chartSeries: Create Financial Charts

Description

Charting tool to create standard financial charts given a time series like object. Serves as the base function for future technical analysis additions. Possible chart styles include candles, matches (1 pixel candles), bars, and lines. Chart may have white or black background.

Usage

chartSeries(x,
           type = c("auto", "candlesticks", "matchsticks", "bars","line"), 
           subset = NULL,
           show.grid = TRUE, 
           name = NULL,
           time.scale = NULL,
           TA = c(addVo()),
           line.type = "l",
           bar.type = "ohlc",
           xlab = "time", ylab = "price", theme = chartTheme("black"),
           major.ticks='auto', minor.ticks=TRUE,
           up.col,dn.col,color.vol = TRUE, multi.col = FALSE,
           ...)

Arguments

an OHLC object - see details

type

style of chart to draw

subset

currently unused

show.grid

display price grid lines?

name

name of chart

time.scale

what is the timescale? automatically deduced

a vector of technical indicators and params

line.type

type of line in line chart

bar.type

type of barchart - ohlc or hlc

xlab

derived time scale

ylab

y axis label

theme

a chart.theme object

major.ticks

where should major ticks be drawn

minor.ticks

should minor ticks be draw?

up.col

up bar/candle color

dn.col

down bar/candle color

color.vol

color code volume?

multi.col

4 color candle pattern

...

additional parameters

Value

Returns a standard chart plus volume, if available, suitably scaled.

Details

Currently displays standard style OHLC charts familiar in financial applications, or line charts when not passes OHLC data. Works with objects having explicit time-series properties.

Line charts are created with close data, or from single column time series.

TA allows for the inclusion of a variety of chart overlays and tecnical indicators. A full list is available from addTA. The default TA argument is addVo() - which adds volume, if available, to the chart being drawn.

theme requires an object of class chart.theme, created by a call to chartTheme. This function can be used to modify the look of the resulting chart. See chart.theme for details.

line.type and bar.type allow further fine tuning of chart styles to user tastes.

multi.col implements a color coding scheme used in some charting applications, and follows the following rules:

grey

{ => Op[t] < Cl[t] and Op[t] < Cl[t-1]} white{ => Op[t] < Cl[t] and Op[t] > Cl[t-1]} red{ => Op[t] > Cl[t] and Op[t] < Cl[t-1]} black{ => Op[t] > Cl[t] and Op[t] > Cl[t-1]}

References

Josh Ulrich - TTR package and multi.col coding

Examples

Run this code

getSymbols("YHOO")
chartSeries(YHOO)
chartSeries(YHOO,theme=chartTheme('white'))
chartSeries(YHOO,TA=NULL)   #no volume
chartSeries(YHOO,TA=c(addVo(),addBBands()))  #add volume and Bollinger Bands from TTR

addMACD()   #  add MACD indicator to current chart

setTA()
chartSeries(YHOO)   #draws chart again, this time will all indicators present

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