as_d3_data: Transform the 'de' object to JSON data for D3 visualization.

In dcnorris/DTAT: Dose Titration Algorithm Tuning: a framework for dose individualization

Description

The returned object is a JSON representation of a JavaScript object having components 'mtd', 'trial' and 'ds' – the last of which stands for 'dose-survival'.

Usage

## S3 method for class 'de'
as_d3_data(x, ...)

Arguments

x	The 'de' object to be transformed
...	Unused; included to match signature of generic method

Details

The (unhelpful) default behavior of function r2d3 is to effect this transformation so as to reduce the size of transmitted data, then restore the original form upon receipt using JavaScript method HTMLWidgets.dataframeToD3(). See https://rstudio.github.io/r2d3/articles/data_conversion.html.

Value

The returned value is a JSON string corresponding to a list of data frames:

mtd	Data frame with columns c('id','mtd')
trial	Data frame with 'id', 'period', 'dose', 'dlt'.)
ds	Data frame with columns 'period','surv','lower','upper','dose'.

Author(s)

David C. Norris

Examples

library(DTAT)
de <- de.sim(testing=TRUE)
data <- as_d3_data(de)
## Read 'data' back into a list and check a few things
check <- jsonlite::fromJSON(data)
stopifnot(max(abs(attr(de,'mtd') - check$mtd)) < 1e-4)
stopifnot(max(abs(attr(de,'doses') - check$doses)) < 1e-4)
stopifnot(max(abs(attr(de,'mtd_quantiles') - check$mtd_quantiles)) < 1e-4)
stopifnot(all(de[[length(de)]] - check$trial == 0))

dcnorris/DTAT documentation built on May 7, 2019, 10:45 p.m.