search for: spectroscopy

Hi all. I'd like know what is the format file saved by Leica Microsystems TCS SP2-AOBS equipped with a SP2-FCS2 Leica Microsystems workstation its datas. Cause it save in *.fcs extention file but ins't flow cytometry standart format file... Tahnks Horacio.

...n imported the data as an indexed data frame, I can't use the columns as vectors. Is there a way around this, to convert the data frame as 3 separate vectors? I have been looking all over for a function, and my programming skills are not great. -- Sk Maidul Haque Scientific Officer-C Applied Spectroscopy Division Bhabha Atomic Research Centre, Vizag Mo: 09666429050/09093458503 [[alternative HTML version deleted]]

Dear collegues, I´ ve worked with near infrared (NIR) spectroscopy to assess chemical, physical, mechanical and anatomical properties of wood. I use "The Unscrambler" software to correlate the matrix of dependent variables (Y) with the matrix of spectral data (X) and I would like to migrate to R. The matrix of spectral variables is very large (2345 colu...

Hi, I am currently analysis Raman spectroscopic data with the hyperSpec package. I consulted the documentation on this package and I found an example work-flow dedicated to Raman spectroscopy (see the address : http://hyperspec.r-forge.r-project.org/chondro.pdf) I am currently trying to remove outliers thanks to PCA just as they did in the documentation, but I get a message error I can't explain. Here is my code : "#import the data : T=read.table('bladder bis concatenatio...

...sh a series of special volumes. They will be guest edited (I have guest editors already, although somewhat tentative in some cases). Each volume will have 5-10 issues (articles) of the usual JSS format. Psychometrics in R Political Methodology in R Econometrics in R Social Science Methodology in R Spectroscopy/Chemometrics in R Ecology in R If you have suggestions, comments, possible contributions, ideas for additional volumes and so on, send them to me and I'll forward them to the appropriate authorities. -- Jan de Leeuw; Distinguished Professor and Chair, UCLA Department of Statistics; Editor: J...

Hi all, excuse me by this elementary question. I wish to know if a package in language R exists to analyze FCS (Fluorescence Correlation Spectroscopy) datas. And, if it possible, in addition can read the archives in raw format generated by the ConfoCor2 program. Thanks Horacio. **************************************************************************** Dr. Horacio Castellini http://ar.geocities.com/horacio9573 Proyecto Din?mica d...

Special Volume on Spectroscopy and Chemometrics in R Guest Edited by Katharine M. Mullen and Ivo H.M. van Stokkum 11 contributions, with software packages and examples Similar volumes on R in Psychometrics (guest edited by Jan de Leeuw) and R in Political Methodology (guest edited by Micah Altman and Simon Jackman) are close to...

...ave to convince people (adminstration of the institute) that hyperSpec now has a considerable user base. Obviously, this is important for getting funding to go on with the development. It would be extremely helpful if the hyperSpec users among you could drop me a short email saying - what kind of spectroscopy you use hyperSpec for - where you are (country, if possible city and institution/company) Of course, I'll treat the answers confidentially and I won't use names etc. and I won't sell any information. The goal is to have a few slides (geographical distribution of users - always a nice a...

...<-rownames(start.b)[which(sum.dist==max(sum.dist))] val<-c(val,bla[1]); start.b<-start.b[-(which(match(rownames(start.b),val[length(val)])! ="NA")),]; if(length(val)>=val.n)break; } return(val); } Regards, Thomas Dr. Thomas Terhoeven-Urselmans Post-Doc Fellow Soil infrared spectroscopy World Agroforestry Center (ICRAF) [[alternative HTML version deleted]]

...is one of the packages in which it arises. princomp is a nice function which creates an object for which inspection methods have been written. Unfortunately, princomp does not admit cases in which the x matrix is wider than high (i. e. more variables than observations). Such cases are typical in spectroscopy and related disciplines. It would be nice if the following two features were added to princomp: 1. as a default behavior, princomp should digest wider than high matrices (it should just compute the nontrivial principal compontents). 2. as an optional behavior, princomp should only calculate (and...

