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47 lines
4.8 KiB
HTML
47 lines
4.8 KiB
HTML
<html>
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<head><link rel="stylesheet" type="text/css" href="help.css" /></head>
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<body>
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<h1 class='module'>Point Cloud Reclassifier / Subset Extractor</h1>
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<div class='author'>Volker Wichmann (c) 2009, LASERDATA GmbH</div>
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<div class='description'>The module can be used to either reclassify a Point Cloud attribute or to extract a subset of a Point Cloud based on the values of an attribute.<br/>
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<br/>
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The module provides three different options:<br/>
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(a) reclassification of (or extraction based on) single values,<br/>
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(b) reclassification of (or extraction based on) a range of values and<br/>
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(c) reclassification of (or extraction based on) value ranges specified in a lookup table.<br/>
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<br/>
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Each of these three options provides it's own parameters. The 'new value' parameters are irrelevant in case a subset is extracted.<br/>
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<br/>
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In addition to these settings, two special cases ('NoData values' and 'other values' not included in the parameter setup) are supported:<br/>
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In mode (a) and (b) the 'NoData option' is evaluated before the method settings, in mode (c) the option is evaluated only if the NoData value ins't included in the lookup table.<br/>
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The 'other values' option is always evaluated after checking the method settings.<br/>
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<br/>
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</div>
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<h2>Parameters</h2>
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<dl class='parameters'>
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<dt>Point Cloud <div class='type'>Input Point Cloud</div></dt><dd>Point Cloud to reclassify/extract <div class='constraints'></div></dd>
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<dt>Attribute <div class='type'>Table field</div></dt><dd>Attribute to process. <div class='constraints'></div></dd>
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<dt>Result <div class='type'>Output Point Cloud</div></dt><dd>Reclassified or extracted Point Cloud. <div class='constraints'></div></dd>
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<dt>Mode of operation <div class='type'>Choice</div></dt><dd>Choose whether to reclassify a Point Cloud or to extract a subset from a Point Cloud. <div class='constraints'>Available choices: Reclassify, Extract Subset</div></dd>
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<dt>Method <div class='type'>Choice</div></dt><dd>Select the desired method: 1. a single value or a range defined by a single value is reclassified, 2. a range of values is reclassified, 3. the lookup table is used to reclassify the grid. <div class='constraints'>Available choices: single, range, simple table, user supplied table</div></dd>
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<dt>old value <div class='type'>Floating point</div></dt><dd>Value to reclassify. <div class='constraints'></div></dd>
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<dt>new value <div class='type'>Floating point</div></dt><dd>New value. <div class='constraints'></div></dd>
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<dt>operator <div class='type'>Choice</div></dt><dd>Select the desired operator (<;.;=; >;.); it is possible to define a range above or below the old value. <div class='constraints'>Available choices: =, <, <=, >=, ></div></dd>
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<dt>minimum value <div class='type'>Floating point</div></dt><dd>Minimum value of the range to be reclassified. <div class='constraints'></div></dd>
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<dt>maximum value <div class='type'>Floating point</div></dt><dd>Maximum value of the range to be reclassified. <div class='constraints'></div></dd>
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<dt>new value <div class='type'>Floating point</div></dt><dd>new value <div class='constraints'></div></dd>
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<dt>operator <div class='type'>Choice</div></dt><dd>Select operator: eg. min < value < max. <div class='constraints'>Available choices: <=, <</div></dd>
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<dt>Lookup Table <div class='type'>Static table</div></dt><dd>Lookup table used in method "table" <div class='constraints'></div></dd>
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<dt>operator <div class='type'>Choice</div></dt><dd>Select the desired operator (min < value < max; min . value < max; min .value . max; min < value . max). <div class='constraints'>Available choices: min <= value < max, min <= value <= max, min < value <= max, min < value < max</div></dd>
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<dt>Lookup Table <div class='type'>Input Table</div></dt><dd>Lookup table used in method "user supplied table" <div class='constraints'></div></dd>
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<dt>minimum value <div class='type'>Table field</div></dt><dd> <div class='constraints'></div></dd>
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<dt>maximum value <div class='type'>Table field</div></dt><dd> <div class='constraints'></div></dd>
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<dt>new value <div class='type'>Table field</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Special cases <div class='type'>Node</div></dt><dd>Parameter settings for No-Data and all other values. <div class='constraints'></div></dd>
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<dt>no data values <div class='type'>Boolean</div></dt><dd>Use this option to reclassify No-Data values independently of the method settings. <div class='constraints'></div></dd>
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<dt>new value <div class='type'>Floating point</div></dt><dd>new value <div class='constraints'></div></dd>
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<dt>other values <div class='type'>Boolean</div></dt><dd>Use this option to reclassify all other values that are not specified in the options above. <div class='constraints'></div></dd>
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<dt>new value <div class='type'>Floating point</div></dt><dd>new value <div class='constraints'></div></dd>
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</dl>
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</body></html>
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