deon/phptsmadmin
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
This repository has been archived on 2024-04-08. You can view files and clone it, but cannot push or open issues or pull requests.
21b013e3ba
phptsmadmin/includes/jpgraph/docs/chunkhtml/ch20s04.html
Deon George 21b013e3ba Added JPGraph v3.5.0b1
2011-05-28 19:51:52 +10:00

197 lines
23 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Adding and positioning multiple odometers to a graph</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch20.html" title="Chapter 20. Odometer"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Adding and positioning multiple odometers to a graph</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 20. Odometer</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Adding and positioning multiple odometers to a graph"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2585733"></a>Adding and positioning multiple odometers to a graph</h2></div></div></div>
<p>The library supports unlimited number of odometers plots in a single graph. They can
either be positioned manually within the graph by specifying absolute coordinates for
the centers of the odometers or it can be done in a semi automatically way to avoid the
hassle of calculating exact pixels positions.</p>
<p>
</p><div class="tip" title="Tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tip</h3>
<p>Remember that there is a caption property of the odometer plot as well as the
main graph class and it is suitable to add a separate caption text to every
odometer to separate them.</p>
</div><p>
</p>
<p>As have been shown in the previous example adding several odometer to the same graph
is simply a matter of creating multiple instances of <code class="code">class Odometer</code> and
then adding them to the graph by calling the <code class="code">OdoGraph::Add()</code> method.</p>
<div class="sect2" title="Manual positioning"><div class="titlepage"><div><div><h3 class="title"><a name="id2585775"></a>Manual positioning </h3></div></div></div>
<p>To manually position the odometer plot the following method is used</p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">OdoPlot::SetPos($aX, $aY)</code></p>
<p>Specifies the position of the odometer plot in either absolute
coordinates (&gt;1) or as fraction of the width/height when specified as
fractions (in range (0.0 to 1.0)</p>
</li></ul></div><p>
</p>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>There is a minor difference when using odometer captions and specifying
the y coordinate using fractions in that the y-coordinate and the radius
will automatically adjust to the height of the caption size. This guarantees
that the total image (odometer+caption) will always occupy the same total
height in the image regardless of the size of the caption. </p>
</div><p>
</p>
<p>The top left corner of the graph is (0,0)</p>
<p>The following example manually positions to odometer plots in the graph, one at
the top right corner and one in the bottom left corner.</p>
<p>
</p><div class="figure"><a name="fig.odotutex17"></a><p class="title"><b>Figure 20.19. Manually specifying the position of odometer plots <code class="uri"><a class="uri" href="example_src/odotutex17.html" target="_top">(<code class="filename">odotutex17.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/odotutex17.png" alt="Manually specifying the position of odometer plots (odotutex17.php)"></span> </div></div><p><br class="figure-break">
</p>
</div>
<div class="sect2" title="Using layout classes"><div class="titlepage"><div><div><h3 class="title"><a name="id2585835"></a>Using layout classes</h3></div></div></div>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>Those familiar with Java AWT classes will recognize this concept</p>
</div><p>
</p>
<p>Normally we don't want to have to calculate the absolute x and y coordinates when
positioning odometers. A much better concept would be to just tell the library to
position three odometer horizontally or perhaps vertically without us having to
figure out the exact coordinates our self.</p>
<p>This is where layout classes come in handy.</p>
<p>There are two types of layout horizontal and vertical. To specify that two
odometers should be positioned side by side (horizontal) first a new layout object
is created and then the odometer plots are added as object within the layout class.
