From owner-chemistry@ccl.net Mon Mar 12 01:24:00 2012 From: "Alagarasi A ezhilchemis===gmail.com" To: CCL Subject: CCL: Kinetic diameter - calculation Message-Id: <-46460-120312011646-21455-KIYAiFSYX5rENmgoOce9jA]^[server.ccl.net> X-Original-From: "Alagarasi A" Date: Mon, 12 Mar 2012 01:16:45 -0400 Sent to CCL by: "Alagarasi A" [ezhilchemis###gmail.com] Dear All, I need to calculate the kinetic diameter of a molecule like 4-chlorophenol. Is it possible through computational calculation? If possible, could you please tell me how to find it. From owner-chemistry@ccl.net Mon Mar 12 02:00:00 2012 From: "Likas L Dan likas87() gmail.com" To: CCL Subject: CCL: Spin contamination with CCSD, S^2 value Message-Id: <-46461-120312015939-2224-GnEPs5laP+5HJKFl1IeilA]-[server.ccl.net> X-Original-From: "Likas L Dan" Date: Mon, 12 Mar 2012 01:59:37 -0400 Sent to CCL by: "Likas L Dan" [likas87%%gmail.com] Dear all, does anyone know, how is S^2 value in the case of CCSD calculations designated in output? I cannot find it. I found UHF, UMPn, and PMPn S^2 values, but I need it in the case of CCSD. Thanks in advance. Greetings From owner-chemistry@ccl.net Mon Mar 12 07:15:00 2012 From: "ABHISHEK SHAHI shahi.abhishek1984[-]gmail.com" To: CCL Subject: CCL: Pka CAlculation Message-Id: <-46462-120312065935-25322-NTUNpc5PjXoJlHlL7cdmaA^server.ccl.net> X-Original-From: ABHISHEK SHAHI Content-Type: multipart/alternative; boundary=20cf3005dc22eabc7d04bb09a256 Date: Mon, 12 Mar 2012 16:29:09 +0530 MIME-Version: 1.0 Sent to CCL by: ABHISHEK SHAHI [shahi.abhishek1984|a|gmail.com] --20cf3005dc22eabc7d04bb09a256 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Dear All, I have a molecule(10-12 atoms) having two acidic protons at different positions. I want to compare the acidity quantitatively in gas phase only. How to calculate pka value for these two protons separately for comparison purpose with the help of Gausian program. I am considering an article "Avoiding gas-phase calculations in theoretical pKa predictions" Theor Chem Acc (2011) 130:1=9613. Any relative article/suggestions will be highly appreciable. Thanking you. *ABHISHEK SHAHI* *Research Scholar Inorganic and Physical Chemistry Indian Institute Of Science Bangalore-12* India --20cf3005dc22eabc7d04bb09a256 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Dear All,


I have a molecule(10-12 atoms) having two acidic prot= ons at different positions. I want to compare the acidity quantitatively in= gas phase only. How to calculate pka value for these two protons separatel= y for comparison purpose with the help of Gausian program. I am considering= an article "Avoiding gas-phase calculations in theoretical pKa predic= tions" Theor Chem Acc (2011) 130:1=9613.=A0 Any relative article/sugge= stions will be highly appreciable. Thanking you.


=A0ABHISHEK SHAHI

Research Scholar
Inorga= nic and Physical Chemistry
Indian Institute Of Science
Bangal= ore-12

