geojson-schema

A geojson schema for validating data using prismatic schema.

GeoJSON is a format for encoding a variety of geographic data structures in JSON. The full full format specification is available here.

Usage

(require '[com.climate.geojson-schema.core :refer [MultiPolygon GeoJSON]]); nil
(require '[schema.core :as s]); nil
(def multipolygon-example
  {:type "MultiPolygon",
   :coordinates [[[[102.0 2.0] [103.0 2.0] [103.0 3.0] [102.0 3.0] [102.0 2.0]]] 
                 [[[100.0 0.0] [101.0 0.0] [101.0 1.0] [100.0 1.0] [100.0 0.0]] 
                  [[100.2 0.2] [100.8 0.2] [100.8 0.8] [100.2 0.8] [100.2 0.2]]]]})
;; => user/multipolygon-example

(s/validate MultiPolygon multipolygon-example)
;; => {:coordinates [[[[102.0 2.0] [103.0 2.0] [103.0 3.0] [102.0 3.0] [102.0 2.0]]] 
;;                   [[[100.0 0.0] [101.0 0.0] [101.0 1.0] [100.0 1.0] [100.0 0.0]] 
;;                    [[100.2 0.2] [100.8 0.2] [100.8 0.8] [100.2 0.8] [100.2 0.2]]]], 
;;     :type "MultiPolygon"}

(def not-really-a-multipolygon
 {:type "Point"
  :coordinates [100.0 0.0]})

(s/validate MultiPolygon not-really-a-multipolygon)
; => ExceptionInfo Value does not match schema: {:type (not (= "MultiPolygon" "Point")), :coordinates [(not (sequential? 100.0)) (not (sequential? 0.0))]}  schema.core/validate (core.clj:165)


;;But it's still valid Geojson
(s/validate GeoJSON not-really-a-multipolygon)
; => {:coordinates [100.0 0.0], :type "Point"}

Caveats

A Coordiante Reference System was supported in the previous 2008 version of the spec, but was removed in the 2016 verison. More info here.

Clojurescript

Executing the tests for Clojurescript lein with-profile test-cljs cljsbuild test

License

Copyright (C) 2014 The Climate Corporation. Distributed under the Apache License, Version 2.0. You may not use this library except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

See the NOTICE file distributed with this work for additional information regarding copyright ownership. Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.