[R] Cannot clean infinite values

[Ben Bolker]

Nigel Birney wrote:
> 
> Hello all,
> 
> I have to import numeric data from file but found it contains Infinite
> values which need to be eliminated. I tried to replace them in this way:
> 
> 	data[which(data=="-Inf")] <- -0.3
> 	data[which(data=="+Inf")] <-  0.3
> 
> But, somehow, the Infinite values stayed there. Any suggestions?
> 
> 

Inf is a special value -- it shouldn't be in quotation marks

> z <- c(1/0,0/0,-1/0)
> z
[1]  Inf  NaN -Inf
> z[z==Inf] <- 0.5
> z[z==-Inf] <- -0.5

or ...

> z <- c(1/0,0/0,-1/0)
> z[is.infinite(z)] <- 0.5*sign(z[is.infinite(z)])
> z
[1]  0.5  NaN -0.5

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