source: trunk/client/modules/Elezioni/grafici/jpgraph_scatter.php@ 388

Last change on this file since 388 was 284, checked in by roby, 6 years ago
File size: 7.8 KB
Line 
1<?php
2/*=======================================================================
3 // File: JPGRAPH_SCATTER.PHP
4 // Description: Scatter (and impuls) plot extension for JpGraph
5 // Created: 2001-02-11
6 // Ver: $Id: jpgraph_scatter.php 1397 2009-06-27 21:34:14Z ljp $
7 //
8 // Copyright (c) Asial Corporation. All rights reserved.
9 //========================================================================
10 */
11require_once ('jpgraph_plotmark.inc.php');
12
13//===================================================
14// CLASS FieldArrow
15// Description: Draw an arrow at (x,y) with angle a
16//===================================================
17class FieldArrow {
18 public $iColor='black';
19 public $iSize=10; // Length in pixels for arrow
20 public $iArrowSize = 2;
21 private $isizespec = array(
22 array(2,1),array(3,2),array(4,3),array(6,4),array(7,4),array(8,5),array(10,6),array(12,7),array(16,8),array(20,10)
23 );
24 function __construct() {
25 // Empty
26 }
27
28 function SetSize($aSize,$aArrowSize=2) {
29 $this->iSize = $aSize;
30 $this->iArrowSize = $aArrowSize;
31 }
32
33 function SetColor($aColor) {
34 $this->iColor = $aColor;
35 }
36
37 function Stroke($aImg,$x,$y,$a) {
38 // First rotate the center coordinates
39 list($x,$y) = $aImg->Rotate($x,$y);
40
41 $old_origin = $aImg->SetCenter($x,$y);
42 $old_a = $aImg->a;
43 $aImg->SetAngle(-$a+$old_a);
44
45 $dx = round($this->iSize/2);
46 $c = array($x-$dx,$y,$x+$dx,$y);
47 $x += $dx;
48
49 list($dx,$dy) = $this->isizespec[$this->iArrowSize];
50 $ca = array($x,$y,$x-$dx,$y-$dy,$x-$dx,$y+$dy,$x,$y);
51
52 $aImg->SetColor($this->iColor);
53 $aImg->Polygon($c);
54 $aImg->FilledPolygon($ca);
55
56 $aImg->SetCenter($old_origin[0],$old_origin[1]);
57 $aImg->SetAngle($old_a);
58 }
59}
60
61//===================================================
62// CLASS FieldPlot
63// Description: Render a field plot
64//===================================================
65class FieldPlot extends Plot {
66 public $arrow = '';
67 private $iAngles = array();
68 private $iCallback = '';
69
70 function __construct($datay,$datax,$angles) {
71 if( (count($datax) != count($datay)) )
72 JpGraphError::RaiseL(20001);//("Fieldplots must have equal number of X and Y points.");
73 if( (count($datax) != count($angles)) )
74 JpGraphError::RaiseL(20002);//("Fieldplots must have an angle specified for each X and Y points.");
75
76 $this->iAngles = $angles;
77
78 parent::__construct($datay,$datax);
79 $this->value->SetAlign('center','center');
80 $this->value->SetMargin(15);
81
82 $this->arrow = new FieldArrow();
83 }
84
85 function SetCallback($aFunc) {
86 $this->iCallback = $aFunc;
87 }
88
89 function Stroke($img,$xscale,$yscale) {
90
91 // Remeber base color and size
92 $bc = $this->arrow->iColor;
93 $bs = $this->arrow->iSize;
94 $bas = $this->arrow->iArrowSize;
95
96 for( $i=0; $i<$this->numpoints; ++$i ) {
97 // Skip null values
98 if( $this->coords[0][$i]==="" )
99 continue;
100
101 $f = $this->iCallback;
102 if( $f != "" ) {
103 list($cc,$cs,$cas) = call_user_func($f,$this->coords[1][$i],$this->coords[0][$i],$this->iAngles[$i]);
104 // Fall back on global data if the callback isn't set
105 if( $cc == "" ) $cc = $bc;
106 if( $cs == "" ) $cs = $bs;
107 if( $cas == "" ) $cas = $bas;
108 $this->arrow->SetColor($cc);
109 $this->arrow->SetSize($cs,$cas);
110 }
111
112 $xt = $xscale->Translate($this->coords[1][$i]);
113 $yt = $yscale->Translate($this->coords[0][$i]);
114
115 $this->arrow->Stroke($img,$xt,$yt,$this->iAngles[$i]);
