },
    ]
    let psTar = [
        {
            x: 0.1, y: 0.1, z: 0.95
        },
    ]
    let opt = {
        variogram_model: 'gaussian',
        nlags: 9,
    }

    let r = await WKriging(psSrc, psTar, opt)
    console.log('test3d1', r)
    // => test3d [ { x: 0.1, y: 0.1, z: 0.95, v: 1.666666666666666 } ]

}
test3d1()
    .catch((err) => {
        console.log('catch', err)
    })
Parameters:
Name Type Attributes Default Description
psSrc Array

輸入二維座標加觀測數據點陣列，為[{x:x1,y:y1,z:z1},{x:x2,y:y2,z:z2},...]點物件之陣列，亦可支援三維座標加觀測數據點陣列，為[{x:x1,y:y1,z:z1,v:v1},{x:x2,y:y2,z:z2,v:v2},...]點物件之陣列
psTar Array | Object

輸入二維座標點陣列或點物件，為[{x:x1,y:y1},{x:x2,y:y2},...]點物件之陣列，或{x:x1,y:y1}點物件，亦可支援三維座標點陣列或點物件，為[{x:x1,y:y1,z:z1},{x:x2,y:y2,z:z2},...]點物件之陣列，或{x:x1,y:y1,z:z1}點物件
opt Object <optional>
 {}

輸入設定物件，預設{}

Properties
Name Type Attributes Default Description
keyX String <optional>
 'x'

輸入點物件之x欄位字串，為座標，預設'x'
keyY String <optional>
 'y'

輸入點物件之y欄位字串，為座標，預設'y'
keyZ String <optional>
 'z'

輸入點物件之z欄位字串，若為二維則為觀測值，若為三維則為座標，預設'z'
keyV String <optional>
 'v'

輸入點物件之v欄位字串，為觀測值，預設'v'
variogram_model String <optional>
 'exponential'

輸入變異圖模式字串，可選'linear'、'power'、'gaussian'、'spherical'、'exponential'、'hole-effect'，其定義詳見pykrige，預設'exponential'
nlags Integer <optional>
 9

輸入變異圖統計直條圖數量整數，其定義詳見pykrige，預設9
Returns:

回傳Promise，resolve回傳成功訊息，reject回傳錯誤訊息

Type
Promise