2D Pie Chart source code!!!

Anon · 04-01-2001, 07:04 PM

2D Pie Chart source code, please feel free to sent me comments, thanks!

PHP Code:


			
<?php

    /********************************

      2D Pie Chart Version 1.0

      Programer: Xiao Bin Zhao

      Date: 03/31/2001

      All Rights Reserved 2001.

    ********************************/

    

    /*************Configuration Starts Here******************/

    $chartTitle = "Most Popular Stars";            //pie chart name

    $logo = "www.asianstar.com";                   //logo

    /*************************End****************************/

    

    /*****************For Programers Only********************/

    $imageWidth = 300;                             //image width 

    $imageHeight = 200;                            //image height

    $diameter = 150;                               //pie diameter 

    $centerX = 100;                                //pie center pixels x

    $centerY = 100;                                //pie center pixels y

    $labelWidth = 10;                              //label width, no need to change 

    /*************************End****************************/

    

    $data = array( 156, 20, 80, 100, 124, 56, 34, 32, 67 );

    $item = array( "Vivian", "Alan", "Valen", "Chow", "Chen", "COCO", "SiSi", "Lee", "Zhao" );

    for( $i = 0; $i < count( $data ); $i++ )

    {

        $dataTotal += $data[ $i ];

    }

    

    function circlePoint( $deg, $dia )

    {

        $x = cos( deg2rad( $deg ) ) * ( $dia / 2 );

        $y = sin( deg2rad( $deg ) ) * ( $dia / 2 );    

        return array( $x, $y );

    }

    

    $im = ImageCreate( $imageWidth, $imageHeight );

    

    $color[] = ImageColorAllocate( $im, 255, 0, 0 ); //red

    $color[] = ImageColorAllocate( $im, 255, 204, 0 );//yellow

    $color[] = ImageColorAllocate( $im, 153, 204, 0 );//green

    $color[] = ImageColorAllocate( $im, 153, 51, 255 );//purple

    $color[] = ImageColorAllocate( $im, 0, 128, 255 );//blue

    $color[] = ImageColorAllocate( $im, 255, 0, 128 );//pink

    $color[] = ImageColorAllocate( $im, 153, 51, 255 );//purple

    $color[] = ImageColorAllocate( $im, 192, 192, 192 );//grey

    $color[] = ImageColorAllocate( $im, 204, 204, 0 );

    $color[] = ImageColorAllocate( $im, 64, 128, 128 );

    $color[] = ImageColorAllocate( $im, 204, 102, 153 );

    $white = ImageColorAllocate( $im, 255, 255, 255 );

    $black = ImageColorAllocate( $im, 0, 0, 0 );

    $grey = ImageColorAllocate( $im, 215, 215, 215 );



    ImageFill( $im, 0, 0, $white );

    

    $degree = 0;

    for( $i = 0; $i < count( $data ); $i++ )

    {

        $startDegree = round( $degree );

        $degree += ( $data[ $i ] / $dataTotal ) * 360;

        $endDegree = round( $degree );

        

        $currentColor = $color[ $i % ( count( $color ) ) ];

        

        ImageArc( $im, $centerX, $centerY, $diameter, $diameter, $startDegree, $endDegree, $currentColor );

        

        list( $arcX, $arcY ) = circlePoint( $startDegree, $diameter );

        ImageLine( $im, $centerX, $centerY, floor( $centerX + $arcX ), floor( $centerY + $arcY ), $currentColor );

        

        list( $arcX, $arcY ) = circlePoint( $endDegree, $diameter );

        ImageLine( $im, $centerX, $centerY, ceil( $centerX + $arcX ), ceil( $centerY + $arcY ), $currentColor );

        

        $midPoint = round( ( ( $endDegree - $startDegree ) / 2 ) + $startDegree );

        list( $arcX, $arcY ) = circlePoint( $midPoint, $diameter / 1.5 );

        ImageFillToBorder( $im, floor( $centerX + $arcX ), floor( $centerY + $arcY ), $currentColor, $currentColor );

