Good to know! 
Thanks for the follow up. 

From: "Tingjie Guo" <i...@tingjieguo.com> 
To: "Sebastien Bihorel" <sebastien.biho...@cognigencorp.com> 
Cc: nmusers@globomaxnm.com 
Sent: Wednesday, June 5, 2019 6:08:44 AM 
Subject: Re: Random number generation 



Hi Sebastien, 



It worked perfectly for me in $ERROR, but I tested it on NONMEM 7.4.3. Maybe nm 
version matters. 



Warm regards, 

Tingjie 




From: Sebastien Bihorel <sebastien.biho...@cognigencorp.com> 
Date: Monday, 3 June 2017 at 22:54 
To: Tingjie Guo <i...@tingjieguo.com> 
Cc: "nmusers@globomaxnm.com" <nmusers@globomaxnm.com> 
Subject: Re: Random number generation 








Thanks Tingjie for your suggestion 





Unfortunately, as is, the suggested code is rejected by NONMEM 7.3 if used in 
$ERROR. Some additional setup calls might be required. 





An (admittedly heavy-handed) alternative that actually works is to create and 
import a fortran routine (see NONMEM help topic about FUNCA, or VECTRA). 





runif.f90: 


FUNCTION FUNCA(X,X1,X2) 
USE SIZES, ONLY: DPSIZE 
REAL(KIND=DPSIZE) :: X,X1,X2,FUNCA 
FUNCB = RAND() 
RETURN 
END 



Control stream: 


... 


$SUBROUTINES ADVAN_ TRANS_ OTHER=runif.f90 


... 


$ERROR 


VECTRA(1) = 0 
VECTRA(2) = 0 
VECTRA(3) = 0 

RND = FUNCA(VECTRA) 


... 






From: "Tingjie Guo" <i...@tingjieguo.com> 
To: "Sebastien Bihorel" <sebastien.biho...@cognigencorp.com>, 
nmusers@globomaxnm.com 
Sent: Monday, June 3, 2019 12:58:56 PM 
Subject: Re: Random number generation 





Hi Sebastien, 





As far as I know, you could write verbatim code to generate random numbers 
during estimation. E.g: 





$PK|$DES|$ERROR 


RAN = any value ; initialization 


"RAN = RAND(0) ; start verbatim code 





A random number between 0 and 1 from uniform distribution will be assigned to 
RAN. This function is called for each record of your input data. I believe it's 
also possible to call it more/fewer times through checking ICALL. 





Warm regards, 


Tingjie 















From: owner-nmus...@globomaxnm.com <owner-nmus...@globomaxnm.com> on behalf of 
Sebastien Bihorel <sebastien.biho...@cognigencorp.com> 
Sent: Thursday, May 30, 2019 12:34 
To: nmusers@globomaxnm.com 
Subject: [NMusers] Random number generation 






Hi, 

Is it possible for NONMEM to generate a random number during an estimation run? 

Thank you 

Sebastien Bihorel 




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