khanat-opennel-code/code/ryzom/tools/server/admin/jpgraph/jpgraph_utils.inc
2011-05-30 21:37:36 +03:00

251 lines
No EOL
8 KiB
PHP

<?php
/*=======================================================================
// File: JPGRAPH_UTILS.INC
// Description: Collection of non-essential "nice to have" utilities
// Created: 2005-11-20
// Author: Johan Persson (johanp@aditus.nu)
// Ver: $Id: jpgraph_utils.inc,v 1.1 2006/07/07 13:37:14 powles Exp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/
//===================================================
// CLASS FuncGenerator
// Description: Utility class to help generate data for function plots.
// The class supports both parametric and regular functions.
//===================================================
class FuncGenerator {
var $iFunc='',$iXFunc='',$iMin,$iMax,$iStepSize;
function FuncGenerator($aFunc,$aXFunc='') {
$this->iFunc = $aFunc;
$this->iXFunc = $aXFunc;
}
function E($aXMin,$aXMax,$aSteps=50) {
$this->iMin = $aXMin;
$this->iMax = $aXMax;
$this->iStepSize = ($aXMax-$aXMin)/$aSteps;
if( $this->iXFunc != '' )
$t = 'for($i='.$aXMin.'; $i<='.$aXMax.'; $i += '.$this->iStepSize.') {$ya[]='.$this->iFunc.';$xa[]='.$this->iXFunc.';}';
elseif( $this->iFunc != '' )
$t = 'for($x='.$aXMin.'; $x<='.$aXMax.'; $x += '.$this->iStepSize.') {$ya[]='.$this->iFunc.';$xa[]=$x;} $x='.$aXMax.';$ya[]='.$this->iFunc.';$xa[]=$x;';
else
JpGraphError::RaiseL(24001);//('FuncGenerator : No function specified. ');
@eval($t);
// If there is an error in the function specifcation this is the only
// way we can discover that.
if( empty($xa) || empty($ya) )
JpGraphError::RaiseL(24002);//('FuncGenerator : Syntax error in function specification ');
return array($xa,$ya);
}
}
//=============================================================================
// CLASS SymChar
// Description: Code values for some commonly used characters that
// normally isn't available directly on the keyboard, for example
// mathematical and greek symbols.
//=============================================================================
class SymChar {
function Get($aSymb,$aCapital=FALSE) {
static $iSymbols = array(
/* Greek */
array('alpha','03B1','0391'),
array('beta','03B2','0392'),
array('gamma','03B3','0393'),
array('delta','03B4','0394'),
array('epsilon','03B5','0395'),
array('zeta','03B6','0396'),
array('ny','03B7','0397'),
array('eta','03B8','0398'),
array('theta','03B8','0398'),
array('iota','03B9','0399'),
array('kappa','03BA','039A'),
array('lambda','03BB','039B'),
array('mu','03BC','039C'),
array('nu','03BD','039D'),
array('xi','03BE','039E'),
array('omicron','03BF','039F'),
array('pi','03C0','03A0'),
array('rho','03C1','03A1'),
array('sigma','03C3','03A3'),
array('tau','03C4','03A4'),
array('upsilon','03C5','03A5'),
array('phi','03C6','03A6'),
array('chi','03C7','03A7'),
array('psi','03C8','03A8'),
array('omega','03C9','03A9'),
/* Money */
array('euro','20AC'),
array('yen','00A5'),
array('pound','20A4'),
/* Math */
array('approx','2248'),
array('neq','2260'),
array('not','2310'),
array('def','2261'),
array('inf','221E'),
array('sqrt','221A'),
array('int','222B'),
/* Misc */
array('copy','00A9'),
array('para','00A7'));
$n = count($iSymbols);
$i=0;
$found = false;
$aSymb = strtolower($aSymb);
while( $i < $n && !$found ) {
$found = $aSymb === $iSymbols[$i++][0];
}
if( $found ) {
$ca = $iSymbols[--$i];
if( $aCapital && count($ca)==3 )
$s = $ca[2];
else
$s = $ca[1];
return sprintf('&#%04d;',hexdec($s));
}
else
return '';
}
}
//=============================================================================
// CLASS DateScaleUtils
// Description: Help to create a manual date scale
//=============================================================================
DEFINE('DSUTILS_MONTH1',1); // Major and minor ticks on a monthly basis
class DateScaleUtils {
function GetTicks($aData,$aType=1) {
//
// Find out the range of the data in order to get the limits for the loops
// that creates the position for the labels. This code is generic and can be
// used for any ranges of the data.
