Create S3 object of data for table of sparklines
sparklineTable(df, row.var, col.vars, xvar = NULL, xrange.labels = NULL)data.frame of values to plot.
variable for rows of the table
variables for columns of the table
optional name of variable for horizontal axis of sparkline plots
optional vector of length 2 with labels for the first and last quantities plotted on x-axis, often a date and/or time
plotSparklineTable