Later on when the object are put to the image the horizontal layout class will take
all its objects and spread them out evenly along a horizontal line. The
corresponding applies to the vertical layout class with the obvious change in
direction.</p>
<p>The layout object are added to the graph in exactly the same was as odometers, by
calling the <code class="code">OdoGraph::Add()</code> method. </p>
<p>The following line would create a horizontal line of odometer plots</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code">
</span><span class="hl-var">$row1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo1</span><span class="hl-code">, </span><span class="hl-var">$odo2</span><span class="hl-code">, </span><span class="hl-var">$odo3</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$row1</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div><p>
</p>
<p>If we instead wanted the odometer stacked on top of each other the lines above
would have to be changed to</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code">
</span><span class="hl-var">$row1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutVert</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo1</span><span class="hl-code">, </span><span class="hl-var">$odo2</span><span class="hl-code">, </span><span class="hl-var">$odo3</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$row1</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div><p>
</p>
<p>There is no limit to how many object can be added to a layout class.</p>
<p>If it was only possible to add odometers in the creation of layout classes it
would be of limited use. The real power of layout classes is that they can be
combined. </p>
<p>So for example if we wanted two odometers in the top row and three in the bottom
row we can think of this as first creating two horizontal layout object which are
then in there turn layout out vertically.</p>
<p>The following code shows how this could be done</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
6
7
8
9
10
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code">
</span><span class="hl-var">$row1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo1</span><span class="hl-code">, </span><span class="hl-var">$odo2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$row2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo3</span><span class="hl-code">, </span><span class="hl-var">$odo4</span><span class="hl-code">, </span><span class="hl-var">$odo5</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Combine the two rows in a column</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$col1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutVert</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$row1</span><span class="hl-code">, </span><span class="hl-var">$row2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> The image will now have 5 odometers!</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$col1</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div><p>
</p>
<p>The following code shows a full example on how this is done</p>
<p>
</p><div class="example"><a name="example.odotutex18"></a><p class="title"><b>Example 20.5. Using layout classes for automatic positioning (<code class="filename">odotutex18.php</code>) </b></p><div class="example-contents"> <div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code">
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_odo.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create a new odometer graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">OdoGraph</span><span class="hl-brackets">(</span><span class="hl-number">500</span><span class="hl-code">,</span><span class="hl-number">180</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Now we need to create an odometer to add to the graph.</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$i</span><span class="hl-code">=</span><span class="hl-number">0</span><span class="hl-code">; </span><span class="hl-var">$i</span><span class="hl-code"> &lt; </span><span class="hl-number">5</span><span class="hl-code">; ++</span><span class="hl-var">$i</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Odometer</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetColor</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">lightgray:1.9</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">needle</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-number">10</span><span class="hl-code">+</span><span class="hl-var">$i</span><span class="hl-code">*</span><span class="hl-number">17</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">needle</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetShadow</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">if</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$i</span><span class="hl-code"> &lt; </span><span class="hl-number">2</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-var">$fsize</span><span class="hl-code"> = </span><span class="hl-number">10</span><span class="hl-code">;
</span><span class="hl-reserved">else</span><span class="hl-code">
</span><span class="hl-var">$fsize</span><span class="hl-code"> = </span><span class="hl-number">8</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">scale</span><span class="hl-code">-&gt;</span><span class="hl-identifier">label</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_ARIAL</span><span class="hl-code">,</span><span class="hl-identifier">FS_NORMAL</span><span class="hl-code">,</span><span class="hl-var">$fsize</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">AddIndication</span><span class="hl-brackets">(</span><span class="hl-number">92</span><span class="hl-code">,</span><span class="hl-number">100</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">red</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">AddIndication</span><span class="hl-brackets">(</span><span class="hl-number">80</span><span class="hl-code">,</span><span class="hl-number">92</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">orange</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">AddIndication</span><span class="hl-brackets">(</span><span class="hl-number">60</span><span class="hl-code">,</span><span class="hl-number">80</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">yellow</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> Create the layout</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$row1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-code">,</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$row2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-number">2</span><span class="hl-brackets">]</span><span class="hl-code">,</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-number">3</span><span class="hl-brackets">]</span><span class="hl-code">,</span><span class="hl-var">$odo</span><span class="hl-brackets">[</span><span class="hl-number">4</span><span class="hl-brackets">]</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$col1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutVert</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$row1</span><span class="hl-code">,</span><span class="hl-var">$row2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Add the odometer to the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$col1</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> ... and finally stroke and stream the image back to the browser</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div></div></div><p><br class="example-break"> </p><div class="figure"><a name="fig.odotutex18"></a><p class="title"><b>Figure 20.20. Using layout classes for automatic positioning <code class="uri"><a class="uri" href="example_src/odotutex18.html" target="_top">(<code class="filename">odotutex18.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/odotutex18.png" alt="Using layout classes for automatic positioning (odotutex18.php)"></span> </div></div><p><br class="figure-break">
</p>
</div>
</div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"><a accesskey="u" href="ch20.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
Reference in New Issue View Git Blame Copy Permalink