R help - Jan 2008 - plot labeling and expressions

Hi all,

I'm trying to use an iteration that appends something to vector
'peaklabels'
like so:
peaklabelNames <- append(
        peaklabelNames,
        substitute(i^{z+phantom()}*"
("*a*"AMU)",list(i="y2",z=2,a=0))
)
The vector is supposed to be used with 'text' to put labels on signals
in an
impulse plot.

While not vectorized
        substitute(i^{z+phantom()}*"
("*a*"AMU)",list(i="y2",z=2,a=0))
works for me, the vectorized form doesn't. The labels are represented as 
        "y2"^2 (AMU)
(note the '"' in the printed string). Can anyone please give me a
hint on
how to resolve this?

Thanks, Joh

Johannes Graumann wrote:
> Hi all,
> 
> I'm trying to use an iteration that appends something to vector
'peaklabels'
> like so:
> peaklabelNames <- append(
>         peaklabelNames,
>         substitute(i^{z+phantom()}*"
("*a*"AMU)",list(i="y2",z=2,a=0))
> )
> The vector is supposed to be used with 'text' to put labels on
signals in an
> impulse plot.
> 
> While not vectorized
>         substitute(i^{z+phantom()}*"
("*a*"AMU)",list(i="y2",z=2,a=0))
> works for me, the vectorized form doesn't. The labels are represented
as
>         "y2"^2 (AMU)
> (note the '"' in the printed string). Can anyone please give
me a hint on
> how to resolve this?

I do not know what you mean by vectorized form. Can you give an example 
what you want to achieve and what you tried to do so?

Uwe Ligges

> Thanks, Joh
> 
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