ChartDirector 7.0 (ASP/COM/VB Edition)

Finance Chart (2)

This example demonstrate creating a full-featured finance chart, with candlesticks, moving averages, Donchian channel, volume bars, MACD and Stochastic indicators.

This example employs the FinanceChart library add-on to allow complex financial charts to be composed easily. In this example, the key steps are:

For simplicity and to allow this example to run without connecting to a real database, a RanTable object is used to simulate the data. RanTable is a ChartDirector utility class used for creating tables with random numbers.

Source Code Listing

[Web Version (in ASP)] aspdemo\finance2.asp
```<%@ language="vbscript" %> <% Set cd = CreateObject("ChartDirector.API") ' 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. Set rantable = cd.RanTable(9, 6, noOfDays + extraDays) ' Set the 1st col to be the timeStamp, starting from Sep 4, 2002, with each row representing one ' day, and counting week days only (jump over Sat and Sun) Call rantable.setDateCol(0, DateSerial(2002, 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. Call rantable.setHLOCCols(1, 100, -5, 5) ' Set the 6th column as the vol data from 5 to 25 million Call 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) ' Create a FinanceChart object of width 640 pixels Set c = cd.FinanceChart(640) ' Add a title to the chart Call c.addTitle("Finance Chart Demonstration") ' Set the data into the finance chart object Call c.setData(timeStamps, highData, lowData, openData, closeData, volData, extraDays) ' Add a slow stochastic chart (75 pixels high) with %K = 14 and %D = 3 Call c.addSlowStochastic(75, 14, 3, &H006060, &H606000) ' Add the main chart with 240 pixels in height Call c.addMainChart(240) ' Add a 10 period simple moving average to the main chart, using brown color Call c.addSimpleMovingAvg(10, &H663300) ' Add a 20 period simple moving average to the main chart, using purple color Call c.addSimpleMovingAvg(20, &H9900ff) ' Add candlestick symbols to the main chart, using green/red for up/down days Call c.addCandleStick(&H00ff00, &Hff0000) ' Add 20 days donchian channel to the main chart, using light blue (9999ff) as the border and ' semi-transparent blue (c06666ff) as the fill color Call c.addDonchianChannel(20, &H9999ff, &Hc06666ff) ' Add a 75 pixels volume bars sub-chart to the bottom of the main chart, using green/red/grey for ' up/down/flat days Call c.addVolBars(75, &H99ff99, &Hff9999, &H808080) ' Append a MACD(26, 12) indicator chart (75 pixels high) after the main chart, using 9 days for ' computing divergence. Call c.addMACD(75, 26, 12, 9, &H0000ff, &Hff00ff, &H008000) ' Output the chart Set viewer = cd.WebChartViewer(Request, "chart1") Call viewer.setChart(c, cd.SVG) %> <!DOCTYPE html> <html> <head> <title>Finance Chart (2)</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Finance Chart (2) </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.asp?file=<%= Request("SCRIPT_NAME") %>">View Chart Source Code</a> </div> <!-- ****** Here is the chart image ****** --> <%= viewer.renderHTML() %> </body> </html>```

[Windows Version (in Visual Basic)] vbdemo\finance2.cls
```Public Sub createChart(viewer As Object, chartIndex As Integer) Dim cd As New ChartDirector.API ' Create a finance chart demo containing 100 days of data Dim noOfDays As Long noOfDays = 100 ' To compute moving averages starting from the first day, we need to get extra data points ' before the first day Dim extraDays As Long 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. Dim rantable As RanTable Set rantable = cd.RanTable(9, 6, noOfDays + extraDays) ' Set the 1st col to be the timeStamp, starting from Sep 4, 2002, with each row representing one ' day, and counting week days only (jump over Sat and Sun) Call rantable.setDateCol(0, DateSerial(2002, 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. Call rantable.setHLOCCols(1, 100, -5, 5) ' Set the 6th column as the vol data from 5 to 25 million Call rantable.setCol(5, 50000000, 250000000) ' Now we read the data from the table into arrays Dim timeStamps() timeStamps = rantable.getCol(0) Dim highData() highData = rantable.getCol(1) Dim lowData() lowData = rantable.getCol(2) Dim openData() openData = rantable.getCol(3) Dim closeData() closeData = rantable.getCol(4) Dim volData() volData = rantable.getCol(5) ' Create a FinanceChart object of width 640 pixels Dim c As FinanceChart Set c = cd.FinanceChart(640) ' Add a title to the chart Call c.addTitle("Finance Chart Demonstration") ' Set the data into the finance chart object Call c.setData(timeStamps, highData, lowData, openData, closeData, volData, extraDays) ' Add a slow stochastic chart (75 pixels high) with %K = 14 and %D = 3 Call c.addSlowStochastic(75, 14, 3, &H006060, &H606000) ' Add the main chart with 240 pixels in height Call c.addMainChart(240) ' Add a 10 period simple moving average to the main chart, using brown color Call c.addSimpleMovingAvg(10, &H663300) ' Add a 20 period simple moving average to the main chart, using purple color Call c.addSimpleMovingAvg(20, &H9900ff) ' Add candlestick symbols to the main chart, using green/red for up/down days Call c.addCandleStick(&H00ff00, &Hff0000) ' Add 20 days donchian channel to the main chart, using light blue (9999ff) as the border and ' semi-transparent blue (c06666ff) as the fill color Call c.addDonchianChannel(20, &H9999ff, &Hc06666ff) ' Add a 75 pixels volume bars sub-chart to the bottom of the main chart, using green/red/grey ' for up/down/flat days Call c.addVolBars(75, &H99ff99, &Hff9999, &H808080) ' Append a MACD(26, 12) indicator chart (75 pixels high) after the main chart, using 9 days for ' computing divergence. Call c.addMACD(75, 26, 12, 9, &H0000ff, &Hff00ff, &H008000) ' Output the chart Set viewer.Picture = c.makePicture() End Sub```