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Relevance Indicator

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Submitted on: 10/5/2002 5:30:36 PM
By: Daniel M. Hendricks  
Level: Intermediate
User Rating: By 5 Users
Compatibility:PHP 4.0

Users have accessed this code 1427 times.
 

 
     A relevancy bar generator. Can be used to create a "relevancy" statistic bar for custom search engine, to display user voting statistics (ie, 3 out of 4 stars), or display any other percentage statistically. Originally created for searchforcode.com, but free to use for whatever you like. See the included screenshot for samples of how to use it, and please vote!

 
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Terms of Agreement:   
By using this code, you agree to the following terms...   
1) You may use this code in your own programs (and may compile it into a program and distribute it in compiled format for languages that allow it) freely and with no charge.   
2) You MAY NOT redistribute this code (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
3) You may link to this code from another website, but ONLY if it is not wrapped in a frame. 
4) You will abide by any additional copyright restrictions which the author may have placed in the code or code's description.

    //**************************************
    //     
    // Name: Relevance Indicator
    // Description:A relevancy bar generator
    //     . Can be used to create a "relevancy" st
    //     atistic bar for custom search engine, to
    //     display user voting statistics (ie, 3 ou
    //     t of 4 stars), or display any other perc
    //     entage statistically. Originally created
    //     for searchforcode.com, but free to use f
    //     or whatever you like. See the included s
    //     creenshot for samples of how to use it, 
    //     and please vote!
    // By: Daniel M. Hendricks
    //
    //This code is copyrighted and has    // limited warranties.Please see http://
    //     www.Planet-Source-Code.com/vb/scripts/Sh
    //     owCode.asp?txtCodeId=766&lngWId;=8    //for details.    //**************************************
    //     
    
    <?
    $docroot = $DOCUMENT_ROOT; //On Windows machines, you'll need to hard code the current path.
    $percent = Round(($value/$max)*100, 0);
    $rectwidth = $width;
    if ($showpercent) {	$width += (imagefontwidth($fontsize) * strlen($percent."%")) + imagefontwidth("%"); }
    $image = imagecreate($width, $height);
    //Set the colors and calculate font widt
    //     h/height.
    $bg_color = imagecolorallocate($image, 0xFF, 0xFF, 0xFF); //white
    $bar_color = imagecolorallocate($image, 0xFF, 0x40, 0x40); //red
    $border_color = imagecolorallocate($image, 0x00, 0x00, 0x00); //black
    $font_color = imagecolorallocate($image, 0x00, 0x00, 0x00); //black
    $font_width = imagefontwidth($fontsize) * strlen($percent."%"); 
    $font_height = imagefontheight($fontsize);
    //Bar Generation Code
    imagerectangle($image, 0, 0, $rectwidth-1, $height-1, $border_color);
    ImageFilledRectangle($image, 1, 1, $rectwidth*($percent/100)-2, $height-2, $bar_color);
    for($a = 0; $a <= $rectwidth-1; $a += ($rectwidth/$max)) {
    	imageline($image, $a, 0, $a, $height, $border_color);
    }
    if ($showpercent) { imagestring($image, $fontsize, $width-$font_width, ($height-$font_height)/2, $percent."%", $font_color); }
    // Flush Image 
    header("Content-type: image/png");
    ImagePNG($image);
    ImageDestroy($image);
    ?>


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Other User Comments
10/5/2002 6:34:22 PM:Agret
cool!
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10/6/2002 1:29:25 PM:Kage
While I STRONGLY recommend against 
using Hexidecimal Hash values for the 
colors, it is still a good code. 5 
globes.
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10/8/2002 4:44:19 AM:Alvaro Pe˝alba
May be you could add default 
values:
if(!isset($width)) 
$width=70;
to shorten the url in 
some cases
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11/1/2002 9:03:38 AM:
Very cool and useful.  It would be nice 
though, if your max is set at 100 or 
something to NOT have 100 little bars.  
I think I can fix that though.
Well 
done!
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11/5/2002 12:43:24 AM:Daniel M. Hendricks
If you want to have your max a large 
number like 100, you could always 
divide all your numbers by a common 
number to reduce the number of bars.  
For example, if you divided all your 
numbers by 100 and set the maximum to 
1, you would see no bars at all.  If 
you were to divide all your numbers by 
5 and set your max to 20, you would see 
bars every 20 integers.  It's all in 
manipulating the multipliers.  If this 
makes no sense to you, the code is 
simple enough to change to do what you 
like...
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