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Peter Lauren

2006-Jun-13 19:19 UTC

[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?

Many thanks in advance,
Peter.

Petr Pikal

2006-Jun-14 06:56 UTC

head link

[R] missing value where TRUE/FALSE needed

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 at yahoo.com>
To:             	r-help at 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 at 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 at precheza.cz

Peter Lauren

2006-Jun-14 14:53 UTC

head link

[R] missing value where TRUE/FALSE needed

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 at 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 at yahoo.com>
> To:             	r-help at 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 at 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 at precheza.cz
> 
>

R help - Jun 2006 - missing value where TRUE/FALSE needed

[R] missing value where TRUE/FALSE needed

[R] missing value where TRUE/FALSE needed

[R] missing value where TRUE/FALSE needed