vegawidget 0.3.1

vegawidget 0.2.1

Upgrade to Vega-Lite 3.3.0, Vega 5.4.0, vega-embed 4.2.0. This is supported by all modern browsers and RStudio IDE 1.2.

Update Vega and Vega-Lite libraries to be consistent with Vega-Lite v3.2.1. Add functions to support addDataListener() method offered by vega-view, use vw_shiny_demo("data-set-get") for more information. (#65)

Modify knit_print() to handle non-HTML formats. Instead of using the webshot package, the knit_print() function converts charts to either png, svg (useful for github_document), or pdf (useful for pdf_document) format. (#44, @AliciaSchep)
Improve implementation of the base_url argument in vegawidget(); it works for both local and remote paths. (#63, with @AliciaSchep)
Update templating functions, splitting to two functions: use_vegawidget() and use_vegawidget_interactive(), which let you import and re-export basic-rendering and interactive functions, respectively. If your package keeps its version of a spec in its own S3 class, you can call use_vegawidget() with that class’ name. (#83)
Move shiny from an Imports dependency to a Suggests dependency. (#82)
(Of interest to developers) modify the class-naming for Vega-Lite specs, adding a another level of S3 class that describes the type of chart, e.g. unit, layer, facet, etc. (#77)
Modify contribution guidelines; use master as reference branch for all pull-requests.

changes API and implementation for “image” functions: vw_to_svg(), vw_to_bitmap(), vw_write_svg() , and vw_write_png() - these functions require that you have node installed on your computer, and the rsvg package, to use vw_to_bitmap() and vw_write_png()

adds elementId argument to vegawidget(); had been available as part of ... passed to htmlwidgets::createWidget()
compiles Shiny demonstration apps in inst/shiny-demo, adds function vw_shiny_demo() to access them
adds Shiny setter-functions: vw_shiny_set_signal(), vw_shiny_set_data(), vw_shiny_run(), getter-functions: vw_shiny_get_signal(), vw_shiny_get_event(), and handler helper-functions vw_handler_signal(), vw_handler_event(), vw_handler_add_effect(), vw_handler_compose(), and vw_handler_body_compose()

tries a kinder, gentler method for enforcing sizing by implementing a sizing policy rather than overwriting the enclosing element
deprecates block-functions: vw_create_block(), vw_retrieve_block(); moved to vegablock

adds learnr tutorial, “Overview”
adds datasets: data_seattle_hourly, data_seattle_daily, data_category
changes default-display for vw_examine()
adds function vw_rename_data() to rename named datasets within a vegaspec (#34)

adds function vw_serialize_data() to help format dates and datetimes in data frames (#33)
adds function vega_schema() to create a string describing a schema-URL (#32)
adds function use_vegawidget() to help other packages use these functions (#21)
overhauls the API (#15, with @AliciaSchep)
- changes write_svg() -> vw_write_svg()
- changes write_png() -> vw_write_png()
- changes to_vega() -> vw_to_vega()
- changes to_svg() -> vw_to_svg()
- changes to_png() -> vw_to_png()
- changes png_bin() -> vw_png_bin()
- changes spec_version() -> vw_spec_version()
- changes examine() -> vw_examine()
- changes block_retrieve() -> vw_retrieve_block()
- changes block_create_gistid() -> vw_create_block_gistid()
- changes block_create() -> vw_create_block()
- changes block_config() -> vw_block_config()
- changes autosize() -> vw_autosize()
- changes as_json() -> vw_as_json()
- changes spec_mtcars -> spec_mtcars