Lat/long distance from a reference point

Lat/long distance from a reference point | BigML.com

FREE

Lat/Long Distance from a reference point

Details:

Created	Thu, 21 Sep 2023 18:48:22 +0000
Published	Thu, 21 Sep 2023 19:00:13 +0000

Description:

Extends a dataset with the distance in meters between lat/long fields and a reference point.

Tags:

URL:

https://bigml.com/user/petersen/gallery/script/650c8ff67411b45f016555c3

Script FREE

Source code

; Computes the distance between lat/long coordinates and a reference point
; All lat/long coordinates must be in signed degrees (no N/W/S/E etc)
(define (latlong-ref-dist dataset-in lat-field long-field lat-ref long-ref) 
  (create-and-wait-dataset {
    "origin_dataset" dataset-in 
    "new_fields" [ 
       {
        "field" ( flatline "( let ("
          "R 6371000 "
          "latA (to-radians {lat-ref}) "
          "latB (to-radians ( field {{lat-field}} ) ) "
          "latD ( - latB latA ) "
          "longD ( to-radians ( - ( field {{long-field}} ) {long-ref} ) ) "
          "a ( + ( square ( sin ( / latD 2 ) ) ) ( * (cos latA) (cos latB) (square ( sin ( / longD 2))) ) ) "
          "c ( * 2 ( asin ( min (list 1 (sqrt a)) ) ) ) ) " 
          "( * R c ) )" )
        "name" "Distance (m)"
       }
      ]
    }
  )
)

(define dataset-out (latlong-ref-dist dataset-in lat-field long-field lat-ref long-ref))

Description

Inputs

Outputs

License: GNU V3.0
Script FREE

Lat/long distance from a reference point | BigML.com

Sending Request...

COMPANY

PRODUCT

BUSINESS

TRAINING

GALLERY

License

Embed this Script in your web site

COMPANY

PRODUCT

BUSINESS

TRAINING

GALLERY