barplot.tis: Barplot for Time Indexed Series

Description Usage Arguments Details Value See Also

View source: R/barplot.tis.R


This is barplot for tis objects. If the first argument to barplot is a tis object, this function is called. There may be more than one tis argument. See details below.


## S3 method for class 'tis'
barplot(height, ...)



a tis object. There may, however, be more than just one tis argument in the call.


arguments passed on to barplot.default.


barplot.tis constructs a call to barplot2. The tis arguments, including but not limited to height, are pulled out and used to construct a height argument for the constructed call, and the width argument will be calculated as described below.

If the series sent in are multivariate, i.e., have multiple columns, the constructed height argument will also have multiple columns, which is how barplot does stacked bar charts. If you supply several multivariate series to barplot.tis, all of the series must have the same number of columns.

If the beside argument is supplied in the ... list, the width argument will be set to d/(NC + 0.5), where d is the mean difference in decimal time units (where one year = 1, a quarter = 0.25, and so on) of the series observation times, NC is the number of columns in the series arguments, and space will be set to c(0, 0.5). The effect of all this will be to make the total width of the barplot match the length (in years) of the series plotted. When combined with the calculated x.offset described below, this will make the plot align correctly on the time axis. However, note that the alignment will only really be correct if all of the series plotted have the same frequency, as the underlying barplot.default forces each group of bars to have the same width when beside = TRUE.

If the series being plotted are of different frequencies, you should not set beside, leaving it at the default value of FALSE. This will cause the widths of the bars for each series to be inversely proportional to the series frequencies, and the individual observations will align correctly on the time axis.

barplot.tis finds the earliest starting date of the tis arguments and shifts the plot rightward along the x-axis by that amount, which aligns the first bar with its start date. That is, if gdp is the tis argument with the earliest start date of all the series being plotted, the plot is shifted rightward to make the first bar align with time(start(gdp)).

You can use tisPlot to draw axes, axis labels, and tick marks for a barplot. First call tisPlot with the series you want to plot, and other arguments set to create the range, axes, labels, tick marks and so on that you want, but set color = 0 to make the series lines invisible. Then call barplot with the series and additional barplot arguments, but set the add argument to add = TRUE. This adds the barplot, without axes, to the existing tisPlot.


same as barplot.default.

See Also

barplot, barplot2

tis documentation built on Sept. 29, 2021, 1:06 a.m.