Dear Bernhard, Thank you, but I didn't mean it. I'd like to use the package cRy made by James since I'm an R user!
Thanks, Keitaro 2011/2/7 Bernhard Rupp (Hofkristallrat a.D.) <hofkristall...@gmail.com>: > R is a well-documented statistics package. > http://www.r-project.org/ > > BR > > -----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, > > I'm very interested in your crystallographic R package. > Is it available to the public? > > Thanks in advance, > > Keitaro > > 2011/2/4 James Foadi <james_fo...@yahoo.co.uk>: >> If you fancy using R (and its endless ways of generating random >> deviates), then you could use part of the crystallographic package we >> are developing here (cRy). >> >> Then you would carry out the following in R: >> >>> source("cRy/all_load.R") >>> mtz <- >>>readMTZ("test.mtz") >>> # Load data from mtz file >>> newF <- >>>mtz$reflections$Fnew+rnorm(mean=0,sd=1,n=length(mtz$reflections$H)) # >>>Add gaussian deviates with mean 0 and standard dev 1 >>>mtz$reflections$Fnew <- newF # Replace new column >>>writeMTZ(mtz,"new_test.mtz") >>> # Write modified file with a different name >> >> >> If you are interested I can provide you with my R code for doing this. >> >> >> >> J >> >> Dr James Foadi PhD >> Membrane Protein Laboratory >> Diamond Light Source Ltd. >> Diamond House >> Harwell Science and Innovation Campus >> Didcot >> Oxfordshire >> OX11 0DE >> United Kingdom >> >> >> office email: james.fo...@diamond.ac.uk alternative email: >> j.fo...@imperial.ac.uk >> >> >> >> ----- Original Message ---- >> From: Vellieux Frederic <frederic.velli...@ibs.fr> >> 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 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 required. >> >> Before writing a computer program to do this, does anyone know if this >> can be done without writing any code. If it can then obviously I won't > write new code. >> >> Thanks, >> >> Fred. >> >> >> >> >> > >