        ImageString( $im, 2, floor( $centerX + $arcX ), floor( $centerY + $arcY ), intval( round( $data[ $i ] / $dataTotal * 100 ) ) . "%", $black );

    }

    

    $labelX = $centerX + $diameter / 2 + 10;

    $labelY = $centerY - $diameter / 4;

    $titleX = $labelX - $diameter / 4;

    $titleY = $centerY - $diameter / 2;

    ImageString( $im, 3, $titleX + 1, $titleY + 1, $chartTitle, $grey );

    ImageString( $im, 3, $titleX, $titleY, $chartTitle, $black );

    ImageString( $im, 1, $labelX, $titleY + 14, date( "Y-m-d H:i:sa" ), $black );

    

    for( $i = 0; $i < count( $item ); $i++ )

    {

        $currentColor = $color[ $i % ( count( $color ) ) ];

        ImageRectangle( $im, $labelX, $labelY, $labelX + $labelWidth, $labelY + $labelWidth, $black );

        ImageFilledRectangle( $im, $labelX + 1, $labelY + 1, $labelX + $labelWidth, $labelY + $labelWidth, $currentColor );

        ImageString( $im, 2, $labelX + $labelWidth + 5, $labelY, $item[ $i ], $black );

        ImageString( $im, 2, $labelX + $labelWidth + 60, $labelY, $data[ $i ], $black );

        $labelY += $labelWidth + 2;

    }

    ImageString( $im, 3, $labelX, $labelY, "Total:", $black );

    ImageString( $im, 3, $labelX + $labelWidth + 60, $labelY, $dataTotal, $black );

    ImageString( $im, 2, $labelX, $labelY + 15, $logo, $black );

    Header( "Content-type: image/PNG" );

    ImagePNG( $im );

    ImageDestroy( $im );

?>

Anon · 04-01-2001, 07:06 PM

For output go to http://oberon.spaceports.com/~music4u/test1.png

Anon · 04-17-2001, 12:14 PM

Thankyou Alan! Your code for pie graph generation is great!
Only today i tested it, sorry for my later response.
Thanks tnx tnx again!

Anon · 05-02-2001, 03:10 PM

Sir Alan:

I´m trying to use your code pie graph but it generates the next error:

Fatal error: Call to undefined function: imagecreate() in /mnt/clientes/sancho/html/postobon/graficar.php on line 38

Can you help me ?

Best Regards.

Anon · 05-03-2001, 09:58 AM

This script should work perfectly if you install GD library.
Check out more about GD library la.
good luck!

Anon · 05-07-2001, 07:45 AM

Dear Alan:

Can you give the ways for installing GD library.

Thanks for your cooperation.

JL.

Anon · 05-07-2001, 01:40 PM

For instruction installing GD library on Linux( I assumed you using Linux )
please go to:
http://www.e-gineer.com/instructions/install-gd13-for-php-with-apache-on-linux.phtml

If you are not using Linux but Win e-mail me again.

good luck@!

Anon · 05-07-2001, 01:41 PM

For instruction installing GD library on Linux( I assumed you using Linux )
please go to:
http://www.e-gineer.com/instructions/install-gd13-for-php-with-apache-on-linux.phtml

If you are not using Linux but Win e-mail me again.

good luck@!

Anon · 02-20-2002, 07:24 PM

I'm using Windows, how can i do that?

Anon · 02-21-2002, 03:48 AM

Are you using windows? What's the problem?
I used that snippet on a windows php installation and i got no problem.
Anyway,i found this too: http://www.aditus.nu/jpgraph/index.php
Take a look, may be can help you.
Paolo Dina

Anon · 02-21-2002, 03:02 PM

Change your setting in 'php.ini'.

jonki · 06-11-2007, 01:57 PM

I love your 2D Pie Chart but I have having some trouble when I pass variables across from another page.

