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	<id>https://www.heurekaslu.se/w/index.php?action=history&amp;feed=atom&amp;title=Age_Calibration_Failed</id>
	<title>Age Calibration Failed - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://www.heurekaslu.se/w/index.php?action=history&amp;feed=atom&amp;title=Age_Calibration_Failed"/>
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	<updated>2026-05-05T21:20:05Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.35.13</generator>
	<entry>
		<id>https://www.heurekaslu.se/w/index.php?title=Age_Calibration_Failed&amp;diff=296&amp;oldid=prev</id>
		<title>Fkl at 12:02, 4 August 2008</title>
		<link rel="alternate" type="text/html" href="https://www.heurekaslu.se/w/index.php?title=Age_Calibration_Failed&amp;diff=296&amp;oldid=prev"/>
		<updated>2008-08-04T12:02:11Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 12:02, 4 August 2008&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l12&quot; &gt;Line 12:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 12:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Correct the initial age or the maturity class of the reference unit in the database (you need to do this directly in the database or with another application)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Correct the initial age or the maturity class of the reference unit in the database (you need to do this directly in the database or with another application)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;or&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;''&lt;/ins&gt;or&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;''&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Try again with the tree age calibration function disabled&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Try again with the tree age calibration function disabled&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Fkl</name></author>
	</entry>
	<entry>
		<id>https://www.heurekaslu.se/w/index.php?title=Age_Calibration_Failed&amp;diff=293&amp;oldid=prev</id>
		<title>Fkl: New page: Category:Error Messages '''Cause'''  The age calibration function failed because one or more trees got a negative age. This can happen if there is a large discrepancy between the estim...</title>
		<link rel="alternate" type="text/html" href="https://www.heurekaslu.se/w/index.php?title=Age_Calibration_Failed&amp;diff=293&amp;oldid=prev"/>
		<updated>2008-08-04T12:00:32Z</updated>

		<summary type="html">&lt;p&gt;New page: &lt;a href=&quot;/wiki/Category:Error_Messages&quot; title=&quot;Category:Error Messages&quot;&gt;Category:Error Messages&lt;/a&gt; &amp;#039;&amp;#039;&amp;#039;Cause&amp;#039;&amp;#039;&amp;#039;  The age calibration function failed because one or more trees got a negative age. This can happen if there is a large discrepancy between the estim...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Error Messages]]&lt;br /&gt;
'''Cause'''&lt;br /&gt;
&lt;br /&gt;
The age calibration function failed because one or more trees got a negative age. This can happen if there is a large discrepancy between the estimated age of the inventoried trees and the assigned initial age for the reference unit.&lt;br /&gt;
&lt;br /&gt;
The age calibration function adjusts the tree age assigned by the chosen age function so that the mean age of the trees matches the initial age defined for the reference unit.&lt;br /&gt;
&lt;br /&gt;
Age calibration is not performed if an initial age not is set, or if maturity class is thicket (A2) or plant forest (B1).&lt;br /&gt;
&lt;br /&gt;
'''Resolution'''&lt;br /&gt;
&lt;br /&gt;
Correct the initial age or the maturity class of the reference unit in the database (you need to do this directly in the database or with another application)&lt;br /&gt;
&lt;br /&gt;
or&lt;br /&gt;
&lt;br /&gt;
Try again with the tree age calibration function disabled&lt;/div&gt;</summary>
		<author><name>Fkl</name></author>
	</entry>
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