Creating Charts and Pie Graphs using Data with Holes



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Environment: VC 6, SP 4, Windows 2000

Introduction

In my work, I always want to display several data series with holes together. Massimo Colurcio has developed a control to display data with a hole, but it is not easy to use, especially when the data is very sparse, so I decided to develop my own control based on his work. At the same time, I also want to show this data series in a pie chart fashion.

How to Use the Application

Follow these steps to set up and use the Chart and Pie project:

  1. Add the files in the source package to your project.
  2. Do initilization. See CChartView::OnInitialUpdate().
  3. Call Add of CDataChart to add datasets to the control.

Use the following code as shown below:

void Add(int nDatasetID, int nIndex, double nData);

SetStyle(STYLE_LINE)
to display a line chart, or
SetStyle(STYLE_PIE)
to display a pie chart.

And that's all.

Downloads

Download demo project - 62 Kb
Download source - 17 Kb


Comments

  • Debug Assertion Failed

    Posted by Legacy on 01/20/2003 12:00am

    Originally posted by: Allen.WeiHao

    When you resize the chart view to a comparable small size, the program corrupt.

    Reply
  • Detected memory leaks!

    Posted by Legacy on 05/11/2002 12:00am

    Originally posted by: Chile

    Detected memory leaks!
    Dumping objects ->
    F:\MyProject\VC\ChartnPie\DataChart.cpp(1433) : {267} normal block at 0x00347CD0, 28 bytes long.
    Data: < > 02 00 00 00 02 00 00 00 02 00 00 00 01 00 00 00
    Object dump complete.

    Reply
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