On Dec 1, 2009, at 10:59 AM, David Winsemius wrote:
On Dec 1, 2009, at 10:55 AM, David Winsemius wrote:
On Dec 1, 2009, at 10:38 AM, Santosh wrote:
Dear R gurus..
I had tried out some suggestions sent to me privately..and
unfortunately,
they did not work..
To use a condiition in a subset, the associated dataframe needs to
be
attached and detached, which I found cumbersome to use if using
more than 1
dataframe (with different dimensions) with same condition. I would
highly
appreciate your suggestions to overcome this problem.. Please see
my example
of usage I am trying to implement. Please note that the "cond'
takes in the
character instead of logical values...
cond1 <- 'group==1&sales>200'
cond2 <- 'group==2&sales>200'
cond3 <- 'group==3&sales>200'
I do not see that you have _ever_ offered a sample dataset in this
thread, so this suggestion remains untested. Please report what
happens when you try:
d1 <- subset(dat,subset=eval(parse(text=cond1)))
plot(y~x,data=dat,subset=eval(parse(text=cond1)),type='b')
lines(y~x,data=dat,subset=eval(parse(text=cond2)))
points
(y
~
x
,data
=dat,subset=eval(parse(text=paste(cond1,cond2)),sep='&'),col='blue')
Probably needs to be tested with this modification:
points(y~x, data=dat, subset=eval(parse(text=paste(cond1,cond2,
sep='&'))), col='blue')
And I am further guessing that the set will be empty since it seems
likely that:
(group==1 & group==2) == TRUE, so perhaps you should reconsider your
logic.
points(y~x,data=d1,subset=eval(parse(text=cond3)),col='red')
If I try the above, I get the following error message:
*Error in subset.data.frame(dat, cond) : 'subset' must evaluate to
logical*
If you could also suggest references implementing similar code, I
would
highly appreciate it.
?parse
Thanks so much,
Santosh
On Mon, Nov 23, 2009 at 6:38 PM, Santosh <santosh2...@gmail.com>
wrote:
Thanks... I would try it out..
-santosh
On Sat, Nov 21, 2009 at 12:04 AM, Bernardo Rangel Tura <
t...@centroin.com.br> wrote:
On Fri, 2009-11-20 at 17:40 -0800, Santosh wrote:
Dear Rxperts!
I was wondering if it is possible to write a function which can
take in
argument of a subset or condition.. Of course, I am aware of the
alternate
methods like coplot, par.plot, xyplot etc... I am specifically
interested in
using conditions/subsets with "plot"..
A simple fragmented example is shown here..
pltit <- function(y,x,dat,dat1,dat2,sbst) {
plot(y~x, data=dat, subset=sbst)
lines(y~x,data=dat1, subset=subst)
points(y~x,data=dat2,subset=subst)
}
pltit(profit,weeks,dat=zone1, sbst='group==1&sales>200')
Could you also suggest pointers/references/examples on
efficient ways to
plot simulated data overlaid with observed data?
Have a good weekend!
--
.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
