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# Change Log
All notable changes to this project will be documented in this file. This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/).
## [Unreleased]
### Changed
- Add a new arity to `make-widget-async` to provide a different widget shape.
## [0.1.1] - 2018-06-19
### Changed
- Documentation on how to make the widgets.
### Removed
- `make-widget-sync` - we're all async, all the time.
### Fixed
- Fixed widget maker to keep working when daylight savings switches over.
## 0.1.0 - 2018-06-19
### Added
- Files from the new template.
- Widget maker public API - `make-widget-sync`.
[Unreleased]: https://github.com/your-name/adl-data/compare/0.1.1...HEAD
[0.1.1]: https://github.com/your-name/adl-data/compare/0.1.0...0.1.1

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`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
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# adl-data
A Clojure library designed to import data (mainly geographical and electoral data) into YouYesYet. As such, not directly relevant to anyone but me at this stage, but I will ultimately separate out the more generally useful bits of the import scripts and make them available in a library.
## Usage
At this stage, who knows?
## License
Copyright © 2018 Simon Brooke
Distributed under the Gnu General Public License either version 2.0 or (at
your option) any later version.

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# Introduction to adl-data
TODO: write [great documentation](http://jacobian.org/writing/what-to-write/)

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(defproject yyy-data "0.1.0-SNAPSHOT"
:description "FIXME: write description"
:url "http://example.com/FIXME"
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:dependencies [[adl-support "0.1.0-SNAPSHOT"]
[generateme/fastmath "1.0.1"]
[org.clojure/clojure "1.8.0"]
[org.clojure/data.json "0.2.6"]
[net.mikera/core.matrix "0.62.0"]])