India
--20cf3005dc22eabc7d04bb09a256-- From owner-chemistry@ccl.net Mon Mar 12 08:15:00 2012 From: "Dillen, Jan jlmd/./sun.ac.za JLMD/./sun.ac.za" To: CCL Subject: CCL:G: Ring pseudorotation Message-Id: <-46463-120312021117-14513-CdhhrkCwzeqZgrFqLyiwUQ+*+server.ccl.net> X-Original-From: "Dillen, Jan " Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_CE2E1D9CFE136845B87AC0670BBF5ECF2EA58BB8AESTBEVS05stbsu_" Date: Mon, 12 Mar 2012 08:11:52 +0200 MIME-Version: 1.0 Sent to CCL by: "Dillen, Jan [jlmd[a]sun.ac.za]" --_000_CE2E1D9CFE136845B87AC0670BBF5ECF2EA58BB8AESTBEVS05stbsu_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hallo Alcides Unfortunately, there is no "auto" way, and magic is an illusion, at least s= o I am told. I would either generate starting conformations using Cremer and Pople's for= mula for the deviation from the mean ring plane, or the empirical formula f= or the torsion angles by Geise and Altona. After that, you are at the mercy= of the Gaussian minimiser. However, I have found the latter to be very efficient in going to transitio= n states. If you are interested in energy profiles of the pseudorotation, d= o IRCs once you have the energy maxima. Your energy surface will probably b= e very flat, so Gaussian may (will) have troubles with the (automatic) IRCs= . You propably will have to distort the transition state in the direction o= f the proper eigenvector and do a downhill IRC, and even that is not guaran= teed to work. May the force be with you. Jan ________________________________ > From: owner-chemistry+jlmd=3D=3Dsun.ac.za]^[ccl.net [mailto:owner-chemistry+j= lmd=3D=3Dsun.ac.za]^[ccl.net] On Behalf Of Alcides Simao alsimao^^^gmail.com Sent: 08 March 2012 13:49 To: Dillen, Jan Subject: CCL:G: Ring pseudorotation Hello all! I'm trying to study a pseudorotation of a substituted pyrrolidine ring usin= g GAUSSIAN 03. Although literature exists on the theme, I haven't come acro= ss any input example of it,so I'm trying to compute it in a way that I disl= ike particulary, which is to set a plane made of four atoms, and set one of= the atoms off-plane, which is quite unrealistic. I would ask if anyone cou= ld kindly tell me what is your way of computing pseudorotation, and if you = happen to have an 'automagic' way of doing so, if you would be so kind as t= o share it. Best, Alcides ________________________________ E-pos vrywaringsklousule Hierdie e-pos mag vertroulike inligting bevat en mag regtens geprivilegeerd= wees en is slegs bedoel vir die persoon aan wie dit geadresseer is. Indien= u nie die bedoelde ontvanger is nie, word u hiermee in kennis gestel dat u= hierdie dokument geensins mag gebruik, versprei of kopieer nie. Stel ook a= sseblief die sender onmiddellik per telefoon in kennis en vee die e-pos uit= . Die Universiteit aanvaar nie aanspreeklikheid vir enige skade, verlies of= uitgawe wat voortspruit uit hierdie e-pos en/of die oopmaak van enige l?er= s aangeheg by hierdie e-pos nie. E-mail disclaimer This e-mail may contain confidential information and may be legally privile= ged and is intended only for the person to whom it is addressed. If you are= not the intended recipient, you are notified that you may not use, distrib= ute or copy this document in any manner whatsoever. Kindly also notify the = sender immediately by telephone, and delete the e-mail. The University does= not accept liability for any damage, loss or expense arising from this e-m= ail and/or accessing any files attached to this e-mail. --_000_CE2E1D9CFE136845B87AC0670BBF5ECF2EA58BB8AESTBEVS05stbsu_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Hallo Alcides
 
Unfortunately, there is no "= auto" way, and magic is an illusion, at least so I am told.
 
I would either generate starting = conformations using Cremer and Pople's formula for the deviation from the m= ean ring plane, or the empirical formula for the torsion angles by Geise and Altona. After that, you are at the mercy o= f the Gaussian minimiser.
 
However, I have found the latter = to be very efficient in going to transition states. If you are interested i= n energy profiles of the pseudorotation, do IRCs once you have the energy maxima. Your energy surface will probably be= very flat, so Gaussian may (will) have troubles with the (automatic) IRCs.= You propably will have to distort the transition state in the di= rection of the proper eigenvector and do a downhill IRC, and even that is not guaranteed to work.
 
May the force be with you.=
 
Jan


From: owner-chemistry+jlmd=3D= =3Dsun.ac.za]^[ccl.net [mailto:owner-chemistry+jlmd=3D=3Dsun.ac.za]^[ccl.ne= t] On Behalf Of Alcides Simao alsimao^^^gmail.com
Sent: 08 March 2012 13:49
To: Dillen, Jan <jlmd]^[sun.ac.za>
Subject: CCL:G: Ring pseudorotation

Hello all!