...ARY=de_DE.UTF-8 LC_MESSAGES=de_DE.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=de_DE.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base -- Claudia Beleites Spectroscopy/Imaging Institute of Photonic Technology Albert-Einstein-Str. 9 07745 Jena Germany email: claudia.beleites at ipht-jena.de phone: +49 3641 206-133 fax: +49 2641 206-399 -------------- next part -------------- A non-text attachment was scrubbed... Name: bash_completion.diff Type: text/x-patch...

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...relatively slow compilation of latex makes it quite impractical for quick studies ( I once spent 20 minutes trying to get the graph to be at a sensible scale on the page). As an alternative, I'm resorting to having a folder per study (I'm physicist, doing data analysis for optical spectroscopy), with one R file per analysis and a text file to keep track of the experimental conditions. When the data is really important / interesting, I've also tried to write a package: great for storing the data, functions and commands in a consistent manner (this works fine, but it cannot b...

Hi Folks... No code to troubleshoot here. I need some suggestions about the right terminology to use in further searching, and any suggestions about R pkgs that might be appropriate. I am in the planning stages of a project in which IR, NMR and other spectra (I'm a chemist) would be collected on various samples, and individual samples would be followed over time. The spectra will be feature

Greetings. I'm teaching linear regression this semester and that means I write more functions for my regression support package "rockchalk". I'm at a point now were some fresh eyes would help, so if you are a student in a course on regression, please consider looking over my package overview document here: http://pj.freefaculty.org/R/rockchalk.pdf That tells how you can grab

...thus 3.0.3). On the other hand if I inquiry xm directly with "xm info" I get: xen_major : 3 xen_minor : 1 xen_extra : .2-92.1.18.el5 Cheers, N. -- ============================================== Nuno Ricardo Santos Loureiro da Silva Ferreira NMR Spectroscopy Research Group Bijvoet Center for Biomolecular Research Utrecht University Bloembergen gebouw Padualaan 8, 3584 CH Utrecht The Netherlands P: +31.(0)30.253 9932 F: +31.(0)30.253 2652 E: n.l.ferreira@uu.nl W: http://nmr.chem.uu.nl ============================================== ___________________...

...hods based on cross validation. The most important changes since 1.01 are (1) a more efficient implementation of the penalized PLS algorithm that decreases the run-time substantially, (2) the inclusion of the data set "cookie" that contains measurements from quantitative near-infrared spectroscopy. Best regards, Nicole & Anne-Laure -- Dr. Nicole Kr?mer TU Berlin Machine Learning/Intelligent Data Analysis fon: (+49) 30 314 78627 Franklinstr. 28/29, 10587 Berlin, Germany fax: (+49) 30 314 78622 web: http://ml.cs.tu-berlin.de/~nkraemer _______________________________________________...

At www.jstatsoft.org we now have three special volumes Volume 22, Ecology and Ecological Modelling in R (Thomas Kneib and Thomas Petzoldt, eds.) Volume 20, Psychometrics in R (Jan de Leeuw and Patrick Mair, eds.) Volume 18, Spectroscopy and Chemometrics in R (Kate Mullen and Ivo van Stokkum, eds.) Coming soon -- Econometrics in R -- Political Methodology in R Gleam in my eye -- Geosciences / Geostatistics in R Additional suggestions/proposals always welcome. === Jan de Leeuw; Distinguished Professor and Chair, UCLA Depart...

in 2007 we will publish seven volumes of JSS (four of them special volumes). Volume 18 Spectroscopy and Chemometrics in R Volume 19 regular Volume 20 Psychometrics in R Volume 21 regular Volume 22 Ecology and Ecological Modeling in R Volume 23 is being started, it is a regular volume, and may not fill up completely. Volume 24 is 'Statistical Modeling of Social Networks with "statnet&quo...

...hods based on cross validation. The most important changes since 1.01 are (1) a more efficient implementation of the penalized PLS algorithm that decreases the run-time substantially, (2) the inclusion of the data set "cookie" that contains measurements from quantitative near-infrared spectroscopy. Best regards, Nicole & Anne-Laure -- Dr. Nicole Kr?mer TU Berlin Machine Learning/Intelligent Data Analysis fon: (+49) 30 314 78627 Franklinstr. 28/29, 10587 Berlin, Germany fax: (+49) 30 314 78622 web: http://ml.cs.tu-berlin.de/~nkraemer _______________________________________________...