[R] Literature analysis

[Schwan]

OK this does work:

I can subtract eg the titles. But how can I say R that it should make a
link between title, keyword and frequency of the keywords in order to
have a 3 d plot?

Thanks a lot for helping me until here anyway!

Cheers 



On Mon, 2009-12-14 at 16:15 +0100, Romain Francois wrote:
> Hello,
> 
> Sorry to arrive late on this. Did you try the recently uploaded "bibtex" 
> package. It reads a bibtex file into an R list (of class citationList).
> 
> So for example : if your posted example lives in biblio.bib for example, 
> you can read it like this :
> 
>  > bib <- read.bib( "biblio.bib" )
>  > sapply( bib[[1]], function(item) item$title )
> [1] "Adsorption and Diffusion of VO<sup>2+</sup>  and\nVO<sub>2</sub> 
> <sup>+</sup>\n\tacross Cation Membrane for All-Vanadium Redox Flow Battery"
> [2] "Modification of Daramic, microporous separator, for redox\nflow 
> battery\n\tapplications"
> 
> Romain
> 
> On 12/11/2009 03:41 PM, Schwan wrote:
> >
> > They are in Bibtex
> >
> > For example:
> >
> > "@ARTICLE{adsdifvanadiumcationexchange,
> >    author = {Jin-qing Chen and Bao-guo Wang and Ji-chu Yang},
> >    title = {Adsorption and Diffusion of VO<sup>2+</sup>  and
> > VO<sub>2</sub>  <sup>+</sup>
> > 	across Cation Membrane for All-Vanadium Redox Flow Battery},
> >    journal = {Solvent Extraction and Ion Exchange},
> >    year = {2009},
> >    volume = {27},
> >    pages = {312--327},
> >    number = {2},
> >    abstract = {A method based on a selectivity coefficient and the
> > Nernst-Planck
> > 	equation is proposed to determine diffusion coefficients of vanadium
> > 	ions across a cation exchange membrane in VO<sup>2+</sup>/H<sup>+</sup>
> > 	and VO<sub>2</sub>  <sup>+</sup>/H<sup>+</sup>  systems. This simplified
> > 	method can be applied to high concentrations of vanadium ions. Three
> > 	cation exchange membranes were studied. The logarithmic value of
> > 	the selectivity coefficient was linearly dependent on the molar
> > fraction
> > 	of vanadium ions in solution. The diffusion coefficient of vanadium
> > 	ions decreased with decreasing water content. The membrane with the
> > 	lowest diffusion coefficient was selected as a battery separator
> > 	and showed the lowest capacity loss of the studied membranes.},
> >    issn = {0736-6299},
> >    publisher = {Taylor \&  Francis},
> >    url = {http://www.informaworld.com/10.1080/07366290802674614}
> > }
> >
> > @ARTICLE{Chieng1992,
> >    author = {Chieng, S.C. and Kazacos, M. and Skyllas-Kazacos, M.},
> >    title = {Modification of Daramic, microporous separator, for redox
> > flow battery
> > 	applications},
> >    journal = {Journal of Membrane Science},
> >    year = {1992},
> >    volume = {75},
> >    pages = {81--91},
> >    number = {1-2},
> >    month = dec,
> >    issn = {0376-7388},
> >    keywords = {Daramic, microporous separator, redox flow cell and
> > battery},
> >    owner = {schwan},
> >    timestamp = {2009.11.30},
> >    url =
> > {http://www.sciencedirect.com/science/article/B6TGK-43S71CR-7K/2/06f90d391c0eff0ff5df3f282ad5fe28}
> > }"
> >
> >
> >
> > On Fri, 2009-12-11 at 15:37 +0100, Gustaf Rydevik wrote:
> >>
> >>
> >> On Fri, Dec 11, 2009 at 3:04 PM, Schwan<s.s.hosseiny at utwente.nl>
> >> wrote:
> >>          Thanks, but how should I put the citation inside a data frame?
> >>
> >>          data.frame(first txt file, second txt file...)
> >>          plot (what should I insert here????) type="p"
> >>
> >>          And how should I load the txt files anyway inside the frame?
> >>
> >>
> >>
> >>
> >> Can you give an example of a couple of text files? Are they in a
> >> standardised format (i.e. bibTEX or similar)?
> >>
> >>
> >> /Gustaf
> >>
> >> --
> >> Gustaf Rydevik, M.Sci.
> >> tel: +46(0)703 051 451
> >> address:Essingetorget 40,112 66 Stockholm, SE
> >> skype:gustaf_rydevik
> >
> >
> 
> 


-- 
-------------------------------------------
Hosseiny, MSc. S.S. (Seyed Schwan)
University of Twente Science and Technology
Meander, ME 322
P.O. Box 217 7500 AE Enschede
The Netherlands
Phone +31 534892869
Email:  S.S.Hosseiny at utwente.n