I'm trying to study a pseudorotation of a substituted pyrrolidine ring= using GAUSSIAN 03. Although literature exists on the theme, I haven't come= across any input example of it,so I'm trying to compute it in a way that I= dislike particulary, which is to set a plane made of four atoms, and set one of the atoms off-plane, which = is quite unrealistic. I would ask if anyone could kindly tell me what is yo= ur way of computing pseudorotation, and if you happen to have an 'automagic= ' way of doing so, if you would be so kind as to share it.

Best,

Alcides


E-pos vrywaringsklousule

Hierdie e-pos mag vertroulike inligting bevat en mag regtens geprivilegeerd= wees en is slegs bedoel vir die persoon aan wie dit geadresseer is. Indien= u nie die bedoelde ontvanger is nie, word u hiermee in kennis gestel dat u= hierdie dokument geensins mag gebruik, versprei of kopieer nie. Stel ook asseblief die sender onmiddellik per tel= efoon in kennis en vee die e-pos uit. Die Universiteit aanvaar nie aanspree= klikheid vir enige skade, verlies of uitgawe wat voortspruit uit hierdie e-= pos en/of die oopmaak van enige lêers aangeheg by hierdie e-pos nie.

E-mail disclaimer

This e-mail may contain confidential information and may be legally privile= ged and is intended only for the person to whom it is addressed. If you are= not the intended recipient, you are notified that you may not use, distrib= ute or copy this document in any manner whatsoever. Kindly also notify the sender immediately by telephone,= and delete the e-mail. The University does not accept liability for any da= mage, loss or expense arising from this e-mail and/or accessing any files a= ttached to this e-mail.
--_000_CE2E1D9CFE136845B87AC0670BBF5ECF2EA58BB8AESTBEVS05stbsu_-- From owner-chemistry@ccl.net Mon Mar 12 12:03:00 2012 From: "Laura Falivene lfalivene-x-hotmail.it" To: CCL Subject: CCL: RADII Message-Id: <-46464-120312115437-5579-ktrLbxt9f69WBQUGOB137w+/-server.ccl.net> X-Original-From: Laura Falivene Content-Type: multipart/alternative; boundary="_0b85ad4a-34e4-40b2-8ee0-34ea7755d245_" Date: Mon, 12 Mar 2012 16:54:26 +0100 MIME-Version: 1.0 Sent to CCL by: Laura Falivene [lfalivene++hotmail.it] --_0b85ad4a-34e4-40b2-8ee0-34ea7755d245_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have to calculate the solvation energy with gaussia03.I don't want to use= defaults solute radii=2C but i want to set them.Which keywords i have to p= ut in the input ans where? Thanks = --_0b85ad4a-34e4-40b2-8ee0-34ea7755d245_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I have to calculate the solvation energy with gaussia03.I don't want to use defaults solute radii=2C but i want to set them.
Which keywords i have to put in the input ans where?

<= /div>
Thanks
= --_0b85ad4a-34e4-40b2-8ee0-34ea7755d245_-- From owner-chemistry@ccl.net Mon Mar 12 16:01:00 2012 From: "Soren Eustis soreneustis,,gmail.com" To: CCL Subject: CCL:G: RADII Message-Id: <-46465-120312155924-19522-2shA/bRsWCgR6UiiMBhDUg]~[server.ccl.net> X-Original-From: Soren Eustis Content-type: multipart/alternative; boundary="B_3414430754_137326" Date: Mon, 12 Mar 2012 20:59:06 +0100 Mime-version: 1.0 Sent to CCL by: Soren Eustis [soreneustis%%gmail.com] > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3414430754_137326 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit http://www.gaussian.com/g_tech/g_ur/k_scrf.htm > From: "Laura Falivene lfalivene-x-hotmail.it" Reply-To: Ccl Date: Mon, 12 Mar 2012 16:54:26 +0100 To: Soren Eustis Subject: CCL: RADII > I have to calculate the solvation energy with gaussia03. > I don't want to use defaults solute radii, but i want to set them. > Which keywords i have to put in the input ans where? > > Thanks > --B_3414430754_137326 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable

