# Re: [R] missing value where TRUE/FALSE needed

From: Peter Lauren <peterdlauren_at_yahoo.com>
Date: Thu 15 Jun 2006 - 00:53:27 EST

Hi Petr,

You are correct. There was an NA in BinMatrix. I made the mistake of only looking at the earlier entries. My problem was in this loop

for (i in 2:BinCnt)
{

BinMatrix[i,1]=BinMatrix[i-1,2]
BinMatrix[i,2]=BinMatrix[i,2]+Increment }

It should have been
for (i in 2:BinCnt)
{

BinMatrix[i,1]=BinMatrix[i-1,2]
BinMatrix[i,2]=BinMatrix[i,1]+Increment }

Thanks very much,
Peter.

• Petr Pikal <petr.pikal@precheza.cz> wrote:

> Hi
>
> as nobody has any of your variables and can not
> reproduce your code
> you has to track your problems yourself. R is kindly
> provided you
> with hint for it.
>
> a<-1
> b<-2
> value<-2
> if(value>=a&&value<=b) print("right") else
> print("wrong")
> [1] "right"
> b<-NA
> if(value>=a&&value<=b) print("right") else
> print("wrong")
> Error in if (value >= a && value <= b)
> print("right") else
> print("wrong") :
> missing value where TRUE/FALSE needed
>
> So one of your variables is NA when evaluating if
> statement and
> logical statement evaluates to NA but if expects
> true/false value.
>
> Besides I wonder if you cannor get rid of for cycle.
>
>
> >
>
> On 13 Jun 2006 at 12:19, Peter Lauren wrote:
>
> Date sent: Tue, 13 Jun 2006 12:19:42 -0700
> (PDT)
> From: Peter Lauren
> <peterdlauren@yahoo.com>
> To: r-help@stat.math.ethz.ch
> Subject: [R] missing value where TRUE/FALSE
> needed
>
> > I am using R 2.3.0 and trying to run the following
> > code.
> >
> > BinCnt=round(ShorterVectorLength/10)
> > BinMatrix=matrix(nrow=BinCnt, ncol=2)
> > Increment=(VectorRange[2]-VectorRange[1])/BinCnt
> > BinMatrix[1,1]=VectorRange[1]
> > BinMatrix[1,2]=VectorRange[1]+Increment
> > for (i in 2:BinCnt)
> > {
> > BinMatrix[i,1]=BinMatrix[i-1,2]
> > BinMatrix[i,2]=BinMatrix[i,2]+Increment
> > }
> >
> > # Count entries in each bin
> > Histogram=vector(length=BinCnt, mode="numeric")
> > for (i in 1:BinCnt) Histogram[i]=0
> > VectorLength=length(FormerVector)
> > for (i in 1:VectorLength)
> > {
> > Value=FormerVector[i]
> > for (j in 1:BinCnt) if (Value>=BinMatrix[j,1] &&
> > Value<=BinMatrix[j,2])
> > {
> > Histogram[j]=Histogram[j]+1
> > break;
> > }
> > }
> >
> > Unfotunately, at
> > if (Value>=BinMatrix[j,1] &&
> Value<=BinMatrix[j,2])
> > I get the following error message
> > Error in if (Value >= BinMatrix[j, 1] && Value <=
> > BinMatrix[j, 2]) { :
> > missing value where TRUE/FALSE needed
> > I inserted browser() just before the call and
> > (Value>=BinMatrix[j,1] && Value<=BinMatrix[j,2])
> > returned FALSE.
> >
> > Is there a bug in my code or a bug in my version
> of R?
>
> Neither. The code does not suit your data.
>
> HTH
> Petr
>
>
> >
> > Many thanks in advance,
> > Peter.
> >
> > ______________________________________________
> > R-help@stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide!
> > http://www.R-project.org/posting-guide.html
>
> Petr Pikal
> petr.pikal@precheza.cz
>
>

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jun 15 01:04:35 2006

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