Basically I want to display many Pie Charts together on the same page and I display them like this;

PHP Code:


			
 echo '<IMG src="2d.php">';

Which works fine .... but if I do this;

PHP Code:


			
$data = array( 200, 43, 34, 232, 234, 23, 434, 43, 344 );

$item = array( "BMW", "MERCEDEZ", "VOLKSWAGEN", "OPEL", "FORD", "TOYOTA", "AUDI", "SEAT", "Otros" );



echo '<IMG src="2d.php?data=$data&item=$item">';

It doesnt work

Any Ideas?

Many thanks

***bradgrafelman*** · 06-11-2007, 06:53 PM

You can't simply output an array inside of a string. You'll either have to serialize() it, implode() it, or transfer it to the second PHP script by some other means (e.g. a session).

Dont forget that URI's are limited to a certain number of characters (255 or something?).

jonki · 06-11-2007, 07:27 PM

Thanks a lot for your help. I noticed the mistake you mentioned but I have tried imploding and exploding, I have even tried passing the variables individually but I just cant seem to get it to work.

Here is my latest version; if anyone can spot a silly mistake then I will be very grateful;

PHP Code:


			
 $d1="BMW";            $i1=540;

$d2="Mercedes";        $i2=340;

$d3="Toyota";        $i3=200;

$d4="Audi";            $i4=150;

$d5="Opel";            $i5=78;

$d6="SEAT";            $i6=50;

$d7="Ford";            $i7=50;

$d8="Jaguar";        $i8=45;

$d9="Skoda";        $i9=30;

$d10="Dacia";        $i10=30;

$d11="Ferrari";        $i11=20;

$d12="Otros";    $i12=100;

    





echo '<IMG src="2d.php?d1=.$d1.&d2=.$d2.&d3=.$d3.&d4=.$d4.&d5=.$d5.&d6=.$d6.&d7=.$d7.&d8=.$d8.&d9=.$d9.&d10=.$d10.&d11=.$d11.&12=.$d12.

                    &i1='.$i1.'&i2='.$i2.'&i3='.$i3.'&i4='.$i4.'&i5='.$i5.'&i6='.$i6.'&i7='.$i7.'&i8='.$i8.'&i9='.$i9.'&i10='.$i10.'&i11='.$i11.'&i12='.$i12.'">';

And the only difference from the script written above in 2c.php is;

PHP Code:


			


//$d1 = $_GET['d1']; $d2 = $_GET['d2']; $d3 = $_GET['d3']; $d4 = $_GET['d4']; $d5 = $_GET['d5']; $d6 = $_GET['d6']; $d7 = $_GET['d7']; $d8 = $_GET['d8']; $d9 = $_GET['d9']; $d10 = $_GET['d10']; $d11 = $_GET['d11']; $d12 = $_GET['d12'];

//$i1 =  $_GET['i1']; $i2 =  $_GET['i2']; $i3 =  $_GET['i3']; $i4 =  $_GET['i4']; $i5 =  $_GET['i5']; $i6 =  $_GET['i6']; $i7 =  $_GET['i7']; $i8 =  $_GET['i8']; $i9 =  $_GET['i9']; $i10 =  $_GET['i10']; $i11 =  $_GET['i11']; $i12 =  $_GET['i12']; 







//$data = array( '.$d1.', '.$d2.', '.$d3.', '.$d4.', '.$d5.', '.$d6.', '.$d7.', '.$d8.', '.$d9.' , '.$d10.' , '.$d11.' , '.$d12.' );

//$item = array( '.$i1.', '.$i2.', '.$i3.', '.$i4.', '.$i5.', '.$i6.', '.$i7.', '.$i8.', '.$i9.' , '.$i10.' , '.$i11.' , '.$i12.' );



$data = array( $d1, $d2, $d3, $d4, $d5, $d6, $d7, $d8, $d9 ,$d10 , $d11 , $d12 );

$item = array( $i1, $i2, $i3, $i4, $i5, $i6, $i7, $i8, $i9 , $i10 , $i11 , $i12 );

As you can see, I have tried many combinations, not all of which are shown here.

If anyone can help me out I would be very grateful

Thanks

***bradgrafelman*** · 06-11-2007, 07:31 PM

So what's an example of the URL that is outputted?