From: "= Laura Falivene lfalivene-x-hotmail.it" <owner-chemistry:_:ccl.net>
Re= ply-To: Ccl <chemistry:_:ccl.net= >
Date: Mon, 12 Mar 2012 16= :54:26 +0100
To: Soren Eustis <= soreneustis:_:gmail.com>
Subject: CCL: RADII

I have to calculate the solvation energy with gau= ssia03.
I don't want to use defaults solute radii, but i want to set the= m.
Which keywords i have to put in the input ans where?
=
Thanks
--B_3414430754_137326-- From owner-chemistry@ccl.net Mon Mar 12 20:40:00 2012 From: "carlos simmerling carlos.simmerling]=[gmail.com" To: CCL Subject: CCL: April 3 deadline for application for ACS computational chemistry awar Message-Id: <-46466-120312130328-31443-AYDE92id9l2YFn1ioaKo2Q++server.ccl.net> X-Original-From: "carlos simmerling" Date: Mon, 12 Mar 2012 13:03:27 -0400 Sent to CCL by: "carlos simmerling" [carlos.simmerling*o*gmail.com] Applications are open for 3 types of awards from the ACS Division of Computers in Chemistry, to be awarded at the Fall 2012 national meeting in Philadelphia. The deadline is 5pm EDT Tuesday, April 3, 2012. 1) CCG Research Excellence award (graduate students) 2) HP Outstanding Junior Faculty Award (tenure-track Assistant Professors) 3) Peter Kollman Graduate Award in High Performance Computing CCG Graduate student award CCG Research Excellence student travel award stipends are available for the Fall 2012 Philadelphia ACS National Meeting. The CCG Excellence Awards have been created to stimulate graduate student participation in ACS COMP Division activities (symposia and poster sessions) at ACS National Meetings. Those eligible for a CCG Excellence Award are graduate students in good standing who present work within the COMP program, either in oral or poster format. Winners receive $1,150 to offset their travel expenses, as well as a copy of CCG's MOE (Molecular Operating Environment) software with a one-year license. They are also honored during a ceremony at the COMP Division Poster Session. Up to 5 awardees will be chosen on the basis of the quality and significance of the research to be presented, as well as the strength of the supporting letter and other materials. All graduate students of the Americas (North, South or Central) are encouraged to submit applications. Awards will be given only to those individuals making presentations, not co-authors. There is a limit of one CCG award application per research lab (PI). Previous winners are not eligible. To apply for an award for the ACS National Meeting in Philadelphia, PA Aug 19-23, 2012, a title and extended abstract of the work (no more than 2 pages), a two page CV, a personal statement (no more than 1 page) and a letter of support from the research advisor should be sent as a SINGLE pdf or text file to carlos.simmerling _._ gmail.com. Use the subject ACS CCG AWARD APPLICATION. You must include your last name at the beginning of the file name. Letters of support can be sent separately from the other materials but must still arrive by the deadline. The application deadline is 5pm EDT on Tuesday, April 3. Applicants will receive email confirmation of receipt of materials. If you do not receive confirmation by 1pm on April 5, please contact the organizer immediately by email (see below). In addition, you must submit your normal poster abstract to the "Chemical Computing Group Excellence Award" symposium on the ACS PACS system prior to the PACS deadline. Note that you MUST APPLY TWICE: email your application, and submit an abstract to PACS. Both must be submitted before their respective deadlines. Do not submit your PACS abstract to the standard poster session- it must be submitted for the CCG session or your application will not be considered. More information on awards offered by the ACS COMP division can be found on the web site at http://www.acscomp.org/Awards/index.html Carlos Simmerling Chair, ACS COMP Division Awards Committee Professor, Department of Chemistry Stony Brook University Stony Brook, NY 11794-3400 631-632-1336 carlos.simmerling _._ gmail.com HP Junior Faculty Award The ACS COMP HP Outstanding Junior Faculty Award program provides $1,000 to up to four outstanding tenure-track junior faculty members to present their work in COMP symposia at ACS National Meetings. The Awards are designed to assist new faculty members in gaining visibility within the COMP community. Award certificates and $1,000 prizes will be presented at the COMP Poster session. While special consideration will be given to Assistant Professors presenting work in the area of algorithm and methods development, applications for Outstanding Junior Faculty Awards are invited