vega-tools

Utilities for working with Vega visualization grammar in ClojureScript.

• Validating a Vega specification against Vega JSON-Schema.
• Main entry point of Vega runtime, vg.parse.spec, wrapped into Promesa promises.

See the example project.

Latest version

[metosin/vega-tools "0.2.0"]

Example

Compare and contrast to Vega Runtime documentation:

(ns example
  (:require [vega-tools.core :refer [validate-and-parse]]
            [promesa.core :as p]))

(defn main []
 (let [spec {:width 200 :height 200
             :marks [{:type "symbol"
                      :properties {:enter {:size {:value 1000}
                                           :x {:value 100}
                                           :y {:value 100}
                                           :shape {:value "circle"}
                                           :stroke {:value "red"}}}}]}]
    (-> (validate-and-parse spec)
        (p/catch #(js/alert (str "Unable to parse spec:\n\n" %)))
        (p/then #(-> (% {:el (js/document.getElementById "#chart")})
                     (.update))))))

If you want to use Vega with Reagent, see Using Stateful JS Components on re-frame wiki.

Ideas and TODOs

• Nicer error messages for validation errors
• ClojureScript DSL for the Vega expression language

License

vega-schema.json

Copyright (c) 2013, Trifacta Inc. Copyright (c) 2015, University of Washington Interactive Data Lab All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vega-tools

Copyright © 2016 Metosin Oy.

Distributed under the Eclipse Public License, the same as Clojure.