Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-06 Thread Keitaro Yamashita
R > > -Original Message- > From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of > Keitaro Yamashita > Sent: Sunday, February 06, 2011 2:10 AM > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] adding gaussian noise to an mtz data column > > Dear James, >

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-06 Thread Bernhard Rupp (Hofkristallrat a.D.)
United Kingdom > > > office email: james.fo...@diamond.ac.uk alternative email: > j.fo...@imperial.ac.uk > > > > - Original Message > From: Vellieux Frederic > To: CCP4BB@JISCMAIL.AC.UK > Sent: Fri, 4 February, 2011 12:40:35 > Subject: [ccp4bb] adding gau

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-06 Thread Keitaro Yamashita
gdom > > > office email: james.fo...@diamond.ac.uk > alternative email: j.fo...@imperial.ac.uk > > > > - Original Message > From: Vellieux Frederic > To: CCP4BB@JISCMAIL.AC.UK > Sent: Fri, 4 February, 2011 12:40:35 > Subject: [ccp4bb] adding gaussian noise to

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-04 Thread Ian Clifton
On 04/02/11 12:40, Vellieux Frederic wrote: > Before re-inventing the wheel... > > Is there anywhere some software (freely available software, I mean) that > can add some Gaussian noise to data. The data is currently stored in a > data column in an mtz (not phase data, but "amplitudes", "sigma

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-04 Thread Vellieux Frederic
Thanks Ian, I think this is good enough for what I have in mind. So I did not have to reinvent the wheel after all... Fred. Ian Tickle wrote: Hi Fred Doesn't sftools do this - from 'man sftools': CALC F COL Fsimulated = COL Fcalc ran_g 10 * + Create a column with label Fsimula

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-04 Thread Ian Tickle
Hi Fred Doesn't sftools do this - from 'man sftools': CALC F COL Fsimulated = COL Fcalc ran_g 10 * + Create a column with label Fsimulated which contains the value of column Fcalc plus 10 times a random number from a Gaussian distribution with average = 0 and vari

Re: [ccp4bb] adding gaussian noise to an mtz data column

2011-02-04 Thread James Foadi
l: j.fo...@imperial.ac.uk - Original Message From: Vellieux Frederic To: CCP4BB@JISCMAIL.AC.UK Sent: Fri, 4 February, 2011 12:40:35 Subject: [ccp4bb] adding gaussian noise to an mtz data column Before re-inventing the wheel... Is there anywhere some software (freely available software, I

[ccp4bb] adding gaussian noise to an mtz data column

2011-02-04 Thread Vellieux Frederic
Before re-inventing the wheel... Is there anywhere some software (freely available software, I mean) that can add some Gaussian noise to data. The data is currently stored in a data column in an mtz (not phase data, but "amplitudes", "sigma values"...) but can be exported to another format if