mjs_add_line: Add a new line to a metricsgraphics.js linechart "geom"

In hrbrmstr/metricsgraphics: Create Interactive Charts with the JavaScript 'MetricsGraphics' Library

Description

This function adds a line to an existing mjs_line "geom". Specify the bare or quoted name of the column to use in y_accessor and it will be added to the plot.

Usage

mjs_add_line(mjs, y_accessor, color = NULL)

Arguments

mjs	metricsgraphics plot object
y_accessor	bare or quoted name of column to add to the existing line plot
color	line color. Use NULL (the default) to use default Metrics Graphics colors or if you plan on using CSS to control the colors.

Value

metricsgraphics object

Note

You must have called mjs_line first before adding additional columns. If you plan on using cusom colors, all lines must have a color value or the result is non-deterministic.

Examples

set.seed(1492)
stocks <- data.frame(
  time = as.Date('2009-01-01') + 0:9,
  X = rnorm(10, 0, 1),
  Y = rnorm(10, 0, 2),
  Z = rnorm(10, 0, 4))

stocks %>%
  mjs_plot(x=time, y=X) %>%
  mjs_line() %>%
  mjs_add_line(Y) %>%
  mjs_add_line(Z) %>%
  mjs_axis_x(xax_format="date")

hrbrmstr/metricsgraphics documentation built on May 17, 2019, 5:10 p.m.