lazarus

mirror of https://gitlab.com/freepascal.org/lazarus/lazarus.git synced 2025-06-04 10:58:18 +02:00

History

ask 3bd2cdda8e TAChart: Allow TUserDefinedChartSource to declare itself sorted. git-svn-id: trunk@25927 -		2010-06-05 17:02:07 +00:00
..
demo	TAChart: Add tools for more realistic performance testing	2010-06-05 16:12:41 +00:00
fpdoc
icons
Makefile
Makefile.fpc
README.txt
tachartaxis.pas	TAChart: Use EnsureOrder and NormalizeRect throughout the code	2010-06-05 14:22:22 +00:00
tachartlazaruspkg.lpk
tachartlazaruspkg.pas
tachartutils.pas	TAChart: Use EnsureOrder and NormalizeRect throughout the code	2010-06-05 14:22:22 +00:00
tacustomseries.pas	TAChart: Use binary search to speed up extent detection for sorted series	2010-06-05 16:04:50 +00:00
tadbsource.pas
tagraph.lrs
tagraph.pas	TAChart: Use EnsureOrder and NormalizeRect throughout the code	2010-06-05 14:22:22 +00:00
talegend.pas
taseries.pas	TAChart: Fix bounds search for rotated line series	2010-06-05 16:11:30 +00:00
taserieseditor.pas
tasources.pas	TAChart: Allow TUserDefinedChartSource to declare itself sorted.	2010-06-05 17:02:07 +00:00
tasubcomponentseditor.lfm
tasubcomponentseditor.pas
tatools.pas	TAChart: Use EnsureOrder and NormalizeRect throughout the code	2010-06-05 14:22:22 +00:00
tatransformations.pas
tatypes.pas	TAChart: Reduce CodeObserver warnings	2010-04-28 12:45:15 +00:00

README.txt

TAChart is a charting LGPL component for Lazarus (TeeChart like). 
It contains the functions that Philippe Martinole developed for the TeleAuto project and lots 
of changes introduced by Luis Rodrigues while porting the Epanet application from Delphi to Lazarus.


Its main caracteristics are :

    * Pie Series
    * Bar Series
    * Area Series
    * Line Series (can work as Point Series)    
    * Unlimited number of  graphs
    * Unlimited number of points
    * Graph legend
    * Graph title
    * Graph footer
    * Axis labels
    * Interactive zoom
    * Reticule or vertical reticule with point measure
    * Mirror on X axis
    * Auto or manual graph limits
    * Smart marks drawing
    * Vertical and horizontal line graph type
    * Easily extensible to new graph types


Why Create This
---------------

I've been porting Epanet from Delphi into Lazarus, since I need a TeeChart like component and TeeChart was not free
I had to build a new component.

I looked arround the net for a good component and found Philippe's TAChart and decided to improve it.

There is still plenty of bugs on the component but at least it works with all the cases I need. I will continue to develop
this, but since it's allready working I decided to submit to general review.
    
Installation
------------
    * Open the package tachartlazaruspkg.lpk with Component / Open package file (.lpk)
    * Click on Compile
    * Click on Install

Changes
-------

* 01/06/2008 - Fixed Legend selection bug, DrawLegend bugfix (by Anton Vychegzhanin)
* 25/01/2008 - Code cleanups and bugfixes (bugfixes by Uwe Zimmermann and Oled)
* 22/01/2008 - Implemented ZoomFull, PaintOnCanvas and slight modifications to add TSerie pen style (by oleg)
* 27/09/2007 - Bugfixes and partially implemented multibar in TBarSeries
* 29/08/2007 - Bugfixes and implement Bug fixes SaveToBitmapFile 
                 and CopyToClipboardBitmap
* 27/08/2007 - Bugfixes and implement Inverted Axis (by Helio Rocha-Pinto)
* 17/04/2007 - Series clipping bugfixes and partially implement TSeriesPointer
* 12/03/2007 - Bugfixes and implement ShowInLegend
* 01/01/2007 - Initial Release

Copyright (C) 2006-2007 by Luis Rodrigues  <lr@neei.uevora.pt>
Copyright (C) 2005-2006 by Philippe Martinole  <philippe.martinole@teleauto.org>