from all current tenure-track junior/untenured faculty (or equivalent positions in other institution types) who are members of ACS and the ACS Division of Computers in Chemistry. Postdoctoral researchers in transition to faculty appointments may also be considered. Selection criteria will include the novelty and importance of the work to be presented, CV of the applicant, as well as the level of Departmental support as indicated by the applicant's department Chair or Chair designee. To apply for an award for the ACS National Meeting in Philadelphia, PA Aug 19-23, 2012, a title and extended abstract of the work (no more than 2 pages), a complete CV (including ACS member number) and the letter of departmental support should be sent as a SINGLE pdf or text file to carlos.simmerling _._ gmail.com. Use the subject ACS HP AWARD APPLICATION. The departmental support letter can be sent separately if desired but must arrive by the deadline. You must include your last name at the start of the file name. The application deadline is 5pm EDT on Tuesday, April 3. Applicants will receive email confirmation of receipt of materials. If you do not receive confirmation by 1pm on April 5, please contact the organizer immediately by email. In addition, you must submit your normal poster abstract to the "Outstanding Junior Faculty Award" symposium on the ACS PACS system prior to the PACS deadline. Note that you MUST APPLY TWICE: email your application, and submit an abstract to PACS. Both must be submitted before their respective deadlines. Do not submit your PACS abstract to the standard poster session- it must be submitted for the HP session or your application will not be considered. Note that the award application is for the poster session. If you want to also give an oral presentation, you must submit a separate abstract to PACS for an oral presentation in a relevant session, in addition to the poster abstract in the award section (note that acceptance into the oral sessions is not guaranteed). Use a somewhat different title for the talk and poster. More information on awards offered by the ACS COMP division can be found on the web site at http://www.acscomp.org/Awards/index.html Carlos Simmerling Chair, ACS COMP Division Awards Committee Professor, Department of Chemistry Stony Brook University Stony Brook, NY 11794-3400 631-632-1336 carlos.simmerling _._ gmail.com High Perfomance Computing Peter Kollman Graduate Award in High Performance Computing to be awarded at the Fall 2012 Philadelphia ACS National Meeting. The ACS Peter Kollman Graduate Award in High Performance Computing has been created to provide supercomputer resources to outstanding students in the early stages of their graduate career, particularly for projects that need high performance computing resources for their chemistry-related project. Those eligible for the award are graduate students in good standing who are carrying out research in the broadly defined area of computational chemistry. Winners (or their adviser, if necessary) will be the Principal Investigator of a new account on the kraken Cray XT5 supercomputer at the National Institute of Computational Sciences (NICS), with an allocation of computing time to support the project. For information about kraken, see http://www.nics.tennessee.edu/computing-resources/kraken. Allocations will be determined based on the requested amount and consideration of resource availability. Up to 2 awardees will be chosen on the basis of: the significance of the project plan, the potential impact on the project of obtaining additional supercomputer resources, the qualifications of the student, and the strength of the supporting letter and other materials. Projects with modest computational needs that can be performed on individual machines or small clusters are not likely to be competitive. Application requirements include a title and extended abstract of the work (no more than 1 page), a two page CV, a brief letter of support from the research advisor, and a 1-2 page detailed computational plan indicating: computational resources already available for the project, the types of calculations to be performed, experience of the applicant with high performance computing, availability of software, justification of number and length of runs, parallel scaling data, and an estimate of the total time needed. Submit the application to carlos.simmerling _._ gmail.com as a SINGLE pdf or text file, and include your last name at the start of the file name. Use the subject ACS Kollman AWARD APPLICATION. There is a limit of one Kollman Award application per research lab (PI). Previous winners are not eligible. The application deadline is 5pm EDT on Tuesday, April 3. Applicants will receive email confirmation of receipt of materials. If you do not receive confirmation by 1pm on April 5, please contact the organizer immediately by email. Winners are encouraged but not required to present their work within the COMP program at the meeting, either in oral or poster format. If you want to present your work in an oral or poster presentation, you must also submit your abstract using the ACS PACS system, prior to the PACS deadline. Application for the supercomputing award does not constitute an application for a presentation. More information on awards offered by the ACS COMP division can be found on the web site at http://www.acscomp.org/Awards/index.html Carlos Simmerling Chair, ACS COMP Division Awards Committee Professor, Department of Chemistry Stony Brook University Stony Brook, NY 11794-3400 631-632-1336 carlos.simmerling _._ gmail.com From owner-chemistry@ccl.net Mon Mar 12 21:15:00 2012 From: "Joseph Katigbak jkatigba/./stevens.edu" To: CCL Subject: CCL: CASSCF does not produce spin densities Message-Id: <-46467-120312133738-21223-GgQGGE73fv3xAgOALoDHjA[*]server.ccl.net> X-Original-From: "Joseph Katigbak" Date: Mon, 12 Mar 2012 13:37:28 -0400 Sent to CCL by: "Joseph Katigbak" [jkatigba{:}stevens.edu] Hello, I am trying to determine the hyperfine coupling constants of some nitrosyl compounds using a high level Multiconfigurational/Multireference method like CASSCF. After running a CAS calculation using ROHF molecular orbitals as guesses, I got energy convergence for my compounds. However i noticed that the spin densities weren't being printed out (I was looking specifically for the Isotropic Fermi contact coupling). I have been told that CASSCF implements a restricted SCF colution and therefore does not generate a spin density. However I know from the literature that there are several papers on iron nitrosyl systems that use CASSCF and have spin densities. Is there any way for me to get the spin densities/Fermi contact coupling term? or am i just doing it wrong? Thank you very much :D -J. Katigbak From owner-chemistry@ccl.net Mon Mar 12 21:50:00 2012 From: "Kira A Armacost kza0004#%#auburn.edu" To: CCL Subject: CCL: PCA using JMP from Amber .dat files Message-Id: <-46468-120312153256-31733-pH/YGJAQbWXcFxQLiDZ8qQ###server.ccl.net> X-Original-From: "Kira A Armacost" Date: Mon, 12 Mar 2012 15:32:54 -0400 Sent to CCL by: "Kira A Armacost" [kza0004=auburn.edu] I'm trying to perform PCA using ptraj in Amber Tools from Amber 11. I've been able to get a .dat file with the eigenvectors and eigenvalues. I am wondering if these .dat files can be uploaded into JMP for further use with PCA? I'm able to upload them, but am running into an error with jmp because there is no headline for each column from the .dat file. Thank you! From owner-chemistry@ccl.net Mon Mar 12 22:25:01 2012 From: "Hans De Winter hans * silicos-it.com" To: CCL Subject: CCL:G: Open source tools from Silicos-it Message-Id: <-46469-120312165025-32188-dJ8a2gwrjCrNKZf9eB1NGQ(_)server.ccl.net> X-Original-From: "Hans De Winter" Date: Mon, 12 Mar 2012 16:50:23 -0400 Sent to CCL by: "Hans De Winter" [hans{:}silicos-it.com] Dear, Silicos-it is pleased to announce its new website (www. silicos-it.com) from which 5 open source packages (LGPL license) can be downloaded: - Filter-it is a program for filtering molecules with unwanted properties out of a set of molecules. The program comes with a number of pre-programmed molecular properties that can be used for filtering. - Strip-it is a tool to extract molecular scaffolds according predefined rules. - Align-it is a pharmacophore-based tool to align small molecules. The tool is based on the concept of modeling pharmacophoric features by Gaussian 3D volumes instead of the more common point or sphere representations. The smooth nature of these continuous functions has a beneficent effect on the optimisation problem introduced during alignment. - Shape-it is a shape-based alignment tool by representing molecules as a set of atomic Gaussians. The software is based on the method described by Grant and Pickup (J. Phys. Chem. 1995, 99, 3503). - Som-it has been developed with the purpose to analyse R-generated SOM maps derived from extreme large datasets. The current package comprises a single tool for the projection and analysis of self-organising maps that were generated using R. The first four tools are build on top of Open Babel, while Som-it is a tool to be used in combination with R. With kind regards, Hans www. silicos-it.com