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If you want to remove the indices which are not observed, you can use
sftools (this has been suggested to me on this board, sorry I do not
remember by whom).

sftools << eof
read yourfile.mtz
select only column IMEAN present
write temp1.mtz
END
eof

mv temp1.mtz yourfile.mtz

This way mtzdmp reports the resolution of your data, not of the
indices, and I find this a clean solution.

Cheers,
Tim

On 11/05/2012 10:53 AM, Antony Oliver wrote:
> Am I worrying about something unnecessarily?
> 
> I have several protein-drug datasets, all in the same spacegroup,
> but wildly varying resolutions. I wish to use the same reflections
> for calculating R-free in all cases.
> 
> Using xia2 with a reference dataset for both indexing and R-free
> seems to work fine, apart from the fact that the resulting mtz
> file, now contains R-free labels for reflections that have no
> observations… i.e. taken from the higher resolution "reference
> dataset"; see output below.
> 
> I get essentially the same results using CAD to copy the R-free
> column between mtzfiles….
> 
> Is this actually a problem - or is it just my innate sense of
> tidiness that wants the resolution values to be the same?
> 
> 
> Many thanks,
> 
> Antony.
> 
> Col Sort    Min    Max    Num      %     Mean     Mean   Resolution
> Type Column num order               Missing complete          abs.
> Low    High       label
> 
> 1 ASC      0      36      0  100.00     14.2     14.2  57.66   2.02
> H  H 2 NONE     0      36      0  100.00     14.6     14.6  57.66
> 2.02   H  K 3 NONE     0      38      0  100.00     14.8     14.8
> 57.66   2.02   H  L 4 NONE    0.0    19.0   132   99.18     9.52
> 9.52  57.40   2.02   I  FreeR_flag 5 NONE  -30.6 10855.5 11647
> 28.03   202.72   203.43  57.66   3.17   J  IMEAN 6 NONE    1.5
> 356.4 11647   28.03    11.52    11.52  57.66   3.17   Q  SIGIMEAN 7
> NONE    7.8  1040.0 11647   28.03   109.05   109.05  57.66   3.17
> F  F 8 NONE    1.4    23.8 11647   28.03     6.59     6.59  57.66
> 3.17   Q  SIGF
> 
> 
> No. of reflections used in FILE STATISTICS    16183
> 
> 
> 
> 
> 
> --- Dr Antony W Oliver Senior Research Fellow CR-UK DNA Repair
> Enzymes Group Genome Damage and Stability Centre Science Park Road 
> University of Sussex Falmer, Brighton, BN1 9RQ
> 
> email:
> antony.oli...@sussex.ac.uk<mailto:antony.oli...@sussex.ac.uk> tel
> (office): +44 (0)1273 678349 tel (lab): +44 (0)1273 677512
> 
> 

- -- 
- --
Dr Tim Gruene
Institut fuer anorganische Chemie
Tammannstr. 4
D-37077 Goettingen

GPG Key ID = A46BEE1A

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