116 $this->value->Stroke($img,$this->coords[0][$i],$xt,$yt);
117 }
118 }
119
120 // Framework function
121 function Legend($aGraph) {
122 if( $this->legend != "" ) {
123 $aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0,
124 $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
125 }
126 }
127}
128
129//===================================================
130// CLASS ScatterPlot
131// Description: Render X and Y plots
132//===================================================
133class ScatterPlot extends Plot {
134 public $mark,$link;
135 private $impuls = false;
136 //---------------
137 // CONSTRUCTOR
138 function __construct($datay,$datax=false) {
139 if( is_array($datax) && (count($datax) != count($datay)) ) {
140 JpGraphError::RaiseL(20003);//("Scatterplot must have equal number of X and Y points.");
141 }
142 parent::__construct($datay,$datax);
143 $this->mark = new PlotMark();
144 $this->mark->SetType(MARK_SQUARE);
145 $this->mark->SetColor($this->color);
146 $this->value->SetAlign('center','center');
147 $this->value->SetMargin(0);
148 $this->link = new LineProperty(1,'black','solid');
149 $this->link->iShow = false;
150 }
151
152 //---------------
153 // PUBLIC METHODS
154 function SetImpuls($f=true) {
155 $this->impuls = $f;
156 }
157
158 function SetStem($f=true) {
159 $this->impuls = $f;
160 }
161
162 // Combine the scatter plot points with a line
163 function SetLinkPoints($aFlag=true,$aColor="black",$aWeight=1,$aStyle='solid') {
164 $this->link->iShow = $aFlag;
165 $this->link->iColor = $aColor;
166 $this->link->iWeight = $aWeight;
167 $this->link->iStyle = $aStyle;
168 }
169
170 function Stroke($img,$xscale,$yscale) {
171
172 $ymin=$yscale->scale_abs[0];
173 if( $yscale->scale[0] < 0 )
174 $yzero=$yscale->Translate(0);
175 else
176 $yzero=$yscale->scale_abs[0];
177
178 $this->csimareas = '';
179 for( $i=0; $i<$this->numpoints; ++$i ) {
180
181 // Skip null values
182 if( $this->coords[0][$i]==='' || $this->coords[0][$i]==='-' || $this->coords[0][$i]==='x')
183 continue;
184
185 if( isset($this->coords[1]) )
186 $xt = $xscale->Translate($this->coords[1][$i]);
187 else
188 $xt = $xscale->Translate($i);
189 $yt = $yscale->Translate($this->coords[0][$i]);
190
191
192 if( $this->link->iShow && isset($yt_old) ) {
193 $img->SetColor($this->link->iColor);
194 $img->SetLineWeight($this->link->iWeight);
195 $old = $img->SetLineStyle($this->link->iStyle);
196 $img->StyleLine($xt_old,$yt_old,$xt,$yt);
197 $img->SetLineStyle($old);
198 }
199
200 if( $this->impuls ) {
201 $img->SetColor($this->color);
202 $img->SetLineWeight($this->weight);
203 $img->Line($xt,$yzero,$xt,$yt);
204 }
205
206 if( !empty($this->csimtargets[$i]) ) {
207 if( !empty($this->csimwintargets[$i]) ) {
208 $this->mark->SetCSIMTarget($this->csimtargets[$i],$this->csimwintargets[$i]);
209 }
210 else {
211 $this->mark->SetCSIMTarget($this->csimtargets[$i]);
212 }
213 $this->mark->SetCSIMAlt($this->csimalts[$i]);
214 }
215
216 if( isset($this->coords[1]) ) {
217 $this->mark->SetCSIMAltVal($this->coords[0][$i],$this->coords[1][$i]);
218 }
219 else {
220 $this->mark->SetCSIMAltVal($this->coords[0][$i],$i);
221 }
222
223 $this->mark->Stroke($img,$xt,$yt);
224
225 $this->csimareas .= $this->mark->GetCSIMAreas();
226 $this->value->Stroke($img,$this->coords[0][$i],$xt,$yt);
227
228 $xt_old = $xt;
229 $yt_old = $yt;
230 }
231 }
232
233 // Framework function
234 function Legend($aGraph) {
235 if( $this->legend != "" ) {
236 $aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0,
237 $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
238 }
239 }
240} // Class
241/* EOF */
242?>
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