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</style><hr><a name="_C_LINEARSCALE"><div style="background-color:yellow;font-family:courier new;"></a>CLASS <b>LinearScale</b></div>
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<i>(Defined in: jpgraph.php : 4429)</i><table border=1><tr><td> <a href="LinearScale.html" style="font-family:arial;font-weight:bold;color:darkblue;">LinearScale</a> </td></tr><tr><td valign=top> <a href="LinearScale.html#_LINEARSCALE_SETAUTOMAX">SetAutoMax()</a> <br>
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<a href="LinearScale.html#_LINEARSCALE_SETAUTOMIN">SetAutoMin()</a> <br>
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<a href="LinearScale.html#_LINEARSCALE_SETAUTOTICKS">SetAutoTicks()</a> <br>
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<a href="LinearScale.html#_LINEARSCALE_SETGRACE">SetGrace()</a> <br>
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</td></tr></table> <p><div style="font-weight:bold;font-family:arial;font-size:100%;">Class usage and Overview</div>This class is the main scale class and implements the linear and integer scale for the axis. <p>
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<div style="font-weight:bold;font-family:arial;font-size:85%;">See also related classes:</div><a href="Axis.html">Axis</a> and <a href="LogScale.html">LogScale</a> <p> <hr><span style="font-family:arial;font-size:120%;font-weight:bold;">Class Methods</span><hr><p>
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<p> <p> <span style='font-size:110%;'><a name="_LINEARSCALE_SETAUTOMAX"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
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function SetAutoMax($aMax)</font>
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</b></div></a></span>
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<span style='font-family:arial;font-size:90%;'><i>Fix the maximum value for a scale</i></span><p>
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<table cellspacing=0 style='border:black solid 1pt;' width=100%>
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<tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
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<tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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$aMax</font>
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</td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'> </td><td>Maximum value</td></tr>
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</table>
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<div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>Fix a maximum value for a scale eventhough autoscaling is used for the min value. <br>
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<div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
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// For a negative scale we might want to make sure it
<br />// always start at the top from 0
<br />$graph->y2scale->SetAutoMax(0);</font>
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</span><br>
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<p>
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<p> <p> <span style='font-size:110%;'><a name="_LINEARSCALE_SETAUTOMIN"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
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function SetAutoMin($aMin)</font>
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</b></div></a></span>
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<span style='font-family:arial;font-size:90%;'><i>Set the minimum data value when the autoscaling is used.</i></span><p>
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<table cellspacing=0 style='border:black solid 1pt;' width=100%>
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<tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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$aMin</font>
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</td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'> </td><td>Min value</td></tr>
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<div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>Set the minimum data value when the autoscaling is used. Usefull if you want a fix minimum (like 0) but automtic maximum value. <br>
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<div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
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</span><br>
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<p>
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<p> <p> <span style='font-size:110%;'><a name="_LINEARSCALE_SETAUTOTICKS"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
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function SetAutoTicks($aFlag)</font>
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</b></div></a></span>
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<span style='font-family:arial;font-size:90%;'><i>Determine ticks automtically with manual scale</i></span><p>
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<tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
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$aFlag</font>
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</td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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true</font>
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</table>
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<div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>This is used in conjunction when a manual scale is specified. In normall cases one has also to specify major and minor tick steps.
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<p>
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$graph->SetScale("textlin",0,70);<br>
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$graph->yscale->ticks->Set(10,2);
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However by instead using
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<p>
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$graph->SetScale("textlin",0,70);<br>
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$graph->yscale->SetAutoTicks();
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<p>
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The major and minor ticks are determined automatically.
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<p>
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The thing you have to be aware of is that the specified min and max values might be slightly modified so that the end/beginning of the scale will fall on a major tick step.
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<p>
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By default the auto ticks are off.
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<br>
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// Manually set Y-scale min=30, max=90
<br />$graph->SetScale('textlin',30,90);
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<br />// Let JpGraph figure out suitable tick marks
<br />$graph->yscale->SetAutoTicks();
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<br /></font>
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</span><br>
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<p>
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<p> <p> <span style='font-size:110%;'><a name="_LINEARSCALE_SETGRACE"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
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function SetGrace($aGraceTop,$aGraceBottom)</font>
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</b></div></a></span>
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<span style='font-family:arial;font-size:90%;'><i>// Specify scale "grace" value (top and bottom)</i></span><p>
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<table cellspacing=0 style='border:black solid 1pt;' width=100%>
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<tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
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<tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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$aGraceTop</font>
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</td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'> </td><td>Top grace value</td></tr>
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<tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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</td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
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0</font>
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</td><td>Bottom grace value</td></tr>
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<p>
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By specifyin the grace you get added space. The value specified is interpretated as extra percentage of the total scale range.
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For example if the scale range (without grace) is (0,100) and you add 10% top grace (with SetGrace(10)) the modified scale will be (0,110) and if you use a 100% top grace the scale will be (0,200) and so on. <br>
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<div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
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$graph->xaxis->scale->SetGrace(50);</font>
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<p> <hr> <p>
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