R help - Aug 2010 - TRUE/FALSE

Here is my code

		# determine the DDOA measurements 
		for(e in 1:numSensors)
		{
			for(f in 1:numSensors)
			{
				if((combos[e,f]==1)
				{
    			# true distance between each sensor and the target
    			truedistance[e]<-sqrt((targetX-sensorX[e])^2+(targetY-sensorY[e])^2)
    
    			# add an error that has a N(0, sigma^2) distribution 
    			truedistance[e]<-(truedistance[e]+rnorm(1, 0, sigma))
				}
		#truedistance[1] <- (truedistance[1]+50)

			#determine DDOA measurements (reference sensor is sensor #1 here)
		index<-1
		for(e in 1:numSensors)
		{
			if(e!=r)
			{
    					measurement[index]<-(truedistance[f]-truedistance[e]) 
						index <- (index+1)
			}
		}			

			}
				if(combos[e,f]!=1)
				{
				}
		}

combos is just a matrix containing 1's and 0's

This error keeps appearing

Error in if (combos[e, f] == 1) { : missing value where TRUE/FALSE needed


Any ideas?


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I can't understand why you doubled "("

"if((combos[e,f]==1) "

-----
A R learner.
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most likely 'combos[e,f]' is NA; take a look at your data.  Also put

options(error=utils::recover)

in your program so that when the error occurs you can learn to use the
debugging mode to trace down the problem.

On Mon, Aug 9, 2010 at 11:38 AM, Turn & Fall <turnandfall at
live.co.uk> wrote:
>
> Here is my code
>
> ? ? ? ? ? ? ? ?# determine the DDOA measurements
> ? ? ? ? ? ? ? ?for(e in 1:numSensors)
> ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ?for(f in 1:numSensors)
> ? ? ? ? ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?if((combos[e,f]==1)
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ?# true distance between each sensor and the target
> ? ? ? ? ? ? ? ? ? ? ?
?truedistance[e]<-sqrt((targetX-sensorX[e])^2+(targetY-sensorY[e])^2)
>
> ? ? ? ? ? ? ? ? ? ? ? ?# add an error that has a N(0, sigma^2) distribution
> ? ? ? ? ? ? ? ? ? ? ? ?truedistance[e]<-(truedistance[e]+rnorm(1, 0,
sigma))
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ? ? ?#truedistance[1] <- (truedistance[1]+50)
>
> ? ? ? ? ? ? ? ? ? ? ? ?#determine DDOA measurements (reference sensor is
sensor #1 here)
> ? ? ? ? ? ? ? ?index<-1
> ? ? ? ? ? ? ? ?for(e in 1:numSensors)
> ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ?if(e!=r)
> ? ? ? ? ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?measurement[index]<-(truedistance[f]-truedistance[e])
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?index <- (index+1)
> ? ? ? ? ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ? ? ?}
>
> ? ? ? ? ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?if(combos[e,f]!=1)
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?{
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ? ? ?}
>
> combos is just a matrix containing 1's and 0's
>
> This error keeps appearing
>
> Error in if (combos[e, f] == 1) { : missing value where TRUE/FALSE needed
>
>
> Any ideas?
>
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/TRUE-FALSE-tp2318668p2318668.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at 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.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?