R/DualaxisLinechart.R

In DataVisualizations: Visualizations of High-Dimensional Data

DualaxisLinechart=DualAxisLineChart=function(X,Y1,Y2,xlab='X',y1lab='Y1',y2lab='Y2',main='Dual Axis Line Chart',cols=c('black','blue'),Overlaying='y',SaveIt=FALSE){
  if (!requireNamespace('plotly',quietly = TRUE)){
    
    message('Subordinate package (plotly) is missing. No computations are performed.
Please install the package which is defined in "Suggests".')
    
    return('Subordinate package (plotly) is missing. No computations are performed.
Please install the package which is defined in "Suggests".')
  }
  

  p <- plotly::plot_ly()
  p <-
    plotly::add_lines(
      p,
      x = ~ X,
      y = ~ Y1,
      name = y1lab,
      yaxis = "y",
      line = list(color = cols[1])
    )
  p <-
    plotly::add_lines(
      p,
      x = ~ X,
      y = ~ Y2,
      name = y2lab,
      yaxis = "y2",
      line = list(color = cols[2])
    )
  p <-  plotly::layout(
    p,
    title = main,
    yaxis2 = list(
      side = "right",
      title = y2lab,
      overlaying = Overlaying,
      showgrid = FALSE
    ),
    xaxis = list(title = xlab,
                 showgrid = FALSE),
    yaxis = list(
      side = "left",
      title = y1lab,
      showgrid = FALSE
    )
  )
  p
  if (SaveIt) {
    requireNamespace('htmlwidgets')
    htmlwidgets::saveWidget(p, file = "DualAxisLineChart.html")
  }
  return(p)
}