dedav4s

Declarative Data Viz 4 Scala - a thin shim around vega and vega lite. It is aimed at repl, interactive environments and exploratory analysis

Documentation

Video

Elevator pitch

The aim is to make "simple" plotting cases as simple as possible in interactive / scripting scala environments. The idea is to expose vega / lite, in a fairly "raw" manner. There are "plot targets" for the all the "common" environments that I have wanted.

Project status

This library works well enough for my needs. It's been "launched" to see if there is enthusiasm / acceptance of the paradigm. This is a young, simple project with plenty "todo". The barrier to involvement should be rather low, should you have the desire!

Generating the DSL

Clone quicktype, switch to the scala3 branch.

script/quicktype -o vega-lite.scala -t VegaLiteDsl -l scala3 --no-combine-classes -s schema --framework circe --src /Users/simon/Code/quicktype/quicktype/test/inputs/schema/vega-lite.schema --package viz.vega.dsl.vegaLite

script/quicktype -o vega.scala -t Vega -l scala3 --no-combine-classes -s schema --package viz.dsl.vega --framework circe --src /Users/simon/Code/quicktype/quicktype/test/inputs/schema/vega.schema

Currently, there are some niggling problems which remain after generation;

1. Some givens of union types have duplicate shapes, need to comment out the encoder / decoders for some of them
2. introduce a nulltype parameter.