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dzChart for Delphi and Kylix 2.1.1 |
Version: 2.1.1 |
Freeware By: Thomas Mueller  |
| Downloads: 1037 Hits: 5744 |
Source: YES |
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Description of dzChart for Delphi and Kylix :
This is a free (MPL 1.1) component package (actually two, a designtime and a runtime package) for Borland Delphi and Kylix containing some charts. They can not compete with commercial products but they do what I needed.
This is not 100% original work, I used Paul Warren's Homegrown Charts as a basis, but I extended them significantly. Paul has allowed me to release the result with a different name under the Mozilla Public Licence.
Features
The package contains three components
* TdzXYChart
* TdzPieChart (not finished)
* TdzPolynomialDataseries
TdzXYChart
TdzXYChart can draw a two dimensional chart using different formats for lines and points. It automatically scales the axes. It can also draw a bar chart. The number of data series containing the values is virtually unlimited. A special chart type called ctAlternateLine allows to have lines from -infinity to +infinity (think quality control charts). The point styles psUpArrow and psDownArror allow to mark specific points with an up or down arrow.
New in version 2.1.0 is the ability to draw multi value data series as High/Low High/Low/Open/Close and Candle charts.
TdzPieChart
TdzPieChart is not finished. I have only added a few methods and properties to make it compatible with the new design but also commented out some of Paul's original code to get it to compile at all. If you need a working pie chart, you might be better off using the one from Paul. Of course you can extend and fix this component yourself and send me a patch, I will gladly include it into the dzChart package. Maybe I will even make it work myself at some future time, if need arises.
TdzPolynomialDataseries
TdzPolynomialDataseries is a data series component for drawing curves based on a polynom (you remember those from maths classes, don't you? y = ax^2 + bx + c). It includes a property editor for specifying the factors.
Non-Features
Neither of the charts has any interactive capabilities, so zooming or moving the display using the mouse is not possible. Of course you could add these functions yourself. ;-)
Please note that this package has only been tested with Delphi 7, Delphi 2005 and Kylix 3. Since it makes use of subcomponents I doubt that it will even compile with anything older than Delphi 6. I don't plan to support any older Delphi versions.
Related:
Chart, Delphi, Free, Mpl |
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