This message means that the starting electron density map is completely
flat, which makes any density modification impossible. There are several
possible reasons for this:
1. No FOM specified on LABIN.
2. FOM specified, but all FOMs are equal to zero.
3. All F's equal to zero.
4. Input map coefficients (FDM) specified and equal to zero.
5. Some sort of filter applied (either resolution of Free-flag) which is
removing all of the reflections from use.
If you send your full log file and an mtzdump of your mtz file, than I
can be more specific.
Kevin
kumar wrote:
Dear CCP4’ers, I’m trying to run DM for after Refmac on an MR solution
but it crashes. I do have the FOM’s listed in my log file. I get a
similar error when I use the mtz file from Phaser’s SAD + MR. I’d
appreciate any help. Thanks! Kumar
*After Refmac …………………………..
*
HISTLIB opened:
Number of histograms = 18
Number of entries per histogram = 100
RESL 10.0 8.0 7.0 6.0 5.0 4.5 4.0 3.6 3.3 3.0 2.8 2.6 2.4
2.2 2.0 1.8 1.6 1.5
<a name="solmskdm"><h3>Initial Solvent Mask</h3></a>
dm: (WFO) No density in map! Check input FOM present and nonzero
Times: User: 0.2s System: 0.0s Elapsed: 0:01
</pre>
</html>
***************************************************************************
* Information from CCP4Interface script
***************************************************************************
The program run with command: dm HKLIN
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_refmac1.mtz"
HKLOUT
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_dm2.mtz"
SOLOUT
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_dm1.msk"
has failed with error message
dm: (WFO) No density in map! Check input FOM present and nonzero
***************************************************************************
#CCP4I TERMINATION STATUS 0 " dm: (WFO) No density in map! Check input
FOM present and nonzero"
***********************************************
*After Phaser (SAD+MR)……………..
*
<a name="solmskdm"><h3>Initial Solvent Mask</h3></a>
dm: (WFO) No density in map! Check input FOM present and nonzero
Times: User: 0.2s System: 0.0s Elapsed: 0:00
</pre>
</html>
***************************************************************************
* Information from CCP4Interface script
***************************************************************************
The program run with command: dm HKLIN
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_9.mtz"
HKLOUT
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_9_dm1.mtz"
SOLOUT
"/home/elias/kumar/7_20/K15/reprocess/ccp4/cns/round2/round3/round4/round4_9_dm1.msk"
has failed with error message
dm: (WFO) No density in map! Check input FOM present and nonzero
***************************************************************************
#CCP4I TERMINATION STATUS 0 " dm: (WFO) No density in map! Check input
FOM present and nonzero"
************************************
