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<title>(IUCr) CIF Definition save__diffrn_detector_element.reference_center_units</title>
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<p class="title">DRAFT DICTIONARY</p>
<p class="title"><font class="smalltitle"></font>CBF/imgCIF Extensions Dictionary</p>
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<p class="title">Draft version 1.5 for comment</p>
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<h5>Image dictionary (imgCIF) version 1.5.4</h5>
<h1>_diffrn_detector_element.reference_center_units</h1><b>Name:</b><br /><tt class="cifdefinition">'_diffrn_detector_element.reference_center_units'</tt>
<p><b>Definition:</b></p><pre class="cifdefinition">
The value of <a href="Idiffrn_detector_element.reference_center_units.html" class="itemlink">_diffrn_detector_element.reference_center_units</a>
specifies the units in which the values of
'<a href="Idiffrn_detector_element.reference_center_fast.html" class="itemlink">_diffrn_detector_element.reference_center_fast</a>' and
'<a href="Idiffrn_detector_element.reference_center_slow.html" class="itemlink">_diffrn_detector_element.reference_center_slow</a>'
are presented. The default is 'mm' for millimetres. The
alternatives are 'pixels' and 'bins'. In all cases the
center distances are measured from the center of the
first pixel, i.e. in a 2x2 binning, the measuring origin
is offset from the centers of the bins by one half pixel
towards the first pixel.
If 'bins' is specified, the data in
'<a href="Iarray_intensities.pixel_fast_bin_size.html" class="itemlink">_array_intensities.pixel_fast_bin_size</a>',
'<a href="Iarray_intensities.pixel_slow_bin_size.html" class="itemlink">_array_intensities.pixel_slow_bin_size</a>', and
'<a href="Iarray_intensities.pixel_binning_method.html" class="itemlink">_array_intensities.pixel_binning_method</a>'
is used to define the binning scheme.
</pre>
<p><b>Type:</b> code</p>
<p class="pack"><b>Mandatory item:</b> no</p>
<br /><b>The data value must be one of the following:</b><br /><br />
<table width="100%"><tr class="cifexample"><td width="50%">
<br /><tt>mm</tt>
</td><td width="50%"> millimetres
</td></tr></table>
<table width="100%"><tr class="cifexample"><td width="50%">
<br /><tt>pixels</tt>
</td><td width="50%"> detector pixels
</td></tr></table>
<table width="100%"><tr class="cifexample"><td width="50%">
<br /><tt>bins</tt>
</td><td width="50%"> detector bins
</td></tr></table>
<p class="pack"><b>Category:</b> <a href="Cdiffrn_detector_element.html" class="catlink">diffrn_detector_element</a></p>
<h4 align=left>
HTML version of draft dictionary created by modified version of makedicthtml by B. McMahon
from modified version of imgCIF dcitionary 1.3.2 which is subject to the following copyright:
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