reveal-feature-json-schema-forms.md

layout	reveal
title	Reveal Pro: JSON Schema and Vega(-Lite) Forms
permalink	/reveal/feature/json-schema-forms

Reveal Pro's Forms allow you to convert data structure specifications to UI input components for creating these data structures. This is a generic and multi-purpose tool that supports Clojure spec and JSON Schema out of the box and can be extended to other data specification libraries.

Since Vega(-Lite) provides JSON Schemas that are supported by Forms, it is very useful to explore vega visualizations using Form views:

Vega forms are available with:

• view:vega-form action on vega datasets — collections of maps or collections of numbers (as well as on refs that point to vega datasets);
• vlaaad.reveal/vega-form-view view that shows both vega editor form and vega visualization, e.g.:

  (require '[vlaaad.reveal :as r])
  
  #reveal/inspect {:fx/type r/vega-form-view
                   :spec {:data {:name "source"}
                          :mark {:type "line"}
                          :encoding {:x {:field "data" :type "quantitative"}
                                     :y {:field "data" :type "quantitative"}}}
                   :data {"source" (range 1000)}}