
Thanks for the help, I really appreciate it.

However, I have one more small issue and I don't really want to post a second message in such a short space of time, so I will put it up here if someone is willing to help.

Basically I need to transfer two vectors into a data.frame/matrix (with a unique name, as already discussed above). However, the numbers that enter into the data.frame do not match the numbers that I supposedly entered from the vector. Example.

> instrument.input[3,6]
[1] 769873.58
43 Levels: 10840277.06 109014288.37 11055630.67 11456522.47 ... CPS
> data <- instrument.input[3,6]
> data
[1] 769873.58
43 Levels: 10840277.06 109014288.37 11055630.67 11456522.47 ... CPS

Works fine if I put it as a sole varible.. however if I try adding it to a data.frame/matrix

> temp.data1[1,1] <- instrument.input[3,6]
> temp.data1[1,1]
CPS 
 31 

The incorrect number is given, if I've understood this properly I should be recalling 769873.

Any suggestions or thoughts?


Cheers 

Kurt 



> Date: Fri, 3 Jul 2009 14:22:00 +0200
> From: romain.francois@dbmail.com
> To: kurt.smith@hotmail.co.uk
> CC: R-help@r-project.org
> Subject: Re: [R] Remove all spaces from a string so it can be used by assign()
> 
> On 07/03/2009 02:13 PM, Kurt Smith wrote:
> > Are you sure it would work?
> >
> > It works when I physically enter "56 Fe [1]" but fails when I try to
> > enter that anything other then directly.
> >
> >>  instrument.input[1,6]
> > [1] 56  Fe  [ 1 ]
> > 43 Levels: 10840277.06 109014288.37 11055630.67 11456522.47 ... CPS
> >>  assign(instrument.input[1,6], temp.data)
> > Error in assign(instrument.input[1, 6], temp.data) :
> >    invalid first argument
> 
> that is because instrument.input[1,6] is a factor. You would need 
> something like this untested call :
> 
> R> assign( as.character( instrument.input[1,6] ), temp.data )
> 
> Whether all of this is a good idea is up to you
> 
> >>  temp.name<- instrument.input[1,6]
> >>  temp.name
> > [1] 56  Fe  [ 1 ]
> > 43 Levels: 10840277.06 109014288.37 11055630.67 11456522.47 ... CPS
> >>  assign(temp.name, temp.data)
> > Error in assign(temp.name, temp.data) : invalid first argument
> >
> > and it seems that it is because the varible begins with an integer R doesn't like it.
> > Would it be possible to use gsub to create Fe561?
> 
> sure.
> 
> R> gsub( "[^[:alnum:]]", "", gsub( "([[:digit:]]+)(.*)", "\\2\\1", "56 
> Fe [1]" ) )
> [1] "Fe156"
> 
> others probably have a one call solution
> 
> >>  R>  gsub( "[^[:alnum:]]", "", "56 Fe [1]" )
> >>  [1] "56Fe1"
> >
> >
> >
> >  > Date: Fri, 3 Jul 2009 13:09:20 +0200
> >  > From: romain.francois@dbmail.com
> >  > To: kurt.smith@hotmail.co.uk
> >  > CC: r-help@r-project.org
> >  > Subject: Re: [R] Remove all spaces from a string so it can be used by
> > assign()
> >  >
> >  > On 07/03/2009 12:56 PM, Kurt Smith wrote:
> >  > >
> >  > > Hi
> >  > >
> >  > > I have a string "56 Fe [1]" that I would like to use as a variable
> > name by using "assign" however I think the spaces and brackets might be
> > causing R some trouble.
> >  >
> >  > Not really;
> >  >
> >  > R> assign( "56 Fe [1]", 10 )
> >  > R> `56 Fe [1]`
> >  > [1] 10
> >  >
> >  > > How can I change the string so that it just becomes 56Fe1 and can
> > be used as a variable name.
> >  >
> >  > 56Fe1 is not good enough to be assigned without quotes
> >  >
> >  > R> 56Fe1 <- 10
> >  > Error: unexpected symbol in "56Fe1"
> >  >
> >  > You might be interested in make.names
> >  >
> >  > R> make.names( "56 Fe [1]" )
> >  > [1] "X56.Fe..1."
> >  >
> >  > Otherwise, to answer your question, you can :
> >  >
> >  > R> gsub( "[^[:alnum:]]", "", "56 Fe [1]" )
> >  > [1] "56Fe1"
> >  >
> >  >
> >  > > Thank You
> >  > >
> >  > > Kurt
> >  >
> >  >
> >  > --
> >  > Romain Francois
> >  > Independent R Consultant
> >  > +33(0) 6 28 91 30 30
> >  > http://romainfrancois.blog.free.fr
> >  > |- http://tr.im/qJ8V : RGG#153: stars network
> >  > |- http://tr.im/qzSl : using ImageJ from R: the RImageJ package
> >  > `- http://tr.im/qzSJ : with semantics for java objects in rJava
> >
> > ------------------------------------------------------------------------
> > View your Twitter and Flickr updates from one place - Learn more!
> > <http://clk.atdmt.com/UKM/go/137984870/direct/01/>
> 
> 
> -- 
> Romain Francois
> Independent R Consultant
> +33(0) 6 28 91 30 30
> http://romainfrancois.blog.free.fr
> |- http://tr.im/qJ8V : RGG#153: stars network
> |- http://tr.im/qzSl : using ImageJ from R: the RImageJ package
> `- http://tr.im/qzSJ : with semantics for java objects in rJava

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