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ID: 21927, TQSpiderGraph

by Oliver Touzot Email: Anonymous

A component which displays Spider graphs (aka "radar graphs"). Lots of preoperties (axes auto-sizing, lines highlighting by criteria, aso).
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For Delphi, Version 6.0  to 7.0 115 downloads
Copyright: No significant restrictions

Size: 387,358 bytes
Updated on Mon, 05 Jul 2004 10:33:34 GMT
Originally uploaded on Mon, 05 Jul 2004 10:24:46 GMT
SHA1 Hash: 3E597CCE05A3EDD6440A67FD2C353236F498994D
MD5 Hash: 54CE6969DCF7C1812B78678117D52F74

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This component displays spider graphs (aka "radar graph") with as many axes and lines as you want (keep it readible...).

It has numerous properties which apply more particularly to :
* the axes ( number, colors, individual max and min)
* its background (transparency, single color, oriented gradient)
* the number of lines, their color, caption thickness,aso
* It tracks mouse moves. Displays lines values near the pointer and/or raises events when the mouse enters or exits a line

Spider graphs are especially usefull to allow your user to easy visualy compare the values of different sets of datas. TQSpiderGraph provides means to easily achieve such a visual comparison :

Its line highlighting functions allow you to highlight :
* The line(s) with the widest or narrowest area ;
* The one(s) with the highest (or lowest) value(s) on such or such axe ;
* or simply the one of your choice, using its index.

Highlighting can be made using one or a combinaison of the following "higlight modes" :
* Change higlighted line(s) color,
* Change higlighted line(s) thickness;
* Show the points of this line only ;
* And why not, do temporarily "flash" this line

TQSpiderGraph contains much more features. An example is it's ability to optionally auto define the limits of each axe, depending on the values you send to it.

It has been developped and tested under D6PE, and comes with full source ;

The zip file contains the component source code, a compiled demo and its source, together
with an "Howto" file, in html format.

Some screenshots can be seen at

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