//
$n = count($aData);
$startmonth = date('n',$aData[0]);
$startday = date('j',$aData[0]);
$startyear = date('Y',$aData[0]);
$endmonth = date('n',$aData[$n-1]);
$endyear = date('Y',$aData[$n-1]);
$endday = date('j',$aData[$n-1]);
//
// Now create the positions for all the ticks. In this example we
// put a tick at the start of every month and also on the very
// first and last X-position.
//
$tickPositions = array();
$minTickPositions = array();
$i=0;$j=0;
// Uncomment this line to put a label at the very left data pos
// $tickPositions[$i++] = $datax[0];
$m = $startmonth;
$y = $startyear;
// Skip the first month label if it is before the startdate
if( $startday == 1 ) {
$tickPositions[$i++] = mktime(0,0,0,$m,1,$y);
}
if( $startday < 15 ) {
$minTickPositions[$j++] = mktime(0,0,0,$m,15,$y);
}
++$m;
// Loop through all the years included in the scale
for($y=$startyear; $y <= $endyear; ++$y ) {
// Loop through all the months. There are three cases to consider:
// 1. We are in the first year and must start with the startmonth
// 2. We are in the end year and we must stop at last month of the scale
// 3. A year in between where we run through all the 12 months
$stopmonth = $y == $endyear ? $endmonth : 12;
while( $m <= $stopmonth ) {
switch( $aType ) {
case 1:
// Set minor tick at the middle of the month
if( $m <= $stopmonth ) {
if( !($y==$endyear && $m==$stopmonth && $endday < 15) )
$minTickPositions[$j++] = mktime(0,0,0,$m,15,$y);
}
// Major at month
// Get timestamp of first hour of first day in each month
$tickPositions[$i++] = mktime(0,0,0,$m,1,$y);
break;
}
++$m;
}
$m=1;
}
// For the case where all dates are within the same month
// we want to make sure we have at least two ticks on the scale
// since the scale want work properly otherwise
if($startmonth == $endmonth && $startyear == $endyear && $aType==1 ) {
$tickPositions[$i++] = mktime(0 ,0 ,0, $startmonth + 1, 1, $startyear);
}
// Uncomment this line to put a label at the very right data pos
// $tickPositions[$i] = $datax[$n-1];
return array($tickPositions,$minTickPositions);
}
}
//=============================================================================
// Class ReadFileData
//=============================================================================
Class ReadFileData {
//----------------------------------------------------------------------------
// Desciption:
// Read numeric data from a file.
// Each value should be separated by either a new line or by a specified
// separator character (default is ',').
// Before returning the data each value is converted to a proper float
// value. The routine is robust in the sense that non numeric data in the
// file will be discarded.
//
// Returns:
// The number of data values read on success, FALSE on failure
//----------------------------------------------------------------------------
function FromCSV($aFile,&$aData,$aSepChar=',',$aMaxLineLength=1024) {
$rh = fopen($aFile,'r');
if( $rh === false )
return false;
$tmp = array();
$lineofdata = fgetcsv($rh, 1000, ',');
while ( $lineofdata !== FALSE) {
$tmp = array_merge($tmp,$lineofdata);
$lineofdata = fgetcsv($rh, $aMaxLineLength, $aSepChar);
}
fclose($rh);
// Now make sure that all data is numeric. By default
// all data is read as strings
$n = count($tmp);
$aData = array();
$cnt=0;
for($i=0; $i < $n; ++$i) {
if( $tmp[$i] !== "" ) {
$aData[$cnt++] = floatval($tmp[$i]);
}
}
return $cnt;
}
}
?>