The RAG Component is an easy to use set of Delphi units that allows you to display nice graphs with
different appearance like line, area or bar graphs. The RAG Component also supports labelling for
each corner of the graph and dynamic resizing at runtime. Each Graph contained by a RAG can also
change its display type, line width and color dynamically at runtime.
Features
One RAG can contain multiple graphs.
Four different graph types: Lines, Area, Bars (Relative and Absolute).
The graph type of each graph conained by a RAG can be changed dynamically at runtime.
Automatic vertical scaling of the graphs depending to their highest value.
Customizable grid, e.g. vertical and horizontal grid step.
Each corner of a RAG can be labelled individually and each label can be shown or hidden
separately.
Today I received a mail from Terry Klasema where he reported an error that occurs inside
the TRAGGraph class when several graphs are drawn with different line width and color.
Terry also sent me the fixed code so I didn't have to search the bug. Thanks!
Nov 26, 2006
Finally I had some time to write a small tutorial (will be available soon) how to integrate a RAG in a Delphi
application. I also tried to write a component, but Delphi components are the worst
thing I ever had to deal with (I didn't achieve my goal to create a component that works).
Jul 24, 2006
I added support for captioning the corners of a graph with different fonts, font
styles and colors. It should be the last improvement for some months, because the new school year will start in a few days and the a-levels are approaching. I'm very
glad that we had success establishing the computer science class.
Jun 26, 2006
By request from Carsten I added the capability to show bar graphs with a height relative
to the highest value contained by the graph and some other improvements like the ability
to change the grid color and back color and the line width.
Jun 05, 2006
First, bug free version of RAG. It was some hard work, but I think the result is not bad.
Now I'm sure: I hate commenting code, because "real programmers don't comment their code.
If it was hard to write it should be hard to read."
The archive contains an executable that demonstrates the capabilities of the RAG Component.
218 kB
marks updates!
Contact
If you have any questions, suggestions, bug reports or feature request concerning the RAG component, I would be
very pleased if you send me an e-mail to regressionanalysisgraph-dev(@)yahoo.de.
)
