ARTICLE

A variety of Chart Engines

Posted by Daniel Stefanescu in Articles | GDI+ & Graphics on September 07, 2001

Tags: .net, array, Bitmap, c#, Chart Engine, ChartGenerator, ChartLine, DrawRectangle, FillRectangle, GDI+, GDI+ and Graphics, Graphics, Pen class, struct, System.Drawing.Imaging

The original code came from Scott Guthrie’s chart engine example. The differences from original code.

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ChartEngineDS.zip

Description

The original code came from Scott Guthries chart engine example. The differences from original code are:

Some of charts attributes are exposed as properties
- ChartGenerator.ChartLine.Color
- ChartGenerator.ChartLine.Style
- ChartGenerator.ChartLine.Width
The above are used for setting the properties of each line from chart
- ChartGenerator.Engine.ImageBackgroundColor
- ChartGenerator.Engine.ImageHeight
- ChartGenerator.Engine.ImageWidth
- ChartGenerator.Engine.IsScaled - determines when the chart will be scaled or not.
The minimum and maximum points are calculated inside using Array methods. We copied the Y values of each line into an array, sorted the array and using the first and the last member of array determined the maximum and the minimum.

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