Dear Vera,

On Wed, Jul 13, 2022 at 10:13:28AM +0200, Vera Pfanzagl wrote:
> You write that I should make sure REFMAC reads in the test-set from
> the staraniso.mtz and does not replace it with a new one.  This
> would only be the case if it generates a new test set when I
> initially import the reflection file, right? How can I check that
> retrospectively with my history-riddled file?

The REFMAC program/binary itself will obviously read an MTZ file
exactly as-is when run via

  refmac5 xyzin your.pdb hklin your.mtz xyzout refmac.pdb hklout refmac.mtz <<e
  ... some commands ...
  e

But "running REFMAC" can mean very different things when this is done
via one of the available interfaces: there might be various
preparation steps involved before the actual REFMAC binary is called.

Best thing: run e.g.

  mtzdmp input.mtz  -n 100 > tmp.1
  mtzdmp output.mtz -n 100 > tmp.2

and compare those two text files (same number of reflections reported,
same completeness for test-set flags etc).

> PS: the links in [2] are not accurate anymore, the interface of
> CCP4i2 export alone already looks completely different and does not
> seem to want external processing files.

Probably something for wwPDB/CCP4/REFMAC to look into and to provide
an update.

Cheers

Clemens

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