Refactor chartSeries() function to be a wrapper for chart_Series() function #95
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Remain the code that handles argument differ from chart_Series in the original chartSeries function. Parameters created by chartTheme() are passed to the plot object and coordinate with parameters created by chart_theme(), theme$BBands, for example.
Add legend to show the last close price of series.
As the direction of minor ticks of the original chartSeries is downward, the second action of replot_xts-class object is modified to reach that.
To create the chart the same as quantmod::chartSeries, border of plotting area and inbox color are applied. Remove x-axis grid line.
In the original chartSeries, space of left and right sides is reserved. x limit is reset to reach that, which makes the chart more readable. Change inbox color from theme$fill to theme$area. Since the inbox area is behind of horizontal ticks and border should be on the top of the ticks, border is added after the ticks and the inbox area.
Add TA functionality to handle "addVo()" argument. If Volume is not included in x, "addVo()" will be removed from TA. Allow TA=NULL to work.
To coordinate with addPoints(), when x is specified by numeric vector and without subsetting the intersection of x and the index of series will be FALSE because xsubset is always "". It should be the index of the raw series, namely, 1:NROW(x), which is also the original setting in chartSeries.
When reChart is called to draw subset series, minor ticks on xycoords$x do not change with the subset sereis. Fix xycoords$x to be xycoords$x[1:NROW(xsubset)] in the x-axis expression.
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Since "Volume" is not included in xts series, show.vol will be FALSE and
grep("addVo()", TA) returns 'integer(0)', TA specified in the argument
will not be added to the plot object. 'match' is applied instead.
In the original chartSeries that used S4 method, chart.layout is called to setup layout and margins. Since now chartSeries is a wrapper for chart_Series, it should be layout-free and only margins are applied.
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The last price displayed on chart will change if subset is specified in chartSeries. However when zoomChart is called view the subset series, the last price didn't change. The displayed price should be the price of the last day in the subset period.
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Users can now enter TAs' color settings by calling chartTheme(addTA = list(...)) to create custom theme parameters. BBands settings in .chart.theme is refactored to coordinate with addBBands function.
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chartSeries() function is now a wrapper for chart_Series() function so S4 method and objects,
chobandchobTA, are deprecated. That means chartSeries.chob() function and chartTA() function are no longer available as well. Since chartSeries() has more detailed arguments than chart_Series(), mostly color settings, main changes are matching the parameters created by chartTheme() function with parameters of chart_theme() function that already exist in plot_object$Env$theme and passing those arguments to the plot object. Minor ticks setting of chartSeries() is different from its default setting in plot.xts() so the action is rewritten to make minor ticks downwards and space for both sides is reserved.