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(ns yyy-data.core
(:require [adl-support.utils :refer :all]
[fastmath.core :refer [radians degrees sin cos sqrt atan2]]
[clojure.core.matrix :as mx]
[clojure.data.json :as json]
[clojure.string :as s]))
(declare Cartesian Point)
;;; Coordinate system conversion cribbed from https://www.movable-type.co.uk/scripts/latlong-os-gridref.html
(def ellipsoids
"Ellipsoid parameters; major axis (a), minor axis (b), and flattening (f) for each ellipsoid."
{
:WGS84 { :a 6378137 :b 6356752.314245 :f (/ 1 298.257223563) }
:Airy1830 { :a 6377563.396 :b 6356256.909 :f (/ 1 299.3249646) }
:AiryModified { :a 6377340.189 :b 6356034.448 :f (/ 1 299.3249646) }
:Bessel1841 { :a 6377397.155 :b 6356078.962818 :f (/ 1 299.1528128) }
:Clarke1866 { :a 6378206.4 :b 6356583.8 :f (/ 1 294.978698214) }
:Clarke1880IGN { :a 6378249.2 :b 6356515.0 :f (/ 1 293.466021294) }
:GRS80 { :a 6378137 :b 6356752.314140 :f (/ 1 298.257222101) }
:Intl1924 { :a 6378388 :b 6356911.946 :f (/ 1 297) } ;; aka Hayford
:WGS72 { :a 6378135 :b 6356750.5 :f (/ 1 298.26) }
})
(def datums
"Datums; with associated ellipsoid, and Helmert transform parameters to convert from WGS 84 into
given datum.
Note that precision of various datums will vary, and WGS-84 (original) is not defined to be
accurate to better than ±1 metre. No transformation should be assumed to be accurate to better
than a meter; for many datums somewhat less.
Yes, I know that the plural of datums is data..."
{
;; transforms: t in metres, s in ppm, r in arcseconds tx ty tz s rx ry rz
:ED50 { :key :ED50 :ellipsoid (ellipsoids :Intl1924) :transform { :tx 89.5, :ty 93.8 :tz 123.1 :s -1.2 :rx 0.0 :ry 0.0 :rz 0.156 }}
:Irl1975 { :key :Irl1975 :ellipsoid (ellipsoids :AiryModified) :transform { :tx -482.530 :ty 130.596 :tz -564.557 :s -8.150 :rx -1.042 :ry -0.214 :rz -0.631 }}
:NAD27 { :key :NAD27 :ellipsoid (ellipsoids :Clarke1866) :transform { :tx 8 :ty -160 :tz -176 :s 0 :rx 0 :ry 0 :rz 0 }}
:NAD83 { :key :NAD83 :ellipsoid (ellipsoids :GRS80) :transform { :tx 1.004 :ty -1.910 :tz -0.515 :s -0.0015 :rx 0.0267 :ry 0.00034:rz 0.011 }}
:NTF { :key :NTF :ellipsoid (ellipsoids :Clarke1880IGN) :transform { :tx 168 :ty 60 :tz -320 :s 0 :rx 0 :ry 0 :rz 0 }}
:OSGB36 { :key :OSGB36 :ellipsoid (ellipsoids :Airy1830) :transform { :tx -446.448 :ty 125.157 :tz -542.060 :s 20.4894 :rx -0.1502 :ry -0.2470 :rz -0.8421 }}
:Potsdam { :key :Potsdam :ellipsoid (ellipsoids :Bessel1841) :transform { :tx -582 :ty -105 :tz -414 :s -8.3 :rx 1.04 :ry 0.35 :rz -3.08 }}
:TokyoJapan { :key :TokyoJapan :ellipsoid (ellipsoids :Bessel1841) :transform { :tx 148 :ty -507 :tz -685 :s 0 :rx 0 :ry 0 :rz 0 }}
:WGS72 { :key :WGS72 :ellipsoid (ellipsoids :WGS72) :transform { :tx 0 :ty 0 :tz -4.5 :s -0.22 :rx 0 :ry 0 :rz 0.554 }}
:WGS84 { :key :WGS84 :ellipsoid (ellipsoids :WGS84) :transform { :tx 0.0 :ty 0.0 :tz 0.0 :s 0.0 :rx 0.0 :ry 0.0 :rz 0.0 }}
})
(defprotocol Location
"A location on the surface of the earth"
(datum [l])
(datum-key [l])
(ellipsoid [l])
(grid-x [l])
(grid-y [l])
(latitude [l])
(longitude [l])
(to-cartesian [l])
(to-point [l])
(to-point [l d]))
(defrecord Cartesian
[x y z]
Location
;; datum is a bit meaningless for a Cartesian; get the default.
(datum [x] (datums :WGS84))
(datum-key [x] :WGS84)
(ellipsoid [x] (:ellipsoid (datum x)))
;; I already am cartesian; return myself
(to-cartesian [x] x)
(to-point [this datum] (let
[a (:a (:ellipsoid datum))
b (:b (:ellipsoid datum))
f (:f (:ellipsoid datum))
e2 (- (* 2 f) (* f f)) ;; first eccentricity squared
ε2 (/ e2 (- 1 e2)) ;; second eccentricity squared
p (sqrt (+ (* (:x this) (:x this)) (* (:y this) (:y this))))
;; distance from minor radius
R (sqrt (+ (* p p) (* (:z this) (:z this))))
;; polar radius
tanβ (* (/ (* b (:z this))(* a p)) (/ (* b (+ 1 ε2)) R))
sinβ (/ tanβ (sqrt (+ 1 (* tanβ tanβ))))
cosβ (/ sinβ tanβ)
φ (if
(Double/isNaN cosβ) 0
(atan2 (+ z (* ε2 b sinβ sinβ sinβ))
(- p (* e2 a cosβ cosβ cosβ))))
λ (atan2 (:y this) (:x this))
v (/ a (sqrt (- 1 (* e2 (sin φ) (sin φ)))))]
(Point. (degrees φ) (degrees λ) datum)))
)
(defn inverse-transform [t]
"Return a transform which is the inverse of `t`. More generally,
expects a map `t` whose values are numbers, and returns a map which has
for each key in `t` a number which is the inverse of the value of the
same key in `t`."
(reduce
merge
{}
(map
#(if (number? (t %)) (hash-map % (- 0 (t %))))
(keys t))))
;; (inverse-transform { :tx 89.5, :ty 93.8 :tz 123.1 :s -1.2 :rx 0.0 :ry 0.0 :rz 0.156 })
(defrecord Point
"A point with an `x` co-ordinate, a `y` co-ordinate, and a datum `d`. We're
agnostic as to whether `d` is passed as a keyword or a map, but it must be
taken from `datums`, q.v."
[x y d]
Location
(datum [x]
(cond
(keyword? (:d x))
(datums (:d x))
(map? (:d x))
(:d x)))
(datum-key [x]
(cond
(keyword? (:d x))
(:d x)
(map? (:d x))
(:key (:d x))))
(ellipsoid [x]
(:ellipsoid (datum [x])))
(to-cartesian [x]
(let [φ (radians (latitude x))
λ (radians (longitude x))
h 0
a (:a (:ellipsoid (:datum x)))
f (:f (:ellipsoid (:datum x)))
sinφ (sin φ)
cosφ (cos φ)
sinλ (sin λ)
cosλ (cos λ)
e2 (- (* 2 f) (* f f))
v (/ a (sqrt (- 1 (* e2 sinφ sinφ))))]
(Cartesian.
(* (+ v h) cosφ cosλ)
(* (+ v h) cosφ sinλ)
(* v (+ h (- 1 e2)) sinφ))))
(to-point [x] x)
(to-point [x new-datum]
(let [od (datum x)
nd (if (keyword? new-datum) (datums new-datum) new-datum)
c (to-cartesian x)]
(cond
(= od nd) x
(= (:key od) :WGS84) (to-point
(apply-transform c (:transform nd)))
(= (:key nd) :WGS84) (to-point
(apply-transform
c
(inverse-transformation (:datum x))))
true
(to-datum (to-datum x :WGS84) nd)))))
(latitude [x]
(:y (to-datum
;; (defn os-grid-x-to-lat-long
;; ([x y]
;; (os-grid-x-to-lat-long {:x x :y y})
;; ([point]
;; (let [datum
;; )
;; (defn os-grid-y-to-latitude
;; [y]
;; )
(defn
(defn post-code-data-to-addresses
[filename]
(map
(fn [a]
(s/join
(list
"insert into addresses (address:ellipsoid postcode}} latitude, longitude) values ('"
(:address %) "', '" (:postcode %)
"', " 0 "," 0 ");"))
)
(filter
#(= (:classification_code_description %) "Dwelling")
(:results (json/read-str (slurp filename) :key-fn #(keyword (.toLowerCase %)))))))

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(ns yyy-data.core-test
(:require [clojure.test :refer :all]
[adl-data.core :refer :all]))
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 1))))