Well - I guess you need to check the input mtz file. do mtzdmo this.mtz and check that the columns you have selected are present and have non-zero values. You need a FOM there. Eleanor
On 14 Jun 2012, at 12:58, Appu kumar wrote: > Hello Dear all > I am trying running dm (density modification) > programe for density modification, but it giving error complaining about > density map. It says, dm: (WFO) No density in map! Check input FOM present > and nonzero. > > Please suggest me how to overcome this problem. I am density modification > with SAD data , but dm giving error. Your help will be much appreciated. > Thank you > Appu