ChartDirector 6.0 (ColdFusion Edition)
Finance Chart Custom Symbols
Source Code Listing
<cfscript> // ChartDirector for ColdFusion API Access Point cd = CreateObject("java", "ChartDirector.CFChart"); // Create a finance chart demo containing 100 days of data noOfDays = 100; // To compute moving averages starting from the first day, we need to get extra data points before // the first day extraDays = 30; // In this exammple, we use a random number generator utility to simulate the data. We set up the // random table to create 6 cols x (noOfDays + extraDays) rows, using 9 as the seed. rantable = cd.RanTable(9, 6, noOfDays + extraDays); // Set the 1st col to be the timeStamp, starting from Sep 4, 2014, with each row representing one // day, and counting week days only (jump over Sat and Sun) rantable.setDateCol(0, CreateDate(2014, 9, 4), 86400, True); // Set the 2nd, 3rd, 4th and 5th columns to be high, low, open and close data. The open value starts // from 100, and the daily change is random from -5 to 5. rantable.setHLOCCols(1, 100, -5, 5); // Set the 6th column as the vol data from 5 to 25 million rantable.setCol(5, 50000000, 250000000); // Now we read the data from the table into arrays timeStamps = rantable.getCol(0); highData = rantable.getCol(1); lowData = rantable.getCol(2); openData = rantable.getCol(3); closeData = rantable.getCol(4); volData = rantable.getCol(5); // Custom data series should be of the same length as the OHLC data series buySignal = ArrayNew(1); sellSignal = ArrayNew(1); // // The following is just an arbitrary algorithm to create some meaningless buySignal and sellSignal. // They are just for demonstrating the charting engine. Please do not use them for actual trading. // sma5 = cd.ArrayMath(closeData).movAvg(5).result(); sma20 = cd.ArrayMath(closeData).movAvg(20).result(); for (i = 0; i LT ArrayLen(sma5); i = i + 1) { buySignal[i + 1] = cd.NoValue; sellSignal[i + 1] = cd.NoValue; if (i GT 0) { if ((sma5[i] LTE sma20[i]) And (sma5[i + 1] GT sma20[i + 1])) { buySignal[i + 1] = lowData[i + 1]; } if ((sma5[i] GTE sma20[i]) And (sma5[i + 1] LT sma20[i + 1])) { sellSignal[i + 1] = highData[i + 1]; } } } // Create a FinanceChart object of width 640 pixels c = cd.FinanceChart(640); // Add a title to the chart c.addTitle("Finance Chart with Custom Symbols"); // Set the data into the finance chart object c.setData(timeStamps, highData, lowData, openData, closeData, volData, extraDays); // Add the main chart with 240 pixels in height mainChart = c.addMainChart(240); // Add buy signal symbols to the main chart, using cyan (0x00ffff) upward pointing arrows as symbols buyLayer = mainChart.addScatterLayer(ArrayNew(1), buySignal, "Buy", cd.ArrowShape(0, 1, 0.4, 0.4), 11, "0x00ffff"); // Shift the symbol lower by 20 pixels buyLayer.getDataSet(0).setSymbolOffset(0, 20); // Add sell signal symbols to the main chart, using purple (0x9900cc) downward pointing arrows as // symbols sellLayer = mainChart.addScatterLayer(ArrayNew(1), sellSignal, "Sell", cd.ArrowShape(180, 1, 0.4, 0.4), 11, "0x9900cc"); // Shift the symbol higher by 20 pixels sellLayer.getDataSet(0).setSymbolOffset(0, -20); // Add a 5 period simple moving average to the main chart, using brown color c.addSimpleMovingAvg(5, "0x663300"); // Add a 20 period simple moving average to the main chart, using purple color c.addSimpleMovingAvg(20, "0x9900ff"); // Add candlestick symbols to the main chart, using green/red for up/down days c.addCandleStick("0x66ff66", "0xff6666"); // Add a volume indicator chart (75 pixels high) after the main chart, using green/red/grey for // up/down/flat days c.addVolIndicator(75, "0x99ff99", "0xff9999", "0x808080"); // Append a 14-days RSI indicator chart (75 pixels high) after the main chart. The main RSI line is // purple (800080). Set threshold region to +/- 20 (that is, RSI = 50 +/- 25). The upper/lower // threshold regions will be filled with red (ff0000)/blue (0000ff). c.addRSI(75, 14, "0x800080", 20, "0xff0000", "0x0000ff"); // Output the chart chart1URL = c.makeSession(GetPageContext(), "chart1"); </cfscript> <html> <body style="margin:5px 0px 0px 5px"> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> Finance Chart Custom Symbols </div> <hr style="border:solid 1px #000080" /> <cfoutput> <div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em"> <a href='viewsource.cfm?file=#CGI.SCRIPT_NAME#'>View Source Code</a> </div> <img src="getchart.cfm?#chart1URL#" /> </cfoutput> </body> </html> |