251 lines
No EOL
8 KiB
PHP
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;
|
|
}
|
|
}
|
|
|
|
?>
|