R help - Nov 2003 - x[x > y] and more conditions

...and  i'm getting all cases which
are true for above condition and get the information
how many cases match, too. The vector's are in a attached data.frame.

FAKTOR30[FAKTOR30 > 0.234]
...................
[102193] 0.352 0.352 0.288 0.354 0.352 0.358 0.352 0.352 0.311 0.370 0.352
0.336
[102205] 0.352 0.274 0.352 0.405 0.354 0.352 0.352 0.352 0.352 0.352 0.352
0.340
[102217] 0.352 0.352


But if i use more than one "index" term
UMSATZ30[UMSATZ30 > 10] && FAKTOR30[FAKTOR30 = 0.234]

[1] NA

I get  true, false  or NA  and the latter i think this mean there isn't any
case with this condition!?
But, how can i check cases with more than one condition like the single
example, i trial some but getting no success?

Many thanks for help,
christian

On Tue, 18 Nov 2003, Christian Schulz wrote:
> ...and  i'm getting all cases which
> are true for above condition and get the information
> how many cases match, too. The vector's are in a attached data.frame.
> 
> FAKTOR30[FAKTOR30 > 0.234]
> ...................
> [102193] 0.352 0.352 0.288 0.354 0.352 0.358 0.352 0.352 0.311 0.370 0.352
> 0.336
> [102205] 0.352 0.274 0.352 0.405 0.354 0.352 0.352 0.352 0.352 0.352 0.352
> 0.340
> [102217] 0.352 0.352
> 
> 
> But if i use more than one "index" term
> UMSATZ30[UMSATZ30 > 10] && FAKTOR30[FAKTOR30 = 0.234]
> 
> [1] NA
See ?"&&" which tells you to use "&" instead os
"&&" for vectorized
logical operations like this one.

Using "&&" only evaluates the first elements of those logical
vectors, so
there seems to be an NA in UMSATZ30[1] or FAKTOR30[1]....

Uwe Ligges

 
> I get  true, false  or NA  and the latter i think this mean there isn't
any
> case with this condition!?
> But, how can i check cases with more than one condition like the single
> example, i trial some but getting no success?
> 
> Many thanks for help,
> christian
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>

Did you mean == not = ?

On Tue, 18 Nov 2003, Christian Schulz wrote:
> ...and  i'm getting all cases which
> are true for above condition and get the information
> how many cases match, too. The vector's are in a attached data.frame.
> 
> FAKTOR30[FAKTOR30 > 0.234]
> ...................
> [102193] 0.352 0.352 0.288 0.354 0.352 0.358 0.352 0.352 0.311 0.370 0.352
> 0.336
> [102205] 0.352 0.274 0.352 0.405 0.354 0.352 0.352 0.352 0.352 0.352 0.352
> 0.340
> [102217] 0.352 0.352
> 
> 
> But if i use more than one "index" term
> UMSATZ30[UMSATZ30 > 10] && FAKTOR30[FAKTOR30 = 0.234]
> 
> [1] NA
> 
> I get  true, false  or NA  and the latter i think this mean there isn't
any
> case with this condition!?
> But, how can i check cases with more than one condition like the single
> example, i trial some but getting no success?
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595