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[ccp4bb]: detwin

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I try to run detwin. I have estimated the twin fraction about 0.24.
I intoduce the value (0.237) and the log file announces that the
estimated twin fraction is 0.0.

At the end of the job, it seems that a twin fraction of 0.48 has been
applied ????

Help !

Here is a part of my log file


 Data line--- TITLE detwin crystal ESRF (pas12)
  key:TITL
 Data line--- SIGMACUT 6.0
  key:SIGM
 Data line--- OPERATOR -h,-k,h+l
  key:OPER
 Data line--- TWIN_FRACTION 0.237
  key:TWIN
</pre>
<hr>
<B><FONT COLOR="#FF0000"><!--SUMMARY_BEGIN-->

<a name="twinDETWIN"><h3>Twinning Relationship</h3></a>
<pre>

 Twinning relationship relates reflection with indices h,k,l to :
-h,-k,h+l
 In matrix form

    -1    0    0
     0   -1    0
     1    0    1


<!--SUMMARY_END--></FONT></B>
<B><FONT COLOR="#FF0000"><!--SUMMARY_BEGIN-->
 Estimated twin fraction 0.000
...
...
...
...
...
Output file written for  twinning fraction 0.480
Number of reflections written to output file 155327
Number omitted because the twin mate same as original   2619
Number omitted because the twin mate was not observed   4370
Twinning tests for all fractions: see log graphs

<!--SUMMARY_END--></FONT></B>
</pre>
<hr>                            
                                         
-------------------------------------------------
Prof. Jean-Paul DECLERCQ
Université Catholique de Louvain
Unite CSTR, Laboratoire de cristallographie
Place Louis Pasteur, 1 bte 4
B-1348 Louvain-la-Neuve, Belgium

E-mail : declercq@chim.ucl.ac.be
Tel : 32 10 472924         Fax : 32 10 472707